Stress Test Drupal on Amazon EC2 vs. RackSpace cloud

The document discusses website performance and optimization. It notes that nearly half of users expect a site to load within 2 seconds and will abandon a site taking longer than 3 seconds. Common issues causing poor performance are bloated templates, unnecessary code, and too many HTTP requests. Suggested optimizations include minimizing assets, prioritizing visible content, image optimization, caching, compression, and lazy loading. Case studies show significant speed improvements after implementing optimizations. Metrics like Speed Index measure how quickly visible content displays to influence perceived performance.

The document discusses optimizing Magento hosting to increase online sales. It describes a case study of a travel website that experienced a catastrophic event due to a locked database from high query volumes. The root cause was identified and a solution was implemented using a "McManus Magic Shield" to block cache rebuilds if one was already in progress. Load testing results showed that code quality and site configuration are major factors in Magento performance. Best practices for development like reducing requests and using caching can significantly improve scalability. Faster page loading directly correlates to increased conversion rates.

Your website performance is crucial to its success. It is essential that you analyse your website’s speed and take critical steps to improve performance metrics. If you don’t, If you don’t, not only do you lose visitors, but you might be losing a lot of business as well. For this reason, WPblog has released a complete guide on WordPress performance optimization where you can learn how to analyse your website speed, and improve its performance. Source: https://www.wpblog.com/ebook-library/wordpress-performance-optimization

This document discusses various techniques for optimizing ASP.NET applications to scale from thousands to millions of users. It covers topics such as preventing denial of service attacks, optimizing the ASP.NET process model and pipeline, reducing the size of ASP.NET cookies on static content, improving System.net settings, optimizing queries to ASP.NET membership providers, issues with LINQ to SQL, using transaction isolation levels to prevent deadlocks, and employing a content delivery network. The overall message is that ASP.NET requires various "hacks" at the code, database, and configuration levels to scale to support millions of hits.

Studies have identified speed as the single most critical factor for e-commerce conversion. There are lots of changes you could make to your website, but none of them are as risk-free as increasing speed. Some people like yellow, some like blue, but nobody likes slow. This talk will explain how to measure speed, and how to make your site much faster with minimal effort.

Nicholas Zakas presented on optimizing the performance of the Yahoo homepage redesign from 2010. The new design added significant functionality but also increased page size and complexity, threatening performance. Areas of focus included reducing time to interactivity, improving Ajax responsiveness, and managing perceived performance. Through techniques like progressive rendering, non-blocking JavaScript loading, and indicating loading states, performance was improved and maintained users' perception of speed. The redesign achieved onload times of ~2.5 seconds, down from ~5 previously, while perceived performance matched the previous version.

by @thoaud from WordCamp Nordic 2019. Introduction to The Performance First Workflow in WordPress.

This document discusses optimizing Joomla templates for high performance. It recommends tools like Firebug and YSlow to measure performance, and optimizing assets like JavaScript, CSS, and images. JavaScript should be moved to the end of the page, unused code removed, and files minified and compressed. CSS should be moved to the head and stripped of unused rules. Images can be optimized by using sprites, compression, and delivery via a CDN. The optimization process involves these techniques applied at each stage of development.

Many small startups build their systems on top of a traditional toolset like Tomcat, Hibernate, and MySQL. These systems are used because they facilitate easy development and fast progress, but many of them are monolithic and have limited scalability. So as a startup grows, the team is confronted with the problem of how to evolve the system and make it scalable. Facing the same dilemma, Wix.com grew from 0 to 70 million users in just a few years. Facing some interesting challenges, like performance and availability. Traditional performance solutions, such as caching, would not help due to a very long tail problem which causes caching to be highly inefficient. And because every minute of downtime means customers lose money, the product needed to have near 100% availability. Solving these issues required some interesting and out-of-the-box thinking, and this talk will discuss some of these strategies: building a highly preformant, highly available and highly scalable system; and leveraging microservices architecture and multi-cloud platforms to help build a very efficient and cost-effective system.

This document discusses client-side performance optimizations for websites. It begins by explaining how client-side loading accounts for 80-90% of total page load time on average. It then provides an overview of tools for analyzing performance bottlenecks. The document outlines several basic optimization techniques, including reducing HTTP requests, leveraging browser caching through headers and cache busters, optimizing images, prioritizing critical resources, and improving JavaScript and CSS performance. It emphasizes the importance of measuring performance before and after making changes.

Quickling and PageCache are two software abstractions at Facebook that improve front-end performance. Quickling makes the site faster by using AJAX to transparently load pages without reloading common elements. PageCache caches user-visited pages in the browser to improve latency and reduce server load when pages are revisited. Both have significantly reduced Facebook's page rendering times and improved the user experience.

The document discusses client side performance testing. It defines client side performance as how fast a page loads for a single user on a browser or mobile device. Good client side performance is important for user experience and business metrics like sales. It recommends rules for faster loading websites, and introduces the WebPageTest tool for measuring client side performance metrics from multiple locations. WebPageTest provides waterfall views, filmstrip views, packet captures and reports to analyze page load times and identify optimization opportunities.

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.

This document discusses how to maintain large web applications over time. It describes how the author's team managed a web application with over 65,000 lines of code and 6,000 automated tests over 2.5 years of development. Key aspects included packaging full releases, automating dependency installation, specifying supported environments, and automating data migrations during upgrades. The goal was to have a sustainable process that allowed for continuous development without slowing down due to maintenance issues.

This document provides an overview and agenda for a workshop on content management systems (CMS) and blogging platforms such as WordPress. It discusses setting up WordPress from scratch using a local web server, then deploying it on a hosted server by registering a domain, modifying DNS records, installing WordPress, and configuring the files and database. The document outlines WordPress features and administration including plugins, themes, posts, pages, and SEO. It also covers using purchased WordPress themes, customizing themes, and building a CMS system using a theme framework.

Speed! presentation given at the CMS Expo on May 2011. Presentation talks about why it is important to speed up a website and how to do it.

What you need to know to upgrade to a self-hosted WP website. An overview of WordPress website hosting options and their impact on your WordPress website. A visual map of the site setup path through Dashboard menus and settings.

This document discusses the importance of performance testing cloud applications and outlines best practices for defining performance requirements, testing methodology, and identifying issues. It provides examples of performance problems found in databases, applications, operating systems, and networks. The key goals of performance testing are to understand system behavior under load, find bottlenecks and hidden bugs, and verify that requirements are met.

The document discusses the scaling habits of ASP.NET applications over multiple versions from initial launch to large-scale business success. As an application grows from version 1 with a few users to version N with thousands of users, the key scaling challenges change from fixing logical problems to addressing performance bottlenecks and high availability requirements. The solutions also evolve from simple code optimizations to sophisticated architectures with load balancing, caching, and separate servers for web and database tiers.

This document provides guidance on interpreting and reporting performance test results. It discusses collecting various metrics like load, errors, response times and system resources during testing. It emphasizes aggregating the raw data into meaningful statistics and visualizing the results in graphs to gain insights. Key steps in the process include interpreting observations and correlations to develop hypotheses, assessing conclusions to make recommendations, and reporting the findings to stakeholders in a clear and actionable manner. The overall approach is to turn large amounts of data into a few insightful pictures and conclusions that can guide technical or business decisions.

The document discusses various techniques for achieving fault tolerance in distributed systems, including service coordination, handling high load, RPC mechanics, circuit breakers, N-modular redundancy, recovery blocks, actors and error kernels, and instance healers. It describes common issues that can occur like network failures and overloaded services, and explains solutions such as service discovery, load balancing, timeouts, and dynamically scaling services horizontally.