Caching techniques speed up user access to web content by reducing network and server loads. Caches store previous requests to serve future requests without contacting the origin server. Different replacement strategies determine which cached items to remove. Caches can be deployed in various network locations using forward, reverse, and interception proxies to improve performance for users and networks. Buffering and prefix caching help smooth delivery of streaming media by filling playback queues from caches.
This is a presentation made at the Burlington, Vermont PHP Users Group about configuring load balancing using the Apache HTTP Server. Load balancing is a technique that can distribute work across multiple server nodes—here we will discuss load balancing HTTP (i.e. web) traffic. There are many software and hardware load balancing options available including HAProxy, Varnish, Pound, Perlbal, Squid, nginx, and Linux-HA (High-Availability Linux) on Linux Standard Base (LSB). However, many web developers are already familiar with Apache as a web server and it is relatively easy to also configure Apache as a load balancer.
Related concepts such as shared nothing architecture are discussed. We also take a look at some basic load balancing scenarios and features including sticky sessions and proxying requests based on HTTP method. Distributed load testing with Tsung is briefly discussed as well.
How effectively scale Rails with Varnish. These slides cover reverse-proxies, HTTP headers, and cache invalidation. We'll also touch on writing VCL (Varnish Configuration Language).
This is a presentation made at the Burlington, Vermont PHP Users Group about configuring load balancing using the Apache HTTP Server. Load balancing is a technique that can distribute work across multiple server nodes—here we will discuss load balancing HTTP (i.e. web) traffic. There are many software and hardware load balancing options available including HAProxy, Varnish, Pound, Perlbal, Squid, nginx, and Linux-HA (High-Availability Linux) on Linux Standard Base (LSB). However, many web developers are already familiar with Apache as a web server and it is relatively easy to also configure Apache as a load balancer.
Related concepts such as shared nothing architecture are discussed. We also take a look at some basic load balancing scenarios and features including sticky sessions and proxying requests based on HTTP method. Distributed load testing with Tsung is briefly discussed as well.
How effectively scale Rails with Varnish. These slides cover reverse-proxies, HTTP headers, and cache invalidation. We'll also touch on writing VCL (Varnish Configuration Language).
These slides show how to reduce latency on websites and reduce bandwidth for improved user experience.
Covering network, compression, caching, etags, application optimisation, sphinxsearch, memcache, db optimisation
Content caching is one of the most effective ways to dramatically improve the performance of a web site. In this webinar, we’ll deep-dive into NGINX’s caching abilities and investigate the architecture used, debugging techniques and advanced configuration. By the end of the webinar, you’ll be well equipped to configure NGINX to cache content exactly as you need.
View full webinar on demand at http://nginx.com/resources/webinars/content-caching-nginx/
Basic concept of nginx , Apache Vs Nginx , Nginx as Loadbalancer , Nginx as Reverse proxy , Configuration of nginx as load balancer and reverse proxy .
SparkPost's Director of Support Scott Habicht talks through the new features in PMTA 5.0 and explains how companies can make the most of the new version.
Memcache is a high-performance, distributed memory object caching system, generic in nature, but intended for use in speeding up dynamic web applications by alleviating database load.
Learn how to load balance your applications following best practices with NGINX and NGINX Plus.
Join this webinar to learn:
- How to configure basic HTTP load balancing features
- The essential elements of load balancing: session persistence, health checks, and SSL termination
- How to load balance MySQL, DNS, and other common TCP/UDP applications
- How to have NGINX Plus automatically discover new service instances in an auto-scaling or microservices environment
October 14 2009 New York Web Performance Group Session.
Rusty Conover is talking about his experience at InfoGears building Content Delivery Network (CDN) on top of Amazon EC2
These slides show how to reduce latency on websites and reduce bandwidth for improved user experience.
Covering network, compression, caching, etags, application optimisation, sphinxsearch, memcache, db optimisation
Content caching is one of the most effective ways to dramatically improve the performance of a web site. In this webinar, we’ll deep-dive into NGINX’s caching abilities and investigate the architecture used, debugging techniques and advanced configuration. By the end of the webinar, you’ll be well equipped to configure NGINX to cache content exactly as you need.
View full webinar on demand at http://nginx.com/resources/webinars/content-caching-nginx/
Basic concept of nginx , Apache Vs Nginx , Nginx as Loadbalancer , Nginx as Reverse proxy , Configuration of nginx as load balancer and reverse proxy .
SparkPost's Director of Support Scott Habicht talks through the new features in PMTA 5.0 and explains how companies can make the most of the new version.
Memcache is a high-performance, distributed memory object caching system, generic in nature, but intended for use in speeding up dynamic web applications by alleviating database load.
Learn how to load balance your applications following best practices with NGINX and NGINX Plus.
Join this webinar to learn:
- How to configure basic HTTP load balancing features
- The essential elements of load balancing: session persistence, health checks, and SSL termination
- How to load balance MySQL, DNS, and other common TCP/UDP applications
- How to have NGINX Plus automatically discover new service instances in an auto-scaling or microservices environment
October 14 2009 New York Web Performance Group Session.
Rusty Conover is talking about his experience at InfoGears building Content Delivery Network (CDN) on top of Amazon EC2
IWMW 2003: C7 Bandwidth Management Techniques: Technical And Policy IssuesIWMW
Slides used in workshop session C7 on "Bandwidth Management Techniques: Technical And Policy Issues" at the IWMW 2003 event held at the University of Kent on 11-13 June 2003.
See http://www.ukoln.ac.uk/web-focus/events/workshops/webmaster-2003/sessions/#workshops-c
With the growing challenges we face with shortage of resources there is a constant need to improve scalability and performance. Fortunately Java EE 7 and Java SE 7 has provided a rich set of APIs which can be used to avoid the conventional request-response paradigm. The session will span across JSRs cover how JAX-RS, Servlets, WebSockets, EJB provide support to submit asynchronous requests and cover topics like callbacks, timeouts, client side asynchrony, API like non blocking IO and lots of good stuff from Java EE 7 and Java SE 7 . Prerequisite: An open mind and be ready to “Think async”
Spreadshirt Techcamp 2018 - Hold until ToldMartin Breest
Using content tagging and purging to get back control over freshness of cached content at the edge thereby improving performance and resilience of your services
Dynamic Content Acceleration: Lightning Fast Web Apps with Amazon CloudFront ...Amazon Web Services
Traditionally, content delivery networks (CDNs) were known to accelerate static content. Amazon CloudFront has come a long way and now supports delivery of entire websites that include dynamic and static content. In this session, we introduce you to CloudFront’s dynamic delivery features that help improve the performance, scalability, and availability of your website while helping you lower your costs. We talk about architectural patterns such as SSL termination, close proximity connection termination, origin offload with keep-alive connections, and last-mile latency improvement. Also learn how to take advantage of Amazon Route 53's health check, automatic failover, and latency-based routing to build highly available web apps on AWS.
Web Performance in the Age of HTTP/2 - FEDay Conference, Guangzhou, China 19/...Holger Bartel
Web performance optimisation has been gaining ground and is slowly getting more of its deserved recognition. Now that we’ve learned to recognise this integral part of user experience and are approaching HTTP/2 as our new protocol of choice, some of our existing web performance best practices will turn into the new anti-patterns.
Talk slides from FEDay Conference in Guangzhou, China on 19/03/2016.
Carbon markets 101 introduces the market mechanisms under the Kyoto Protocol and related initiatives. It helps executives and managers understand emerging business issues around carbon trading, emission reduction projects and carbon monitoring.
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.
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.
Essentials of Automations: Optimizing FME Workflows with ParametersSafe Software
Are you looking to streamline your workflows and boost your projects’ efficiency? Do you find yourself searching for ways to add flexibility and control over your FME workflows? If so, you’re in the right place.
Join us for an insightful dive into the world of FME parameters, a critical element in optimizing workflow efficiency. This webinar marks the beginning of our three-part “Essentials of Automation” series. This first webinar is designed to equip you with the knowledge and skills to utilize parameters effectively: enhancing the flexibility, maintainability, and user control of your FME projects.
Here’s what you’ll gain:
- Essentials of FME Parameters: Understand the pivotal role of parameters, including Reader/Writer, Transformer, User, and FME Flow categories. Discover how they are the key to unlocking automation and optimization within your workflows.
- Practical Applications in FME Form: Delve into key user parameter types including choice, connections, and file URLs. Allow users to control how a workflow runs, making your workflows more reusable. Learn to import values and deliver the best user experience for your workflows while enhancing accuracy.
- Optimization Strategies in FME Flow: Explore the creation and strategic deployment of parameters in FME Flow, including the use of deployment and geometry parameters, to maximize workflow efficiency.
- Pro Tips for Success: Gain insights on parameterizing connections and leveraging new features like Conditional Visibility for clarity and simplicity.
We’ll wrap up with a glimpse into future webinars, followed by a Q&A session to address your specific questions surrounding this topic.
Don’t miss this opportunity to elevate your FME expertise and drive your projects to new heights of efficiency.
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.
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
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
Connector Corner: Automate dynamic content and events by pushing a buttonDianaGray10
Here is something new! In our next Connector Corner webinar, we will demonstrate how you can use a single workflow to:
Create a campaign using Mailchimp with merge tags/fields
Send an interactive Slack channel message (using buttons)
Have the message received by managers and peers along with a test email for review
But there’s more:
In a second workflow supporting the same use case, you’ll see:
Your campaign sent to target colleagues for approval
If the “Approve” button is clicked, a Jira/Zendesk ticket is created for the marketing design team
But—if the “Reject” button is pushed, colleagues will be alerted via Slack message
Join us to learn more about this new, human-in-the-loop capability, brought to you by Integration Service connectors.
And...
Speakers:
Akshay Agnihotri, Product Manager
Charlie Greenberg, Host
Elevating Tactical DDD Patterns Through Object CalisthenicsDorra BARTAGUIZ
After immersing yourself in the blue book and its red counterpart, attending DDD-focused conferences, and applying tactical patterns, you're left with a crucial question: How do I ensure my design is effective? Tactical patterns within Domain-Driven Design (DDD) serve as guiding principles for creating clear and manageable domain models. However, achieving success with these patterns requires additional guidance. Interestingly, we've observed that a set of constraints initially designed for training purposes remarkably aligns with effective pattern implementation, offering a more ‘mechanical’ approach. Let's explore together how Object Calisthenics can elevate the design of your tactical DDD patterns, offering concrete help for those venturing into DDD for the first time!
Neuro-symbolic is not enough, we need neuro-*semantic*Frank van Harmelen
Neuro-symbolic (NeSy) AI is on the rise. However, simply machine learning on just any symbolic structure is not sufficient to really harvest the gains of NeSy. These will only be gained when the symbolic structures have an actual semantics. I give an operational definition of semantics as “predictable inference”.
All of this illustrated with link prediction over knowledge graphs, but the argument is general.
Securing your Kubernetes cluster_ a step-by-step guide to success !KatiaHIMEUR1
Today, after several years of existence, an extremely active community and an ultra-dynamic ecosystem, Kubernetes has established itself as the de facto standard in container orchestration. Thanks to a wide range of managed services, it has never been so easy to set up a ready-to-use Kubernetes cluster.
However, this ease of use means that the subject of security in Kubernetes is often left for later, or even neglected. This exposes companies to significant risks.
In this talk, I'll show you step-by-step how to secure your Kubernetes cluster for greater peace of mind and reliability.
Epistemic Interaction - tuning interfaces to provide information for AI supportAlan Dix
Paper presented at SYNERGY workshop at AVI 2024, Genoa, Italy. 3rd June 2024
https://alandix.com/academic/papers/synergy2024-epistemic/
As machine learning integrates deeper into human-computer interactions, the concept of epistemic interaction emerges, aiming to refine these interactions to enhance system adaptability. This approach encourages minor, intentional adjustments in user behaviour to enrich the data available for system learning. This paper introduces epistemic interaction within the context of human-system communication, illustrating how deliberate interaction design can improve system understanding and adaptation. Through concrete examples, we demonstrate the potential of epistemic interaction to significantly advance human-computer interaction by leveraging intuitive human communication strategies to inform system design and functionality, offering a novel pathway for enriching user-system engagements.
De-mystifying Zero to One: Design Informed Techniques for Greenfield Innovati...
Caching Techniquesfor Content Delivery
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2. Basic Operations of a Web Cache Client Cache Sever HTTP:GET Stored? Fresh? HTTP:GET HTTP:RESPONSE tSore Copy? HTTP:RESPONSE No Yes HTTP:RESPONSE HTTP:GET File modified Caching works on the principle that the client request can be served from the cache Sanjoy Sanyal:http://www.itforintelligentfolks.blogspot.com/
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5. Placing a Network in a Cache: Forward Proxy Internet Web Server Web Clients Web Cache Forward Proxy Workgroup LAN Forward Proxy acts on behalf of content consumers The Request is first sent over the LAN to the Forward Proxy Network administrators set up Forward Proxy to help speed up web access for users Sanjoy Sanyal:http://www.itforintelligentfolks.blogspot.com/
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7. Placing a Network in a Cache: Reverse Proxy Internet Web Servers Web Clients Web Cache Reverse Proxy Sever LAN Also called sever accelerator Reverse Proxy acts on behalf of origin server The Request is sent first to the reverse proxy cache Web Farms set up reverse proxies to improve performance &scalability. Also reverse proxies can be located remotely near customers. Sanjoy Sanyal:http://www.itforintelligentfolks.blogspot.com/
8. Placing a Network in a Cache: Interception Proxy Internet Web Server Web Clients Web Cache Interception Proxy ISP Network Interception Proxy acts on behalf of the content traffic (the ISP) The Request is first sent over the ISP Network to the Interception Proxy ISPs set up Interception Proxy to help speed up web access for customers and reduce wide area bandwidth costs Sanjoy Sanyal:http://www.itforintelligentfolks.blogspot.com/
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10. Delays in Multimedia Streaming Server Client Client Request Playback begins Connection Delay Buffer Delay Total Delay = Connection Delay + Buffer Delay Sanjoy Sanyal:http://www.itforintelligentfolks.blogspot.com/
11. Fast Prefix Caching Server Client Cache Client Request To Cache Buffer From Stored Prefix From Cache Buffer ConnectionDelay Buffer Delay Playback Begins Prefix caching reduces the connection delay The client request is served by previously stored multimedia data Locating the cache close to the client and employing a fast connection reduces the connection delay Other advantage: the cache can serve as a splitter for multiple clients with only one connection to server Sanjoy Sanyal:http://www.itforintelligentfolks.blogspot.com/
12. Dynamic Caching Ring Buffer Server Client 1 Client 2 Patch t T+ Data for Client 1 Data for Client 2 Start caching Serve Client 2 from Cache How it works: Client 2 requests the same streaming object as Client 1 When Client 2 receives start of stream Client 1 has already received seconds of stream The temporal distance between the clients is The data streamed to Client 1 is cached in the ring buffer to be served to Client 2 Client 2 is served the initial seconds of stream by a patch from the server or a prefix T+2 Sanjoy Sanyal:http://www.itforintelligentfolks.blogspot.com/
![Caching Techniques ,[object Object],[object Object],[object Object],[object Object],Sanjoy Sanyal:http://www.itforintelligentfolks.blogspot.com/](https://image.slidesharecdn.com/cachingtechniquesforcontentdelivery-1208496668418585-9/85/Caching-Techniquesfor-Content-Delivery-1-320.jpg)
