Apache httpd Reverse Proxy and Tomcat

Abstract: In his talk Peter gives a brief introduction to WebSocket and discusses how real-time Web communications technologies can be applied to an always connected Web and mobile world. Then, he walks you through how to provide interactivity and collaboration by controlling physical objects remotely. The presentation features several live demonstrations of the concepts discussed throughout the session.

This document provides an overview of HTML5 WebSocket technology. It discusses limitations of traditional HTTP and how WebSocket enables full-duplex communication by reducing overhead and latency compared to alternative techniques like polling. The WebSocket API and protocol are introduced, along with browser support and server library options. Key benefits of WebSocket include unlimited connections per server, very small overhead, and true real-time bidirectional communication across the web.

Presentation by Peter Lubbers and Frank Salim presented at the San Francisco HTML5 User Group/GTUGSF Code Lab.

A Web Performance Dashboard can be set up and running in 90 minutes using freely available tools. The summary collects performance data from real users using boomerang.js and synthetic data from WebPagetest. The data is processed and stored using StatsD and Graphite. Finally, the dashboard is built by pulling the data into Piwik for visualization and monitoring.

This document discusses PageSpeed, a tool for just-in-time performance optimization of web pages. It provides automatic image compression and resizing, CSS and JavaScript minification, inline small files, caching, and deferring JavaScript among other optimizations. While most performance issues are well understood, not all websites are fast due to the tradeoff between speed and ease of maintenance. PageSpeed tools like mod_pagespeed can automate optimizations to improve performance without extra work from developers.

Pam Selle Co-author of Choosing a JavaScript Framework, thewebivore.com Tuesday, Oct 20th 4:20 pm - Design/UX/UI

There’s no one-size-fits-all approach to metrics. In this session, Cliff Crocker and I walk through various metrics that answer performance questions from multiple perspectives — from designer and DevOps to CRO and CEO. You’ll walk away with a better understanding of your options, as well as a clear understanding of how to choose the right metric for the right audience.

The document discusses strategies for loading third-party scripts asynchronously to improve page load performance. It notes that the frontend accounts for 80-90% of end user response time and recommends loading scripts asynchronously using techniques like async, defer, and loading scripts at the bottom of the page. It also discusses tools for monitoring performance when third-party scripts are blocked.

This session discusses the promise of interoperability in the Java EE 7 platform and what has been done—even now, at its time of release—to maintain this. The session shows how a Java EE 7 application can be easily built using NetBeans and JBoss development tools. This application can then be deployed on JBoss, GlassFish, and Oracle WebLogic, showing the promise of interoperability. The state of Java EE 7 compliance for different application servers is discussed and demonstrated.

The “caching ecosystem” has evolved over the years – what, where, and how long you cache your web assets are now important considerations for anyone doing business on the internet. Browser cache, html5 application cache, sophisticated reverse proxies like Varnish, and the evolution of CDNs have all elevated caching as the single most effective tool for creating high performing and scalable web applications. Using live demos, we will dive into some advance caching concepts that will enable you to squeeze the most benefits from this caching ecosystem, including: Prefresh Prefetching for sites Prefetching for single page apps Burst caching: caching for an extremely short burst of time, even a few seconds Dynamic page caching Cache invalidation and revalidation However, with caching power comes caching responsibility. If not implemented correctly, these advanced techniques can degrade or even break site functionality. We will conclude with some practical exercises to define the caching strategy for key use cases: E-commerce website Mobile application High traffic events.

This document discusses best practices for designing, scaling, and maintaining large-scale web applications. Some of the key points made include: having a consistent and flexible data model, loosely coupling components for easier testing and replacement, using caching strategies like page fragments and memcached, and emphasizing development practices like version control, testing, and monitoring performance. The document advocates for a modular architecture with components like load balancers, reverse proxies, caching layers, and asynchronous job queues.

This document summarizes Otto Kekäläinen's talk about investigating and recovering from a WordPress security breach at his company Seravo. On November 9th, 2018 four WordPress sites hosted by Seravo were compromised due to a vulnerability in the WP GDPR Compliance plugin. Seravo's security team launched an investigation that uncovered malicious user accounts, identified the vulnerable plugin as the entry point, and cleaned up the sites. The experience highlighted the importance of having an incident response plan even when security best practices are followed.

The document discusses the importance of resilience and failure preparation in cloud systems. It introduces the concept of "GameDay", which are large-scale exercises that inject faults across critical systems to increase an organization's resilience. These exercises help identify risks, reduce failure frequency and recovery time, and build confidence and competence in responding to failures. The document advocates designing infrastructure to be rebuildable from source code and data backups alone. It also stresses the importance of automation, emergencies tools testing, and culture of collaboration between dev and ops.

1. The document discusses a meetup about WebSocket and SPDY protocols on July 5th, 2012 presented by Kensaku Komatsu. 2. The presentation covered introductions to WebSocket and SPDY, how they address issues with HTTP such as slow loading of multiple resources, and compared their communication models and transport protocols. 3. The main topics were introductions to WebSocket and SPDY, and a deeper dive into the WebSocket protocol including its handshake process, data framing, ping/pong functionality, and additional aspects like subprotocols and extensions.

Presentation from the June 28, 2011 National Capital Area Google Technology Users Group on some of Google's efforts to make the web faster.

A 30 minute presentation given to the Toronto Web Performance Meetup about Google's PageSpeed and the SPDY Protocol. This presentation covers the following topics. - What is PageSpeed, how to use and install. - Should you use SPDY? Or wait for HTTP 2? - Shortcomings of HTTP 1.1

Write WebSockets Applications using the Atmosphere Framework, deploy them anywhere, with any browsers.

What new is Apache httpd 2.4, both in upgrading from httpd 2.2 and well as new features in this latest version. Performance, HTTP/2, reverse proxy and cache!

The document summarizes new features in Apache HTTPD version 2.4, including improved performance through the Event MPM, faster APR, and reduced memory usage. It describes new configuration options like finer timeout controls and the <If> directive. New modules like mod_lua and mod_proxy submodules are highlighted. The document also discusses how Apache has adapted to cloud computing through dynamic proxying, load balancing, and self-aware environments.

The document discusses the new features of Apache HTTP Server version 2.4, including performance improvements through more efficient modules and data structures, enhanced configuration options, new modules for capabilities like Lua scripting and remote IP access, and improved proxy functionality for dynamic and cloud environments. Key areas covered are performance, configuration, new modules, and proxy features.

Apache httpd v2.4 is well-suited for cloud environments due to improvements that increase performance, flexibility, and dynamic configuration capabilities. It has been enhanced as a reverse proxy with load balancing and support for additional protocols. Benchmark tests show that for transaction speed, the prefork MPM performs best, though other MPMs are on par for concurrency. Apache remains a robust and customizable web server option.

This document discusses deploying Plack web applications. It begins with an overview of the PSGI specification and how it allows various web frameworks like Catalyst and Dancer to run on different web servers through a common interface. It then discusses various options for the server environment including standalone HTTP servers like Starman and FastCGI servers. Finally, it covers useful Plack middleware for application environments, including modules for rate limiting, caching, authentication, and more.

Apache httpd v2.4 provides significant improvements for high performance and suitability for the cloud. Some key enhancements include improved reverse proxy capabilities, load balancing, bandwidth control, timeouts, and logging. Benchmark results show that Apache httpd can match or exceed the performance of Nginx for certain workloads. Overall, Apache httpd 2.4 remains highly competitive for both traditional and cloud-based web serving.

Talking about advanced performance optimization strategies at SMX Sydney 2013 covering request reduction & optimization, caching, mark-up tuning, database & webserver performance and much, much more!

The document discusses the navigator.registerProtocolHandler feature in web browsers. It allows websites to register custom protocols that can be triggered from links. The support for this feature exceeds 0.01% of users. Recent fixes addressed replacing only the first placeholder and removing an unnecessary parameter from unregisterProtocolHandler tests. Future work may involve handling security issues from hijacking or spamming and potentially adding an isProtocolHandlerRegistered method.

SpringOne Platform 2018 Numbers in the Hidden: A Pragmatic View of 'Nirvana' Bryan Kelly, Cerner; Greg Meyer, Cerner

This document discusses various techniques for optimizing the frontend performance of web applications. It provides 5 rules: 1) Only optimize when it makes a meaningful difference. 2) Download resources in parallel to reduce page load time. 3) Eliminate unnecessary requests through techniques like merging, inlining, sprites and caching. 4) Defer parsing of JavaScripts when possible to improve perceived page load speeds. 5) Consider factors like server location and content delivery networks to improve global performance.

This document discusses profiling PHP applications to improve performance. It recommends profiling during development to identify inefficiencies. The document introduces Xdebug for profiling PHP code and Webgrind, a PHP frontend for visualizing Xdebug profiles. It provides an example of profiling a sample PHP application, identifying issues, making code changes, and verifying performance improvements through re-profiling.

Boomerang is an open-source Real User Monitoring (RUM) JavaScript library used by thousands of websites to measure their visitor's experiences. The developers behind Boomerang take pride in building a reliable and performant third-party library that everyone can use without being concerned about its measurements affecting their site. We recently performed and shared an audit of Boomerang's performance, to help communicate its "cost of doing business", and in doing so we found several areas of code that we wanted to improve. We'll discuss how we performed the audit, some of the improvements we've made, how we're testing and validating our changes, and the real-time telemetry we capture for our library to ensure we're having as little of an impact as possible on the sites we're included on. Boomerang is an open-source Real User Monitoring (RUM) JavaScript library used by thousands of websites to measure their visitor's experiences. Boomerang runs on billions of page loads a day, either via the open-source library or as part of Akamai's mPulse RUM service. The developers behind Boomerang take pride in building a reliable and performant third-party library that everyone can use without being concerned about its measurements affecting their site. Recently, we performed and shared an audit of Boomerang's performance, to help communicate the "cost of doing business" of including Boomerang on a page while it takes its measurements. In doing the audit, we found several areas of code that we wanted to improve and have been making continuous improvements ever since. We've taken ideas and contributions from the OSS community, and have built a Performance Lab that helps "lock in" our improvements by continuously measuring the metrics that are important to us. We'll discuss how we performed the audit, some of the improvements we've made, how we're testing and validating our changes, and the real-time telemetry we capture on our library to ensure we're having as little of an impact as possible on the sites we're included on.

The document discusses optimizing web performance. It begins by defining critical rendering path optimization, which involves identifying the minimum CSS needed to render the initial viewport of a page. This critical CSS can be inlined into the page head to avoid an additional HTTP request. Non-critical CSS is then preloaded asynchronously so it downloads in parallel without blocking page rendering. Tracking paint metrics like first contentful paint and time to interactive is also recommended to measure performance improvements. Overall, the document emphasizes optimizing the critical resources needed for the initial page load.

In these slides, I explained about SDLC and how it differs from Git Flow. How to Build the project with git. And also I covers the content about the connection between git and github.

My slide deck from my session, AD113: Speed Up Your Applications with Nginx + PageSpeed, at MWLUG 2015 in Atlanta, GA at the Ritz-Carlton. For more, see: - https://edm00se.io/self-promotion/mwlug-ad113-success - https://github.com/edm00se/AD113-Speed-Up-Your-Apps-with-Nginx-and-PageSpeed

The document provides an overview of new features in Movable Type 5.2 from the perspective of a software engineer. Key new features include a rich text editor, ability for system administrators to restrict publishing paths, SMTP authentication, an upgraded tools interface, and support for running Movable Type on cloud platforms. It also discusses upgrades to the mail sending backend to support SSL/TLS, submision ports, and debugging. Additional sections cover implementing a PSGI interface for Movable Type to support pluggable web servers and reloading of configurations.