This is a presentation for International Lisp Conference 2012 which was held in Kyoto, Japan.
Clack is a web application environment for Common Lisp to make your web applications be portable and reusable by abstracting HTTP into a simple API.
In this paper, I describe what are problems in web development and how Clack solves them.
This is a presentation for International Lisp Conference 2012 which was held in Kyoto, Japan.
Clack is a web application environment for Common Lisp to make your web applications be portable and reusable by abstracting HTTP into a simple API.
In this paper, I describe what are problems in web development and how Clack solves them.
Real-time Data Ingestion from Kafka to ClickHouse with Deterministic Re-tries...HostedbyConfluent
In a real-time data ingestion pipeline for analytical processing, efficient and fast data loading to a columnar database such as ClickHouse favors large blocks over individual rows. Therefore, applications often rely on some buffering mechanism such as Kafka to store data temporarily, and having a message processing engine to aggregate Kafka messages into large blocks which then get loaded to the backend database. Due to various failures in this pipeline, a naive block aggregator that forms blocks without additional measures, would cause data duplication or data loss. We have developed a solution to avoid these issues, thereby achieving exactly-once delivery from Kafka to ClickHouse. Our solution utilizes Kafka’s metadata to keep track of blocks that we intend to send to ClickHouse, and later uses this metadata information to deterministically re-produce ClickHouse blocks for re-tries in case of failures. The identical blocks are guaranteed to be deduplicated by ClickHouse. We have also developed a run-time verification tool that monitors Kafka’s internal metadata topic, and raises alerts when the required invariants for exactly-once delivery are violated. Our solution has been developed and deployed to the production clusters that span multiple datacenters at eBay.
On-demand recording: nginx.com/resources/webinars/nginx-basics-best-practices
You’ve heard of NGINX and the benefits it can provide to your web application, but maybe you’re not sure how to get started. There are a lot of tutorials online, but they can be outdated and contradict each other, making things more challenging. In this webinar we’ll cover the basics of NGINX to help you effectively begin using it as part of your existing or new web app.
This webinar covers how to:
* Install NGINX and verify it's properly running
* Create NGINX configurations for reverse proxy, load balancer, etc.
* Improve performance using keepalives and other NGINX directives
* Debug and troubleshoot using NGINX logs
[야생의 땅: 듀랑고] 서버 아키텍처 - SPOF 없는 분산 MMORPG 서버Heungsub Lee
NDC14에서 발표한 "[야생의 땅: 듀랑고] 서버 아키텍처" 세션의 슬라이드입니다.
슬라이드에 설명이 많지 않은데, 디스이즈게임에서 발표 내용을 잘 정리해주었습니다. 기사도 함께 보시면 좋을 것 같습니다.
http://www.thisisgame.com/webzine/news/nboard/4/?n=54955
Measuring Real User Performance in the BrowserNicholas Jansma
To people responsible for the health of web properties, monitoring, measurement, and analysis of real-user experiences is key to delivering a consistent and delightful experience. Drawing on their experience with the open source boomerang project, Philip Tellis and Nic Jansma explore various tools and methods available to measure real-user performance in the browser.
Topics include:
Available browser APIs: Navigation Timing, Resource Timing (Levels 1 and 2), User Timing, Error Logging, and more
Measuring full-page apps
Measuring single-page apps
RUM SpeedIndex
Measuring continuity
Hacks when an API isn’t available
Avoiding the observer effect
Filtering data to get rid of noise
Identifying outliers and treating them differently
R2DBC started as an experiment to enable integration of SQL databases into systems that use reactive programming models. Now it specifies a robust specification that can be implemented to manage data in a fully-reactive and completely non-blocking fashion.
You’re ready to make your applications more responsive, scalable, fast and secure. Then it’s time to get started with NGINX. In this webinar, you will learn how to install NGINX from a package or from source onto a Linux host. We’ll then look at some common operating system tunings you could make to ensure your NGINX install is ready for prime time.
View full webinar on demand at http://nginx.com/resources/webinars/installing-tuning-nginx/
Real-time Data Ingestion from Kafka to ClickHouse with Deterministic Re-tries...HostedbyConfluent
In a real-time data ingestion pipeline for analytical processing, efficient and fast data loading to a columnar database such as ClickHouse favors large blocks over individual rows. Therefore, applications often rely on some buffering mechanism such as Kafka to store data temporarily, and having a message processing engine to aggregate Kafka messages into large blocks which then get loaded to the backend database. Due to various failures in this pipeline, a naive block aggregator that forms blocks without additional measures, would cause data duplication or data loss. We have developed a solution to avoid these issues, thereby achieving exactly-once delivery from Kafka to ClickHouse. Our solution utilizes Kafka’s metadata to keep track of blocks that we intend to send to ClickHouse, and later uses this metadata information to deterministically re-produce ClickHouse blocks for re-tries in case of failures. The identical blocks are guaranteed to be deduplicated by ClickHouse. We have also developed a run-time verification tool that monitors Kafka’s internal metadata topic, and raises alerts when the required invariants for exactly-once delivery are violated. Our solution has been developed and deployed to the production clusters that span multiple datacenters at eBay.
On-demand recording: nginx.com/resources/webinars/nginx-basics-best-practices
You’ve heard of NGINX and the benefits it can provide to your web application, but maybe you’re not sure how to get started. There are a lot of tutorials online, but they can be outdated and contradict each other, making things more challenging. In this webinar we’ll cover the basics of NGINX to help you effectively begin using it as part of your existing or new web app.
This webinar covers how to:
* Install NGINX and verify it's properly running
* Create NGINX configurations for reverse proxy, load balancer, etc.
* Improve performance using keepalives and other NGINX directives
* Debug and troubleshoot using NGINX logs
[야생의 땅: 듀랑고] 서버 아키텍처 - SPOF 없는 분산 MMORPG 서버Heungsub Lee
NDC14에서 발표한 "[야생의 땅: 듀랑고] 서버 아키텍처" 세션의 슬라이드입니다.
슬라이드에 설명이 많지 않은데, 디스이즈게임에서 발표 내용을 잘 정리해주었습니다. 기사도 함께 보시면 좋을 것 같습니다.
http://www.thisisgame.com/webzine/news/nboard/4/?n=54955
Measuring Real User Performance in the BrowserNicholas Jansma
To people responsible for the health of web properties, monitoring, measurement, and analysis of real-user experiences is key to delivering a consistent and delightful experience. Drawing on their experience with the open source boomerang project, Philip Tellis and Nic Jansma explore various tools and methods available to measure real-user performance in the browser.
Topics include:
Available browser APIs: Navigation Timing, Resource Timing (Levels 1 and 2), User Timing, Error Logging, and more
Measuring full-page apps
Measuring single-page apps
RUM SpeedIndex
Measuring continuity
Hacks when an API isn’t available
Avoiding the observer effect
Filtering data to get rid of noise
Identifying outliers and treating them differently
R2DBC started as an experiment to enable integration of SQL databases into systems that use reactive programming models. Now it specifies a robust specification that can be implemented to manage data in a fully-reactive and completely non-blocking fashion.
You’re ready to make your applications more responsive, scalable, fast and secure. Then it’s time to get started with NGINX. In this webinar, you will learn how to install NGINX from a package or from source onto a Linux host. We’ll then look at some common operating system tunings you could make to ensure your NGINX install is ready for prime time.
View full webinar on demand at http://nginx.com/resources/webinars/installing-tuning-nginx/
JP Chaosmap 2015-2016
Japanese Digital Advertising Landscape, in 2015-2016.
※本資料は作者の所属企業や、所属企業の取引関係を示すものではありません
※皆様の幅広いビジネスシーンに使って頂くべく公開しておりますので加筆、再利用などは自由にして頂いて構いませんが、あくまで本家はLUMAscapeであることをご理解頂き、ご活用くださいますようお願い申し上げます
Hacking with x86 Windows Tablet and mobile devices on openSUSE #opensuseasia17Netwalker lab kapper
This is openSUSE Asia Summit 2017 presentation materials.
I installed openSUSE a lot of mobile devices.
So let's install and play openSUSE!
2 in 1 Language English and Japanese.
#opensuse #opensuseja
Experimental Alternative Technological Stack. Web is terrible... We are going to remove everything except JavaScript.
• Impress (Highload Cloud Application Server for Node.js)
https://github.com/metarhia /Impress
• JSTP (JavaScript as a Transport Protocol)
https://github.com/ metarhia/JSTP
• Global Storage (JavaScript data structures as in-memory DBMS)
https://github.com/metarhia /GlobalStorage
• Console (is an Application Browser, no HTML, DOM, CSS, etc.)
https://github.com/metarhia /Console
Node.js 101 with Rami Sayar
Presented on September 18 2014 at
FITC's Web Unleashed Toronto 2014 Conference
More info at www.fitc.ca
OVERVIEW
Node.js is a runtime environment and library for running JavaScript applications outside the browser. Node.js is mostly used to run real-time server applications and shines through its performance using non-blocking I/O and asynchronous events. This talk will introduce you to Node.js by showcasing the environment and its two most popular libraries: express and socket.io.
TARGET AUDIENCE
Beginner web developers
ASSUMED AUDIENCE KNOWLEDGE
Working knowledge of JavaScript and HTML5.
OBJECTIVE
Learn how to build a chat engine using Node.js and WebSockets.
FIVE THINGS AUDIENCE MEMBERS WILL LEARN
Node.js environment and basics
Node Package Manager overview
Web Framework, express, basics
WebSockets and Socket.io basics
Building a chat engine using Node.js
When Node.js Goes Wrong: Debugging Node in Production
The event-oriented approach underlying Node.js enables significant concurrency using a deceptively simple programming model, which has been an important factor in Node's growing popularity for building large scale web services. But what happens when these programs go sideways? Even in the best cases, when such issues are fatal, developers have historically been left with just a stack trace. Subtler issues, including latency spikes (which are just as bad as correctness bugs in the real-time domain where Node is especially popular) and other buggy behavior often leave even fewer clues to aid understanding. In this talk, we will discuss the issues we encountered in debugging Node.js in production, focusing upon the seemingly intractable challenge of extracting runtime state from the black hole that is a modern JIT'd VM.
We will describe the tools we've developed for examining this state, which operate on running programs (via DTrace), as well as VM core dumps (via a postmortem debugger). Finally, we will describe several nasty bugs we encountered in our own production environment: we were unable to understand these using existing tools, but we successfully root-caused them using these new found abilities to introspect the JavaScript VM.
"You Don't Know NODE.JS" by Hengki Mardongan Sihombing (Urbanhire)Tech in Asia ID
Hengki Sihombing is the Co-Founder and CTO Urbanhire, a technology company who provides Software as a Service (SaaS) for Hiring and Recruitment and also Job search agregator for jobseeker.
Before founding Urbanhire, Hengki had over 10 years of professional experience in software development in companies like: OLX, Wego, Merah Putih Inc, GushCloud. Hengki also actively participates in various Technology communities. He founded and leads the JakartaJS Community with more than 1900 Members.
***
This slide was shared at Tech in Asia Product Development Conference 2017 (PDC'17) on 9-10 August 2017.
Get more insightful updates from TIA by subscribing techin.asia/updateselalu
The Cytoscape Cyberinfrastructure extends Cytoscape and its community into web-connected services.The CI is a Service Oriented Architecture that supports network biology oriented computations that can be orchestrated into repeatable workflows.
Key Trends Shaping the Future of Infrastructure.pdfCheryl Hung
Keynote at DIGIT West Expo, Glasgow on 29 May 2024.
Cheryl Hung, ochery.com
Sr Director, Infrastructure Ecosystem, Arm.
The key trends across hardware, cloud and open-source; exploring how these areas are likely to mature and develop over the short and long-term, and then considering how organisations can position themselves to adapt and thrive.
DevOps and Testing slides at DASA ConnectKari Kakkonen
My and Rik Marselis slides at 30.5.2024 DASA Connect conference. We discuss about what is testing, then what is agile testing and finally what is Testing in DevOps. Finally we had lovely workshop with the participants trying to find out different ways to think about quality and testing in different parts of the DevOps infinity loop.
Slack (or Teams) Automation for Bonterra Impact Management (fka Social Soluti...Jeffrey Haguewood
Sidekick Solutions uses Bonterra Impact Management (fka Social Solutions Apricot) and automation solutions to integrate data for business workflows.
We believe integration and automation are essential to user experience and the promise of efficient work through technology. Automation is the critical ingredient to realizing that full vision. We develop integration products and services for Bonterra Case Management software to support the deployment of automations for a variety of use cases.
This video focuses on the notifications, alerts, and approval requests using Slack for Bonterra Impact Management. The solutions covered in this webinar can also be deployed for Microsoft Teams.
Interested in deploying notification automations for Bonterra Impact Management? Contact us at sales@sidekicksolutionsllc.com to discuss next steps.
Builder.ai Founder Sachin Dev Duggal's Strategic Approach to Create an Innova...Ramesh Iyer
In today's fast-changing business world, Companies that adapt and embrace new ideas often need help to keep up with the competition. However, fostering a culture of innovation takes much work. It takes vision, leadership and willingness to take risks in the right proportion. Sachin Dev Duggal, co-founder of Builder.ai, has perfected the art of this balance, creating a company culture where creativity and growth are nurtured at each stage.
GDG Cloud Southlake #33: Boule & Rebala: Effective AppSec in SDLC using Deplo...James Anderson
Effective Application Security in Software Delivery lifecycle using Deployment Firewall and DBOM
The modern software delivery process (or the CI/CD process) includes many tools, distributed teams, open-source code, and cloud platforms. Constant focus on speed to release software to market, along with the traditional slow and manual security checks has caused gaps in continuous security as an important piece in the software supply chain. Today organizations feel more susceptible to external and internal cyber threats due to the vast attack surface in their applications supply chain and the lack of end-to-end governance and risk management.
The software team must secure its software delivery process to avoid vulnerability and security breaches. This needs to be achieved with existing tool chains and without extensive rework of the delivery processes. This talk will present strategies and techniques for providing visibility into the true risk of the existing vulnerabilities, preventing the introduction of security issues in the software, resolving vulnerabilities in production environments quickly, and capturing the deployment bill of materials (DBOM).
Speakers:
Bob Boule
Robert Boule is a technology enthusiast with PASSION for technology and making things work along with a knack for helping others understand how things work. He comes with around 20 years of solution engineering experience in application security, software continuous delivery, and SaaS platforms. He is known for his dynamic presentations in CI/CD and application security integrated in software delivery lifecycle.
Gopinath Rebala
Gopinath Rebala is the CTO of OpsMx, where he has overall responsibility for the machine learning and data processing architectures for Secure Software Delivery. Gopi also has a strong connection with our customers, leading design and architecture for strategic implementations. Gopi is a frequent speaker and well-known leader in continuous delivery and integrating security into software delivery.
The Art of the Pitch: WordPress Relationships and SalesLaura Byrne
Clients don’t know what they don’t know. What web solutions are right for them? How does WordPress come into the picture? How do you make sure you understand scope and timeline? What do you do if sometime changes?
All these questions and more will be explored as we talk about matching clients’ needs with what your agency offers without pulling teeth or pulling your hair out. Practical tips, and strategies for successful relationship building that leads to closing the deal.
JMeter webinar - integration with InfluxDB and GrafanaRTTS
Watch this recorded webinar about real-time monitoring of application performance. See how to integrate Apache JMeter, the open-source leader in performance testing, with InfluxDB, the open-source time-series database, and Grafana, the open-source analytics and visualization application.
In this webinar, we will review the benefits of leveraging InfluxDB and Grafana when executing load tests and demonstrate how these tools are used to visualize performance metrics.
Length: 30 minutes
Session Overview
-------------------------------------------
During this webinar, we will cover the following topics while demonstrating the integrations of JMeter, InfluxDB and Grafana:
- What out-of-the-box solutions are available for real-time monitoring JMeter tests?
- What are the benefits of integrating InfluxDB and Grafana into the load testing stack?
- Which features are provided by Grafana?
- Demonstration of InfluxDB and Grafana using a practice web application
To view the webinar recording, go to:
https://www.rttsweb.com/jmeter-integration-webinar
Smart TV Buyer Insights Survey 2024 by 91mobiles.pdf91mobiles
91mobiles recently conducted a Smart TV Buyer Insights Survey in which we asked over 3,000 respondents about the TV they own, aspects they look at on a new TV, and their TV buying preferences.
Transcript: Selling digital books in 2024: Insights from industry leaders - T...BookNet Canada
The publishing industry has been selling digital audiobooks and ebooks for over a decade and has found its groove. What’s changed? What has stayed the same? Where do we go from here? Join a group of leading sales peers from across the industry for a conversation about the lessons learned since the popularization of digital books, best practices, digital book supply chain management, and more.
Link to video recording: https://bnctechforum.ca/sessions/selling-digital-books-in-2024-insights-from-industry-leaders/
Presented by BookNet Canada on May 28, 2024, with support from the Department of Canadian Heritage.
Software Delivery At the Speed of AI: Inflectra Invests In AI-Powered QualityInflectra
In this insightful webinar, Inflectra explores how artificial intelligence (AI) is transforming software development and testing. Discover how AI-powered tools are revolutionizing every stage of the software development lifecycle (SDLC), from design and prototyping to testing, deployment, and monitoring.
Learn about:
• The Future of Testing: How AI is shifting testing towards verification, analysis, and higher-level skills, while reducing repetitive tasks.
• Test Automation: How AI-powered test case generation, optimization, and self-healing tests are making testing more efficient and effective.
• Visual Testing: Explore the emerging capabilities of AI in visual testing and how it's set to revolutionize UI verification.
• Inflectra's AI Solutions: See demonstrations of Inflectra's cutting-edge AI tools like the ChatGPT plugin and Azure Open AI platform, designed to streamline your testing process.
Whether you're a developer, tester, or QA professional, this webinar will give you valuable insights into how AI is shaping the future of software delivery.
LF Energy Webinar: Electrical Grid Modelling and Simulation Through PowSyBl -...DanBrown980551
Do you want to learn how to model and simulate an electrical network from scratch in under an hour?
Then welcome to this PowSyBl workshop, hosted by Rte, the French Transmission System Operator (TSO)!
During the webinar, you will discover the PowSyBl ecosystem as well as handle and study an electrical network through an interactive Python notebook.
PowSyBl is an open source project hosted by LF Energy, which offers a comprehensive set of features for electrical grid modelling and simulation. Among other advanced features, PowSyBl provides:
- A fully editable and extendable library for grid component modelling;
- Visualization tools to display your network;
- Grid simulation tools, such as power flows, security analyses (with or without remedial actions) and sensitivity analyses;
The framework is mostly written in Java, with a Python binding so that Python developers can access PowSyBl functionalities as well.
What you will learn during the webinar:
- For beginners: discover PowSyBl's functionalities through a quick general presentation and the notebook, without needing any expert coding skills;
- For advanced developers: master the skills to efficiently apply PowSyBl functionalities to your real-world scenarios.
PHP Frameworks: I want to break free (IPC Berlin 2024)Ralf Eggert
In this presentation, we examine the challenges and limitations of relying too heavily on PHP frameworks in web development. We discuss the history of PHP and its frameworks to understand how this dependence has evolved. The focus will be on providing concrete tips and strategies to reduce reliance on these frameworks, based on real-world examples and practical considerations. The goal is to equip developers with the skills and knowledge to create more flexible and future-proof web applications. We'll explore the importance of maintaining autonomy in a rapidly changing tech landscape and how to make informed decisions in PHP development.
This talk is aimed at encouraging a more independent approach to using PHP frameworks, moving towards a more flexible and future-proof approach to PHP development.
Dev Dives: Train smarter, not harder – active learning and UiPath LLMs for do...UiPathCommunity
💥 Speed, accuracy, and scaling – discover the superpowers of GenAI in action with UiPath Document Understanding and Communications Mining™:
See how to accelerate model training and optimize model performance with active learning
Learn about the latest enhancements to out-of-the-box document processing – with little to no training required
Get an exclusive demo of the new family of UiPath LLMs – GenAI models specialized for processing different types of documents and messages
This is a hands-on session specifically designed for automation developers and AI enthusiasts seeking to enhance their knowledge in leveraging the latest intelligent document processing capabilities offered by UiPath.
Speakers:
👨🏫 Andras Palfi, Senior Product Manager, UiPath
👩🏫 Lenka Dulovicova, Product Program Manager, UiPath
UiPath Test Automation using UiPath Test Suite series, part 3DianaGray10
Welcome to UiPath Test Automation using UiPath Test Suite series part 3. In this session, we will cover desktop automation along with UI automation.
Topics covered:
UI automation Introduction,
UI automation Sample
Desktop automation flow
Pradeep Chinnala, Senior Consultant Automation Developer @WonderBotz and UiPath MVP
Deepak Rai, Automation Practice Lead, Boundaryless Group and UiPath MVP
27. Open
None
(just a launcher)
Main Process
(Node.js)
Renderer Process
(Chromium)
React.js
Common Lisp Process
(SBCL)
Spawn
+ Common Lisp
28. Open
None
(just a launcher)
Main Process
(Node.js)
Renderer Process
(Chromium)
React.js
Common Lisp Process
(SBCL)
Spawn
Bidirectional Communication
+ Common Lisp
29. Open
None
(just a launcher)
Main Process
(Node.js)
Renderer Process
(Chromium)
React.js
Common Lisp Process
(SBCL)
Spawn
Bidirectional Communication
+ Common Lisp
Make an SBCL executable and bundle it
32. Open
None
(just a launcher)
Main Process
(Node.js)
Renderer Process
(Chromium)
React.js
Common Lisp Process
(SBCL)
Spawn
Bidirectional Communication
+ Common Lisp
33. Open
None
(just a launcher)
Main Process
(Node.js)
Renderer Process
(Chromium)
React.js
Common Lisp Process
(SBCL)
Spawn
Bidirectional Communication
+ Common Lisp
34. Communication between CL and Browser
• MUST be bidirectional
• MUST be asynchronous
• MUST be easy to handle with JavaScript
• SHOULD be real-time
35. We decided to use JSON-RPC
• Small specification
• Not depends on a specific transport layer
• We use WebSocket
• http://jsonrpc.org
• https://github.com/fukamachi/jsonrpc
47. Benefits of Flux + JRPC Architecture
• JavaScript part is just a UI renderer
• Business logics are all in Common Lisp
• Common Lisp functions are easy to test
• Other components are also easy to test
• Because they all talk in JSON-RPC
54. Coin Counter IC Card Reader Printer
API Server
Hard to share data.
55. “brain”, the central storage
• All data(state) are in Common Lisp part
• What service the user chose?
• How much money is in the user’s IC card?
• How many coins are in?
• etc.
• It’s just a hash-table (with thread-lock).