Many services / applications now a day are ill equipped with handling a sudden rush of popularity, as is often the case on the internet now a days, to a point where the services either become unavailable or unbearably slow.
By taking a chapter from the ant colonies in the wild, where their strength lies in their numbers and the fact that everyone works together towards the same goal, we can apply the same principle to our service by using systems such as
- gearman
- memcache
- daemons
- message queues
- load balancers
and many more, you can achieve greater performance, more redundancy, higher availability and have the ability to scale your services up and down as required easily.
During this talk attendees will be lead through the world of distributed systems and scalability, and shown the how, where and what, of how to take the average application and splitting it into smaller more manageable pieces
The document discusses distributing workloads across multiple servers for efficiency, budget, and user perception reasons. It describes characteristics of distributed systems like decoupling, elasticity, high availability and concurrency. Specific techniques discussed include load balancing, monitoring, queue systems, avoiding local dependencies, and using tools like Gearman for asynchronous processing. The talk emphasizes architecting for distribution from the start through techniques like decoupling components, elastic scaling, and avoiding single points of failure.
Many services / applications now a day are ill equipped with handling a sudden rush of popularity, as is often the case on the internet now a days, to a point where the services either become unavailable or unbearably slow.
By taking a chapter from the ant colonies in the wild, where their strength lies in their numbers and the fact that everyone works together towards the same goal, we can apply the same principle to our
service by using systems such as:
- gearman
- memcache
- daemons
- message queues
- load balancers
and many more, you can achieve greater performance, more redundancy, higher availability and have the ability to scale your services up and down as required easily.
During this talk attendees will be lead through the world of distributed systems and scalability, and shown the how, where and what, of how to take the average application and splitting it into smaller more manageable pieces.
The document discusses features of the Ruby on Rails web framework. It covers the MVC architecture pattern used in Rails, the convention over configuration principle, and emphasis on the DRY (Don't Repeat Yourself) principle of software development. Examples of popular websites built with Rails are provided. The document also discusses Rails' use of dynamic programming languages, object-relational mapping, and support for automated testing.
This presentation describes how to use perl to run a sample data processing application using the MapReduce framework and gearmand servers.
The original demo code was hosted at the Ann Arbor Perl Mongers web site but moved to github:jpitts/gearman-mapreduce-demo.
Gearman is an open-source software that provides a job queue to distribute tasks among multiple machines. It uses a simple request-response protocol that allows workers to perform tasks like processing images, sending email, and log analysis. Originally created by Brad Fitzpatrick in 2005, Gearman is widely used by companies like LiveJournal, Digg and Yahoo to distribute workloads and build asynchronous workflows.
With Gearman, a client/server infrastructure for generic tasks, you can work on distributed servers easily, with little worry about the details.
No matter what language you speak, Gearman can meet your needs in C, PHP, Perl, Ruby, shell scripting, and several more.
The document discusses optimizing PHP code and applications for scalability. It identifies bad coding practices to avoid, such as not using opcode caching. It recommends using opcode caching like APC to pre-compile and cache code for faster execution. It also suggests ways to speed up databases, such as tuning, and describes building a scalable infrastructure using technologies like Gearman for distributed task processing and Aptana Cloud.
The document discusses distributing workloads across multiple servers for efficiency, budget, and user perception reasons. It describes characteristics of distributed systems like decoupling, elasticity, high availability and concurrency. Specific techniques discussed include load balancing, monitoring, queue systems, avoiding local dependencies, and using tools like Gearman for asynchronous processing. The talk emphasizes architecting for distribution from the start through techniques like decoupling components, elastic scaling, and avoiding single points of failure.
Many services / applications now a day are ill equipped with handling a sudden rush of popularity, as is often the case on the internet now a days, to a point where the services either become unavailable or unbearably slow.
By taking a chapter from the ant colonies in the wild, where their strength lies in their numbers and the fact that everyone works together towards the same goal, we can apply the same principle to our
service by using systems such as:
- gearman
- memcache
- daemons
- message queues
- load balancers
and many more, you can achieve greater performance, more redundancy, higher availability and have the ability to scale your services up and down as required easily.
During this talk attendees will be lead through the world of distributed systems and scalability, and shown the how, where and what, of how to take the average application and splitting it into smaller more manageable pieces.
The document discusses features of the Ruby on Rails web framework. It covers the MVC architecture pattern used in Rails, the convention over configuration principle, and emphasis on the DRY (Don't Repeat Yourself) principle of software development. Examples of popular websites built with Rails are provided. The document also discusses Rails' use of dynamic programming languages, object-relational mapping, and support for automated testing.
This presentation describes how to use perl to run a sample data processing application using the MapReduce framework and gearmand servers.
The original demo code was hosted at the Ann Arbor Perl Mongers web site but moved to github:jpitts/gearman-mapreduce-demo.
Gearman is an open-source software that provides a job queue to distribute tasks among multiple machines. It uses a simple request-response protocol that allows workers to perform tasks like processing images, sending email, and log analysis. Originally created by Brad Fitzpatrick in 2005, Gearman is widely used by companies like LiveJournal, Digg and Yahoo to distribute workloads and build asynchronous workflows.
With Gearman, a client/server infrastructure for generic tasks, you can work on distributed servers easily, with little worry about the details.
No matter what language you speak, Gearman can meet your needs in C, PHP, Perl, Ruby, shell scripting, and several more.
The document discusses optimizing PHP code and applications for scalability. It identifies bad coding practices to avoid, such as not using opcode caching. It recommends using opcode caching like APC to pre-compile and cache code for faster execution. It also suggests ways to speed up databases, such as tuning, and describes building a scalable infrastructure using technologies like Gearman for distributed task processing and Aptana Cloud.
1. Events and threading are both approaches to handling concurrency but have key differences in how they manage parallel processing and synchronization.
2. With events, each event is handled independently without preemption or explicit synchronization, whereas threads require managing shared states and locks which can cause issues like deadlocks.
3. The document recommends using an event-based approach for cases where fast iteration, easy testing, and avoiding thread-safety issues are priorities, and using threads only where explicit concurrency is needed and there is a performance benefit. It introduces Gearman as an events-based job queue system.
Gearman is a distributed job queue system. It allows for jobs to be farmed out to multiple machines and workers. The document discusses installing Gearman on Debian and CentOS systems using apt-get and yum. It then provides examples of using the Gearman Perl client and worker modules to distribute and process tasks. A client submits 10 jobs which are processed by a worker and the results returned.
Gearman is a framework for writing distributed applications across many nodes. It allows you to do work in parallel, load balance processes and write applications across several programming languages. In this presentation we'll learn how to get started writing Gearman-powered applications in Perl.
Gearman is an open-source application framework that allows for the distribution of work across multiple machines. It uses a queueing system to dispatch jobs to workers to be processed asynchronously. Clients submit jobs to the Gearman server which handles distributing jobs to available worker processes to execute the requested tasks. This allows for scalable and fault-tolerant processing of jobs in parallel across a pool of machines.
Gearman is a job server that allows clients to distribute jobs to workers. It manages communication between clients and workers, which can be written in different programming languages. Clients submit jobs to Gearman that workers then process asynchronously. Gearman provides features like parallel processing, callbacks, prioritization, and monitoring of job status. It allows scaling applications by distributing work across multiple workers.
WebCamp: Developer Day: N2O: The Most Powerful Erlang Web Framework - Максим ...GeeksLab Odessa
N2O: The Most Powerful Erlang Web Framework
Максим Сохацкий
N2O разрабатывался как многофункциональный WebSocket аппликейшин сервер широкого назначения. Будучи ответвлен изначально от классического сервер-рендер фреймворка Nitrogen, он развился в мощное средство (включающее в том числе и поддержку SPA приложений) обеспечения пула долгоживущих TCP соеднений и доставки кода/даных выступая в качестве высокоемкностного релея, благодаря надежной и высокоустойчивой платформе Erlang/OTP. Соединяя в себе все черты Full-Stack веб фреймворков: Роутинг, Темплейтинг, Pub/Sub, Сессии, Хранилище, REST и поддержка кастомных протоколов; N2O добавляет совершенно уникальные возможности для создания различных DSL: вы можете транслировать бизнес логику, написанную на Erlang языках (Elixir, Erlang, Joxa) в JavaScript, генерировать трансформаций Erlang рекордов в JSON структуры и много другое, специфицировать JavaScript протоколы на языке Erlang. Сейчас N2O развивается в сторону поддержки SVG клиентов и бинарных протоколов.
This document discusses how Vim can improve productivity for Perl coding. It provides examples of using Vim motions and modes like Normal mode, Insert mode, and Visual mode to efficiently edit code. It also covers Vim features like syntax highlighting, custom syntax files, key mappings, and text objects that are useful for Perl. The document advocates that Vim is a powerful editor rather than an IDE and highlights how it can save significant time compared to less efficient editing methods.
Gearman is a client/server infrastructure for generic tasks, usable on distributed servers, with little worry about the details. No matter what language you speak, Gearman can meet your needs in C, PHP, Perl, Ruby, shell scripting, and several more. Gearman can also work in conjunction with MySQL, either using UDFs, or simply through its basic architecture.
This talk will show examples of how to use Gearman for remote installation and how to call functions written in Perl from any other language or from inside MySQL server, with no knowledge of Perl at all.
CandraLab GIS v1.0 is a PHP-based geographic information system that uses Google Maps, jQuery, Bootstrap and a MySQL database. It allows users to view, add and modify province and regency data as well as gas station, police station and hospital locations in Indonesia through an admin page. The open source software is released under an Apache 2.0 license and its code can be downloaded from the developer's website.
This document discusses using Gearman for work queue processing in PHP. It begins with an introduction to Gearman and how it allows work to be distributed across languages and machines. Several examples are provided of using Gearman in PHP for both client and worker applications. CodeIgniter integration is also demonstrated. Overall the document provides an overview of Gearman and examples of implementing work queues in PHP using this system.
We use Gearman for managing queue system. This covers why we should use a queue in many situations on web-based interface as well as server-side application.
Home automation with Perl (FHEM).
I've used a Raspberry Pi with 868MHz technology to gather data about my home, and view/analyse this with Logstash, Elasticsearch and Kibana.
Gearman is a software framework that allows distributing work across multiple machines. It consists of a daemon, clients, and workers. The daemon handles communication between clients and workers. Clients submit work to the daemon, which passes it to workers to complete. Workers register functions they can perform and handle tasks asynchronously. Gearman provides load balancing and allows processing work in parallel across languages. It can improve performance for tasks like image processing, email sending, and log analysis.
- The document discusses various aspects of Unix programming using Perl, including handling errors, filehandles after forking processes, and signals.
- It provides examples of how to properly check for errors, avoid resource collisions after forking, and make code cancellable using signals.
- Key topics covered include using the Errno module to check for errors, closing filehandles after forks to prevent sharing issues, and trapping signals like SIGPIPE and SIGTERM.
This document provides an overview of data structures and algorithms. It introduces common linear data structures like stacks, queues, and linked lists. It discusses the need for abstract data types and different data types. It also covers implementing stacks as a linked list and common stack operations. Key applications of stacks include function call stacks which use a LIFO structure to remember the order of function calls and returns.
Building a Scalable Web Crawler with Hadoop by Ahad Rana from CommonCrawl
Ahad Rana, engineer at CommonCrawl, will go over CommonCrawl’s extensive use of Hadoop to fulfill their mission of building an open, and accessible Web-Scale crawl. He will discuss their Hadoop data processing pipeline, including their PageRank implementation, describe techniques they use to optimize Hadoop, discuss the design of their URL Metadata service, and conclude with details on how you can leverage the crawl (using Hadoop) today.
May 25, 2011
In 2010 Panasonic made the decision to replace their legacy enterprise search tool and switched the search for all their European websites to a Apache Solr based solution.
Now their customers benefit from an incredibly fast and feature rich solution that is much more than just a search and has become a valuable sales-driving tool for Panasonic. Features like relevancy manipulation, autosuggest, contextual filtering for properties like color or product category were implemented under not the most ideal circumstances mainly that there was no access to structured data. The search was rolled out in close to 30 countries so far also putting Solr multi-lingual handling to a test.
5 Heresies for a Better World: some playful challenges to everyone's assumptions about building for the modern web.
(From some time back in 2008, so some of the references have been forgotten by now. The points about having to think, and not just following the crowd without thinking, and cats being evil and about to make us all obsolete slaves, are still pretty relevant thought.)
1. Events and threading are both approaches to handling concurrency but have key differences in how they manage parallel processing and synchronization.
2. With events, each event is handled independently without preemption or explicit synchronization, whereas threads require managing shared states and locks which can cause issues like deadlocks.
3. The document recommends using an event-based approach for cases where fast iteration, easy testing, and avoiding thread-safety issues are priorities, and using threads only where explicit concurrency is needed and there is a performance benefit. It introduces Gearman as an events-based job queue system.
Gearman is a distributed job queue system. It allows for jobs to be farmed out to multiple machines and workers. The document discusses installing Gearman on Debian and CentOS systems using apt-get and yum. It then provides examples of using the Gearman Perl client and worker modules to distribute and process tasks. A client submits 10 jobs which are processed by a worker and the results returned.
Gearman is a framework for writing distributed applications across many nodes. It allows you to do work in parallel, load balance processes and write applications across several programming languages. In this presentation we'll learn how to get started writing Gearman-powered applications in Perl.
Gearman is an open-source application framework that allows for the distribution of work across multiple machines. It uses a queueing system to dispatch jobs to workers to be processed asynchronously. Clients submit jobs to the Gearman server which handles distributing jobs to available worker processes to execute the requested tasks. This allows for scalable and fault-tolerant processing of jobs in parallel across a pool of machines.
Gearman is a job server that allows clients to distribute jobs to workers. It manages communication between clients and workers, which can be written in different programming languages. Clients submit jobs to Gearman that workers then process asynchronously. Gearman provides features like parallel processing, callbacks, prioritization, and monitoring of job status. It allows scaling applications by distributing work across multiple workers.
WebCamp: Developer Day: N2O: The Most Powerful Erlang Web Framework - Максим ...GeeksLab Odessa
N2O: The Most Powerful Erlang Web Framework
Максим Сохацкий
N2O разрабатывался как многофункциональный WebSocket аппликейшин сервер широкого назначения. Будучи ответвлен изначально от классического сервер-рендер фреймворка Nitrogen, он развился в мощное средство (включающее в том числе и поддержку SPA приложений) обеспечения пула долгоживущих TCP соеднений и доставки кода/даных выступая в качестве высокоемкностного релея, благодаря надежной и высокоустойчивой платформе Erlang/OTP. Соединяя в себе все черты Full-Stack веб фреймворков: Роутинг, Темплейтинг, Pub/Sub, Сессии, Хранилище, REST и поддержка кастомных протоколов; N2O добавляет совершенно уникальные возможности для создания различных DSL: вы можете транслировать бизнес логику, написанную на Erlang языках (Elixir, Erlang, Joxa) в JavaScript, генерировать трансформаций Erlang рекордов в JSON структуры и много другое, специфицировать JavaScript протоколы на языке Erlang. Сейчас N2O развивается в сторону поддержки SVG клиентов и бинарных протоколов.
This document discusses how Vim can improve productivity for Perl coding. It provides examples of using Vim motions and modes like Normal mode, Insert mode, and Visual mode to efficiently edit code. It also covers Vim features like syntax highlighting, custom syntax files, key mappings, and text objects that are useful for Perl. The document advocates that Vim is a powerful editor rather than an IDE and highlights how it can save significant time compared to less efficient editing methods.
Gearman is a client/server infrastructure for generic tasks, usable on distributed servers, with little worry about the details. No matter what language you speak, Gearman can meet your needs in C, PHP, Perl, Ruby, shell scripting, and several more. Gearman can also work in conjunction with MySQL, either using UDFs, or simply through its basic architecture.
This talk will show examples of how to use Gearman for remote installation and how to call functions written in Perl from any other language or from inside MySQL server, with no knowledge of Perl at all.
CandraLab GIS v1.0 is a PHP-based geographic information system that uses Google Maps, jQuery, Bootstrap and a MySQL database. It allows users to view, add and modify province and regency data as well as gas station, police station and hospital locations in Indonesia through an admin page. The open source software is released under an Apache 2.0 license and its code can be downloaded from the developer's website.
This document discusses using Gearman for work queue processing in PHP. It begins with an introduction to Gearman and how it allows work to be distributed across languages and machines. Several examples are provided of using Gearman in PHP for both client and worker applications. CodeIgniter integration is also demonstrated. Overall the document provides an overview of Gearman and examples of implementing work queues in PHP using this system.
We use Gearman for managing queue system. This covers why we should use a queue in many situations on web-based interface as well as server-side application.
Home automation with Perl (FHEM).
I've used a Raspberry Pi with 868MHz technology to gather data about my home, and view/analyse this with Logstash, Elasticsearch and Kibana.
Gearman is a software framework that allows distributing work across multiple machines. It consists of a daemon, clients, and workers. The daemon handles communication between clients and workers. Clients submit work to the daemon, which passes it to workers to complete. Workers register functions they can perform and handle tasks asynchronously. Gearman provides load balancing and allows processing work in parallel across languages. It can improve performance for tasks like image processing, email sending, and log analysis.
- The document discusses various aspects of Unix programming using Perl, including handling errors, filehandles after forking processes, and signals.
- It provides examples of how to properly check for errors, avoid resource collisions after forking, and make code cancellable using signals.
- Key topics covered include using the Errno module to check for errors, closing filehandles after forks to prevent sharing issues, and trapping signals like SIGPIPE and SIGTERM.
This document provides an overview of data structures and algorithms. It introduces common linear data structures like stacks, queues, and linked lists. It discusses the need for abstract data types and different data types. It also covers implementing stacks as a linked list and common stack operations. Key applications of stacks include function call stacks which use a LIFO structure to remember the order of function calls and returns.
Building a Scalable Web Crawler with Hadoop by Ahad Rana from CommonCrawl
Ahad Rana, engineer at CommonCrawl, will go over CommonCrawl’s extensive use of Hadoop to fulfill their mission of building an open, and accessible Web-Scale crawl. He will discuss their Hadoop data processing pipeline, including their PageRank implementation, describe techniques they use to optimize Hadoop, discuss the design of their URL Metadata service, and conclude with details on how you can leverage the crawl (using Hadoop) today.
May 25, 2011
In 2010 Panasonic made the decision to replace their legacy enterprise search tool and switched the search for all their European websites to a Apache Solr based solution.
Now their customers benefit from an incredibly fast and feature rich solution that is much more than just a search and has become a valuable sales-driving tool for Panasonic. Features like relevancy manipulation, autosuggest, contextual filtering for properties like color or product category were implemented under not the most ideal circumstances mainly that there was no access to structured data. The search was rolled out in close to 30 countries so far also putting Solr multi-lingual handling to a test.
5 Heresies for a Better World: some playful challenges to everyone's assumptions about building for the modern web.
(From some time back in 2008, so some of the references have been forgotten by now. The points about having to think, and not just following the crowd without thinking, and cats being evil and about to make us all obsolete slaves, are still pretty relevant thought.)
The document discusses Facebook's history and approach to innovation and scaling challenges. It outlines key milestones from 2004 to 2011 including launching new apps and features. It also discusses Facebook's approach to building its own servers and data centers using open standards to improve efficiency and allow other companies to benefit from their work. The focus is on leveraging openness to address scaling challenges over time.
Choosing the right Content Management SystemRachel Andrew
This document discusses key considerations for choosing the right content management system (CMS). It emphasizes that a one-size-fits-all approach does not work and that the CMS should support the needs of the project, including technical requirements, editor skills, and desired editing environment. The document also advocates for structured content and simple formatting over rich WYSIWYG editors to better support the content strategy.
The document discusses the benefits of using Contexts and Dependency Injection (CDI) and Seam 3 for web application development. It provides an introduction to CDI and Seam 3, discusses how they simplify design and development, and provides examples of how to structure applications using CDI patterns like CEC (CDI-EJB-CDI). The document advocates for letting CDI and structure determine application flow for improved simplicity, maintainability and productivity.
This document appears to be notes from a presentation on mobile and social media trends. It discusses the rise of platforms like YouTube and Tudou, the growth of online video views, and new opportunities for user-generated content and video blogging. It also covers mobile innovations from companies like Apple and Google, the increasing time users spend online versus watching TV, and how businesses can leverage new media.
The document introduces MobileNotifier, a jailbreak app for iOS that improves upon the native notification system. It provides customizable alerts and gives users access to alerts on the lockscreen. The app grew popular with over 160,000 downloads. The creator discusses ideas for future updates, like less obtrusive sounds, sending notifications to other Apple devices, and creating a widget platform for third-party apps to integrate customizable widgets into the iOS interface. He demos new features of MobileNotifier and widget concepts.
This document appears to be a presentation on mobile commerce trends from Ed Pimentel of AgileCO. It discusses the growth of the mobile market from 2.5M PCs in 2010 to 200M smartphones. Key topics covered include the shift to personal, social, real-time, always-on experiences on high-speed portable devices and the rise of mobile wallet payments using QR codes, NFC, and other technologies. The presentation also examines emerging areas like the Internet of Things, augmented reality, and mobile-enabled mass transit ticketing.
This document discusses Gaelyk, a Groovy toolkit for Google App Engine. Gaelyk allows developers to use Groovy scripts instead of Java servlets and templates instead of JSPs. It provides enhancements to the App Engine Java SDK to simplify development when using Groovy's dynamic features. The recently released Gaelyk 0.7 adds support for new App Engine services and upgrades dependencies. Groovy is advocated for because it is a dynamic JVM language with a Java-like syntax that simplifies development through powerful APIs.
Nigeria & Designing for the Mobile WebZi Bin Cheah
The document discusses three main approaches to mobile web design: 1) Doing nothing and keeping the desktop site as-is, 2) Creating a separate mobile site, and 3) Creating a single responsive site that adapts to different screen sizes using viewport settings and media queries. It also covers challenges in mobile development like different device capabilities and debugging tools. Mobile usage statistics for Nigeria show the popularity of sites like Facebook and that most users have older Nokia feature phones.
Co kodér očekává od programátora a co programátor od kodéra?Martin Michálek
This document discusses the relationship between a coder and a programmer. It notes that the programmer expects the coder to not get lost in technical details and to be a technology leader with a vision beyond the tools. The programmer expects the coder to exist, not be annoying, and provide assistance. Overall, good communication and empathy are important for the two roles, just as in a marriage.
Speed Dating: How Speeding up your Blog Improves your SEOVigLink
SEO is top of mind for every blog owner, but how can bloggers maximize their SEO? In this presentation, Michelle Zatlyn, co-founder of CloudFlare shares tips to speed up your blog and improve your SEO.
Spectrum of IT BPO Services in the PhilippinesExist
Jerry Rapes, CEO of Exist and member of the board of directors of PSIA, CEDF-IT, and DevCon, presents about the differentiators of the Philippines as outsourcing destination for IT and BPO.
In 2010 Panasonic made the decision to replace their legacy enterprise search tool and switched the search for all their European websites to a Apache Solr based solution.
Now their customers benefit from an incredibly fast and feature rich solution that is much more than just a search and has become a valuable sales-driving tool for Panasonic. Features like relevancy manipulation, autosuggest, contextual filtering for properties like color or product category were implemented under not the most ideal circumstances mainly that there was no access to structured data. The search was rolled out in close to 30 countries so far also putting Solr multi-lingual handling to a test.
The document discusses SoundCloud's transition from a monolithic Rails application to a microservices architecture. It describes how SoundCloud started on Rails which led to a monolith, challenges with large monolithic teams, and the steps taken to split into independent services including stabilizing the existing app, creating interface guidelines, minimizing overhead, and making deployments easy. The transition involved moving some services to other languages like Clojure, Scala and Ruby while reducing pull request times and moving to smaller independent teams.
A review of some common pitfalls and how to avoid or discover them. Includes a quick overview of some of the debugging tools available (as of late 2009). Generic web dev content as well as YUI-specific content.
10 Web Development Concepts a Designer Should KnowRachel Andrew
The document discusses 10 key concepts that web designers should know about web development. It covers topics like writing brief descriptions, understanding user workflows, using programming constructs like conditional logic and loops, storing data, using source control, developing in professional environments, code reuse, form validation, and e-commerce/payment processing.
Similar to Scale like an ant, distribute the workload - DPC, Amsterdam, 2011 (20)
The document discusses PHP Archives (Phar), which allow packaging of multiple PHP files into a single file. Phar is built into PHP and provides advantages like single file downloads, easy upgrades, and security against modifications. Key aspects of Phar include the stub, manifest, file contents, and optional signature. Phar can be used to distribute full applications, libraries, plugins and more via a single file.
You’ve used all the server-side caching tricks in the book: memcache, APC, database cache and so on to squeeze every millisecond out, and now your site is as fast as it will ever get. Well guess again!
These technologies are caching and creating the HTML which, if they done correctly, is only 10 – 20% of the user response time, so there is a lot of room for improvement. Learn how to optimize your JavaScript, CSS, Images, Cookies and a whole slew of other things that make frontend caching a magical place.
Many services / applications now a day are ill equipped with handling a sudden rush of popularity, as is often the case on the internet now a days, to a point where the services either become unavailable or unbearably slow.
By taking a chapter from the ant colonies in the wild, where their strength lies in their numbers and the fact that everyone works together towards the same goal, we can apply the same principle to our service by using systems such as
- gearman
- memcache
- daemons
- message queues
- load balancers
and many more, you can achieve greater performance, more redundancy, higher availability and have the ability to scale your services up and down as required easily.
During this talk attendees will be lead through the world of distributed systems and scalability, and shown the how, where and what, of how to take the average application and splitting it into smaller more manageable pieces
This document summarizes a presentation about frontend caching. It discusses techniques for improving website performance such as reducing HTTP requests, optimizing images, minifying files, enabling compression, using a content delivery network, and tools for testing performance. The presentation emphasizes optimizing elements that impact user perception of speed like above-the-fold content and decreasing page weight.
You’ve used all the server-side caching tricks in the book: memcache, APC, database cache and so on to squeeze every millisecond out, and now your site is as fast as it will ever get. Well guess again! These technologies are caching and creating the HTML which, if they done correctly, is only 10 – 20% of the user response time, so there is a lot of room for improvement. Learn how to optimize your JavaScript, CSS, Images, Cookies and a whole slew of other things that make frontend caching a magical place.
Anyone that has written a Content Management System or a blog system, has quickly realised that people will want to extend the functionality of the application and thus the developer has to embark on a journey to write a plugin system with everything that comes with that.
One of the biggest parts of any plugin system is the part that deals with discovery, installation, upgrading, dependency handling, infrastructure and other equally boring things. An essential part of any plugin system yet everyone dreads writing it, and few actually take on the task of writing it.
With Pyrus (the new PEAR installer) these tasks will not only be easy to do but also a joy. By embedding Pyrus in your application with its lavish new APIs you can use a tried and tested solution that hundred of thousands of people use every day on their command line, but you will be able to provide it right IN your tool, in your admin area, properly integrated with the layout and dictating the flow of the processes so it fits the ideologies of your software. Learn how to provide your users with fantastic experience, at the low price of using in the Pyrus installer in your application instead of trying to write your own solution.
- The document discusses PEAR2 and Pyrus, which are overhauls of the PEAR library and installer for PHP.
- Key aspects of PEAR2 include using PHP 5.3+, a new installer, packages going through a sandbox process before release, improved documentation, and namespaces.
- Pyrus is the new installer, which is easier to use, can package entire apps, and has improved security compared to the old installer.
- Details are provided on how to generate PEAR2 packages and use the Pyrus installer command line.
You have done all the caching tricks in the book on the server side: memcache, apc, database cache and so on and squeezed every millisecond out of it, now your site is as fast as it will ever get. Well guess again !
Too often people forget that what you are effectively caching and creating with those technologies is the HTML part of the user response time, now if they are done correctly then HTML is 10 - 20% of your users response time, so there is room for a whole lot of improvements on those other 80 - 90%.
You will be taken through a couple of important steps to achieve this, such as how to optimize your JavaScript, CSS, Images, Cookies and a whole sleeve of other things that make frontend caching the magical place that it is.
After having attended this talk you will not only have learned to make your sites faster for your long term users but also people coming for the first time as well as people on slower connections.
This document discusses various techniques for improving website performance and reducing page load times, such as reducing the number and size of HTTP requests, optimizing files by minifying and compressing code, leveraging browser caching, and using content delivery networks. Some specific recommendations include minimizing unnecessary cookies, combining and compressing JavaScript and CSS files, moving scripts lower on pages, using cache headers, and testing pages on slow connections to identify bottlenecks.
The document announces a caching conference to be held in Amsterdam in June 2009. It lists the backgrounds of two speakers - one the head of R&D at echolibre and pear extraordinaire from Iceland, and the other a php core developer from Jelsoft who is from Scotland. It also provides some brief outlines of processes involving identifying, analyzing and fixing performance issues.
This document summarizes the PEAR Installer and how it can be used to deploy applications and split websites into logical plugin packages. The PEAR Installer allows for file roles, tasks, post-installation tasks, and upgrading of packages that depend on external packages. It discusses splitting a site into plugins, maintaining separate PEAR configurations for each website, and using post-installation tasks for database setup or virtual host configuration. Real-world examples of using these features on pear.php.net are provided.
Have you come up with the next big thing? Coding it is something every new startup faces but what happens when it really does becomes the next big thing and servers start to crawl under the load?
In this workshop we'll cover a number of ways to identify bottlenecks and how to solve them once found. We'll also cover how to perform some extra scaling without expensive hardware.
* Benchmarking (f.ex. ab)
* Profiling with Xdebug
* Memcache
* APC
* and various other caching methodologies
Hopefully this will prevent you from becoming the next failwhale.
Have you come up with the next big thing? Coding it is something every new startup faces but what happens when it really does becomes the next big thing and servers start to crawl under the load?
In this workshop we'll cover a number of ways to identify bottlenecks and how to solve them once found. We'll also cover how to perform some extra scaling without expensive hardware.
* Benchmarking (f.ex. ab)
* Profiling with Xdebug
* Memcache
* APC
* and various other caching methodologies
Hopefully this will prevent you from becoming the next failwhale.
You have done all the caching tricks in the book on the server side: memcache, apc, database cache and so on and squeezed every millisecond out of it, now your site is as fast as it will ever get. Well guess again !
Too often people forget that what you are effectively caching and creating with those technologies is the HTML part of the user response time, now if they are done correctly then HTML is 10 - 20% of your users response time, so there is room for a whole lot of improvements on those other 80 - 90%.
You will be taken through a couple of important steps to achieve this, such as how to optimize your JavaScript, CSS, Images, Cookies and a whole sleeve of other things that make frontend caching the magical place that it is.
After having attended this talk you will not only have learned to make your sites faster for your long term users but also people coming for the first time as well as people on slower connections.
The document discusses how to use the PEAR installer to easily deploy websites by splitting a site into logical packages. The PEAR installer allows for easy upgrading, dependencies between packages, custom file roles and post-installation tasks. It provides instructions on dismantling a site into packages, defining custom file roles and post-installation scripts.
Your One-Stop Shop for Python Success: Top 10 US Python Development Providersakankshawande
Simplify your search for a reliable Python development partner! This list presents the top 10 trusted US providers offering comprehensive Python development services, ensuring your project's success from conception to completion.
Dandelion Hashtable: beyond billion requests per second on a commodity serverAntonios Katsarakis
This slide deck presents DLHT, a concurrent in-memory hashtable. Despite efforts to optimize hashtables, that go as far as sacrificing core functionality, state-of-the-art designs still incur multiple memory accesses per request and block request processing in three cases. First, most hashtables block while waiting for data to be retrieved from memory. Second, open-addressing designs, which represent the current state-of-the-art, either cannot free index slots on deletes or must block all requests to do so. Third, index resizes block every request until all objects are copied to the new index. Defying folklore wisdom, DLHT forgoes open-addressing and adopts a fully-featured and memory-aware closed-addressing design based on bounded cache-line-chaining. This design offers lock-free index operations and deletes that free slots instantly, (2) completes most requests with a single memory access, (3) utilizes software prefetching to hide memory latencies, and (4) employs a novel non-blocking and parallel resizing. In a commodity server and a memory-resident workload, DLHT surpasses 1.6B requests per second and provides 3.5x (12x) the throughput of the state-of-the-art closed-addressing (open-addressing) resizable hashtable on Gets (Deletes).
HCL Notes and Domino License Cost Reduction in the World of DLAUpanagenda
Webinar Recording: https://www.panagenda.com/webinars/hcl-notes-and-domino-license-cost-reduction-in-the-world-of-dlau/
The introduction of DLAU and the CCB & CCX licensing model caused quite a stir in the HCL community. As a Notes and Domino customer, you may have faced challenges with unexpected user counts and license costs. You probably have questions on how this new licensing approach works and how to benefit from it. Most importantly, you likely have budget constraints and want to save money where possible. Don’t worry, we can help with all of this!
We’ll show you how to fix common misconfigurations that cause higher-than-expected user counts, and how to identify accounts which you can deactivate to save money. There are also frequent patterns that can cause unnecessary cost, like using a person document instead of a mail-in for shared mailboxes. We’ll provide examples and solutions for those as well. And naturally we’ll explain the new licensing model.
Join HCL Ambassador Marc Thomas in this webinar with a special guest appearance from Franz Walder. It will give you the tools and know-how to stay on top of what is going on with Domino licensing. You will be able lower your cost through an optimized configuration and keep it low going forward.
These topics will be covered
- Reducing license cost by finding and fixing misconfigurations and superfluous accounts
- How do CCB and CCX licenses really work?
- Understanding the DLAU tool and how to best utilize it
- Tips for common problem areas, like team mailboxes, functional/test users, etc
- Practical examples and best practices to implement right away
AppSec PNW: Android and iOS Application Security with MobSFAjin Abraham
Mobile Security Framework - MobSF is a free and open source automated mobile application security testing environment designed to help security engineers, researchers, developers, and penetration testers to identify security vulnerabilities, malicious behaviours and privacy concerns in mobile applications using static and dynamic analysis. It supports all the popular mobile application binaries and source code formats built for Android and iOS devices. In addition to automated security assessment, it also offers an interactive testing environment to build and execute scenario based test/fuzz cases against the application.
This talk covers:
Using MobSF for static analysis of mobile applications.
Interactive dynamic security assessment of Android and iOS applications.
Solving Mobile app CTF challenges.
Reverse engineering and runtime analysis of Mobile malware.
How to shift left and integrate MobSF/mobsfscan SAST and DAST in your build pipeline.
For the full video of this presentation, please visit: https://www.edge-ai-vision.com/2024/06/temporal-event-neural-networks-a-more-efficient-alternative-to-the-transformer-a-presentation-from-brainchip/
Chris Jones, Director of Product Management at BrainChip , presents the “Temporal Event Neural Networks: A More Efficient Alternative to the Transformer” tutorial at the May 2024 Embedded Vision Summit.
The expansion of AI services necessitates enhanced computational capabilities on edge devices. Temporal Event Neural Networks (TENNs), developed by BrainChip, represent a novel and highly efficient state-space network. TENNs demonstrate exceptional proficiency in handling multi-dimensional streaming data, facilitating advancements in object detection, action recognition, speech enhancement and language model/sequence generation. Through the utilization of polynomial-based continuous convolutions, TENNs streamline models, expedite training processes and significantly diminish memory requirements, achieving notable reductions of up to 50x in parameters and 5,000x in energy consumption compared to prevailing methodologies like transformers.
Integration with BrainChip’s Akida neuromorphic hardware IP further enhances TENNs’ capabilities, enabling the realization of highly capable, portable and passively cooled edge devices. This presentation delves into the technical innovations underlying TENNs, presents real-world benchmarks, and elucidates how this cutting-edge approach is positioned to revolutionize edge AI across diverse applications.
Conversational agents, or chatbots, are increasingly used to access all sorts of services using natural language. While open-domain chatbots - like ChatGPT - can converse on any topic, task-oriented chatbots - the focus of this paper - are designed for specific tasks, like booking a flight, obtaining customer support, or setting an appointment. Like any other software, task-oriented chatbots need to be properly tested, usually by defining and executing test scenarios (i.e., sequences of user-chatbot interactions). However, there is currently a lack of methods to quantify the completeness and strength of such test scenarios, which can lead to low-quality tests, and hence to buggy chatbots.
To fill this gap, we propose adapting mutation testing (MuT) for task-oriented chatbots. To this end, we introduce a set of mutation operators that emulate faults in chatbot designs, an architecture that enables MuT on chatbots built using heterogeneous technologies, and a practical realisation as an Eclipse plugin. Moreover, we evaluate the applicability, effectiveness and efficiency of our approach on open-source chatbots, with promising results.
Have you ever been confused by the myriad of choices offered by AWS for hosting a website or an API?
Lambda, Elastic Beanstalk, Lightsail, Amplify, S3 (and more!) can each host websites + APIs. But which one should we choose?
Which one is cheapest? Which one is fastest? Which one will scale to meet our needs?
Join me in this session as we dive into each AWS hosting service to determine which one is best for your scenario and explain why!
For the full video of this presentation, please visit: https://www.edge-ai-vision.com/2024/06/how-axelera-ai-uses-digital-compute-in-memory-to-deliver-fast-and-energy-efficient-computer-vision-a-presentation-from-axelera-ai/
Bram Verhoef, Head of Machine Learning at Axelera AI, presents the “How Axelera AI Uses Digital Compute-in-memory to Deliver Fast and Energy-efficient Computer Vision” tutorial at the May 2024 Embedded Vision Summit.
As artificial intelligence inference transitions from cloud environments to edge locations, computer vision applications achieve heightened responsiveness, reliability and privacy. This migration, however, introduces the challenge of operating within the stringent confines of resource constraints typical at the edge, including small form factors, low energy budgets and diminished memory and computational capacities. Axelera AI addresses these challenges through an innovative approach of performing digital computations within memory itself. This technique facilitates the realization of high-performance, energy-efficient and cost-effective computer vision capabilities at the thin and thick edge, extending the frontier of what is achievable with current technologies.
In this presentation, Verhoef unveils his company’s pioneering chip technology and demonstrates its capacity to deliver exceptional frames-per-second performance across a range of standard computer vision networks typical of applications in security, surveillance and the industrial sector. This shows that advanced computer vision can be accessible and efficient, even at the very edge of our technological ecosystem.
Discover top-tier mobile app development services, offering innovative solutions for iOS and Android. Enhance your business with custom, user-friendly mobile applications.
Ivanti’s Patch Tuesday breakdown goes beyond patching your applications and brings you the intelligence and guidance needed to prioritize where to focus your attention first. Catch early analysis on our Ivanti blog, then join industry expert Chris Goettl for the Patch Tuesday Webinar Event. There we’ll do a deep dive into each of the bulletins and give guidance on the risks associated with the newly-identified vulnerabilities.
Main news related to the CCS TSI 2023 (2023/1695)Jakub Marek
An English 🇬🇧 translation of a presentation to the speech I gave about the main changes brought by CCS TSI 2023 at the biggest Czech conference on Communications and signalling systems on Railways, which was held in Clarion Hotel Olomouc from 7th to 9th November 2023 (konferenceszt.cz). Attended by around 500 participants and 200 on-line followers.
The original Czech 🇨🇿 version of the presentation can be found here: https://www.slideshare.net/slideshow/hlavni-novinky-souvisejici-s-ccs-tsi-2023-2023-1695/269688092 .
The videorecording (in Czech) from the presentation is available here: https://youtu.be/WzjJWm4IyPk?si=SImb06tuXGb30BEH .
The Microsoft 365 Migration Tutorial For Beginner.pptxoperationspcvita
This presentation will help you understand the power of Microsoft 365. However, we have mentioned every productivity app included in Office 365. Additionally, we have suggested the migration situation related to Office 365 and how we can help you.
You can also read: https://www.systoolsgroup.com/updates/office-365-tenant-to-tenant-migration-step-by-step-complete-guide/
Monitoring and Managing Anomaly Detection on OpenShift.pdfTosin Akinosho
Monitoring and Managing Anomaly Detection on OpenShift
Overview
Dive into the world of anomaly detection on edge devices with our comprehensive hands-on tutorial. This SlideShare presentation will guide you through the entire process, from data collection and model training to edge deployment and real-time monitoring. Perfect for those looking to implement robust anomaly detection systems on resource-constrained IoT/edge devices.
Key Topics Covered
1. Introduction to Anomaly Detection
- Understand the fundamentals of anomaly detection and its importance in identifying unusual behavior or failures in systems.
2. Understanding Edge (IoT)
- Learn about edge computing and IoT, and how they enable real-time data processing and decision-making at the source.
3. What is ArgoCD?
- Discover ArgoCD, a declarative, GitOps continuous delivery tool for Kubernetes, and its role in deploying applications on edge devices.
4. Deployment Using ArgoCD for Edge Devices
- Step-by-step guide on deploying anomaly detection models on edge devices using ArgoCD.
5. Introduction to Apache Kafka and S3
- Explore Apache Kafka for real-time data streaming and Amazon S3 for scalable storage solutions.
6. Viewing Kafka Messages in the Data Lake
- Learn how to view and analyze Kafka messages stored in a data lake for better insights.
7. What is Prometheus?
- Get to know Prometheus, an open-source monitoring and alerting toolkit, and its application in monitoring edge devices.
8. Monitoring Application Metrics with Prometheus
- Detailed instructions on setting up Prometheus to monitor the performance and health of your anomaly detection system.
9. What is Camel K?
- Introduction to Camel K, a lightweight integration framework built on Apache Camel, designed for Kubernetes.
10. Configuring Camel K Integrations for Data Pipelines
- Learn how to configure Camel K for seamless data pipeline integrations in your anomaly detection workflow.
11. What is a Jupyter Notebook?
- Overview of Jupyter Notebooks, an open-source web application for creating and sharing documents with live code, equations, visualizations, and narrative text.
12. Jupyter Notebooks with Code Examples
- Hands-on examples and code snippets in Jupyter Notebooks to help you implement and test anomaly detection models.
Driving Business Innovation: Latest Generative AI Advancements & Success StorySafe Software
Are you ready to revolutionize how you handle data? Join us for a webinar where we’ll bring you up to speed with the latest advancements in Generative AI technology and discover how leveraging FME with tools from giants like Google Gemini, Amazon, and Microsoft OpenAI can supercharge your workflow efficiency.
During the hour, we’ll take you through:
Guest Speaker Segment with Hannah Barrington: Dive into the world of dynamic real estate marketing with Hannah, the Marketing Manager at Workspace Group. Hear firsthand how their team generates engaging descriptions for thousands of office units by integrating diverse data sources—from PDF floorplans to web pages—using FME transformers, like OpenAIVisionConnector and AnthropicVisionConnector. This use case will show you how GenAI can streamline content creation for marketing across the board.
Ollama Use Case: Learn how Scenario Specialist Dmitri Bagh has utilized Ollama within FME to input data, create custom models, and enhance security protocols. This segment will include demos to illustrate the full capabilities of FME in AI-driven processes.
Custom AI Models: Discover how to leverage FME to build personalized AI models using your data. Whether it’s populating a model with local data for added security or integrating public AI tools, find out how FME facilitates a versatile and secure approach to AI.
We’ll wrap up with a live Q&A session where you can engage with our experts on your specific use cases, and learn more about optimizing your data workflows with AI.
This webinar is ideal for professionals seeking to harness the power of AI within their data management systems while ensuring high levels of customization and security. Whether you're a novice or an expert, gain actionable insights and strategies to elevate your data processes. Join us to see how FME and AI can revolutionize how you work with data!
5th LF Energy Power Grid Model Meet-up SlidesDanBrown980551
5th Power Grid Model Meet-up
It is with great pleasure that we extend to you an invitation to the 5th Power Grid Model Meet-up, scheduled for 6th June 2024. This event will adopt a hybrid format, allowing participants to join us either through an online Mircosoft Teams session or in person at TU/e located at Den Dolech 2, Eindhoven, Netherlands. The meet-up will be hosted by Eindhoven University of Technology (TU/e), a research university specializing in engineering science & technology.
Power Grid Model
The global energy transition is placing new and unprecedented demands on Distribution System Operators (DSOs). Alongside upgrades to grid capacity, processes such as digitization, capacity optimization, and congestion management are becoming vital for delivering reliable services.
Power Grid Model is an open source project from Linux Foundation Energy and provides a calculation engine that is increasingly essential for DSOs. It offers a standards-based foundation enabling real-time power systems analysis, simulations of electrical power grids, and sophisticated what-if analysis. In addition, it enables in-depth studies and analysis of the electrical power grid’s behavior and performance. This comprehensive model incorporates essential factors such as power generation capacity, electrical losses, voltage levels, power flows, and system stability.
Power Grid Model is currently being applied in a wide variety of use cases, including grid planning, expansion, reliability, and congestion studies. It can also help in analyzing the impact of renewable energy integration, assessing the effects of disturbances or faults, and developing strategies for grid control and optimization.
What to expect
For the upcoming meetup we are organizing, we have an exciting lineup of activities planned:
-Insightful presentations covering two practical applications of the Power Grid Model.
-An update on the latest advancements in Power Grid -Model technology during the first and second quarters of 2024.
-An interactive brainstorming session to discuss and propose new feature requests.
-An opportunity to connect with fellow Power Grid Model enthusiasts and users.
Connector Corner: Seamlessly power UiPath Apps, GenAI with prebuilt connectorsDianaGray10
Join us to learn how UiPath Apps can directly and easily interact with prebuilt connectors via Integration Service--including Salesforce, ServiceNow, Open GenAI, and more.
The best part is you can achieve this without building a custom workflow! Say goodbye to the hassle of using separate automations to call APIs. By seamlessly integrating within App Studio, you can now easily streamline your workflow, while gaining direct access to our Connector Catalog of popular applications.
We’ll discuss and demo the benefits of UiPath Apps and connectors including:
Creating a compelling user experience for any software, without the limitations of APIs.
Accelerating the app creation process, saving time and effort
Enjoying high-performance CRUD (create, read, update, delete) operations, for
seamless data management.
Speakers:
Russell Alfeche, Technology Leader, RPA at qBotic and UiPath MVP
Charlie Greenberg, host
113. Benefits
Easy management
Ability to stop / start servers quickly
Responsibilities are separate
Quickly move to a new cluster
Thursday, 19 May 2011
114. Benefits
Easy management
Ability to stop / start servers quickly
Responsibilities are separate
Quickly move to a new cluster
Reduced risk
Thursday, 19 May 2011
154. Your Client Code
Gearman Client API
(C, PHP, Perl, MySQL UDF, ...)
Gearman Job Server
gearmand
Gearman Worker API
(C, PHP, Perl, Python, ...)
Your Worker Code
Your App Gearman
Thursday, 19 May 2011
200. Map
Master gets a problem to solve
Breaks into multiple sub-problems
Thursday, 19 May 2011
201. Map
Master gets a problem to solve
Breaks into multiple sub-problems
Distributed to multiple workers
Thursday, 19 May 2011
202. Map
Master gets a problem to solve
Breaks into multiple sub-problems
Distributed to multiple workers
A worker can take the same steps
Thursday, 19 May 2011
203. Map
Master gets a problem to solve
Breaks into multiple sub-problems
Distributed to multiple workers
A worker can take the same steps
Answer passed back to Master
Thursday, 19 May 2011