Website & Internet + Performance testing

With the growth of mobile devices, performance is now more important than ever. But the web is actually getting slower! Fight back by learning how to monitor performance, the critical rendering path and finding where to optimize.

One of the most powerful tools that Fastly offers is worldwide, instant purge. Come learn the ins and outs of how HTTP invalidation works in general and how purge and surrogate keys can be used to improve your site's delivery and get even more value from Fastly. This talk will also cover the purge blast radius Surrogate Keys are an amazing way to purge your content from cache, but they can be a bit scary when you aren't sure how many URLs this surrogate key is tied to or what kind of affect this will have on origin. Join the USA Today Network as we explain how we leverage big data tools, Go APIs, New Relic, and Sumo Logic to provide our users a suite of tools for purging content from Fastly. Developers love knowing the blast radius of their surrogate keys, while our engineers love the real-time metrics and notifications we get when developers are hard-purging content.

The document discusses using Varnish to cache and load balance web application requests across multiple backend servers. It describes 4 steps: 1) activating caching on a single backend server, 2) introducing a new backend server for certain requests, 3) connecting the applications using Edge Side Includes, and 4) load balancing between two backend servers using a round-robin director. Varnish is configured using VCL files to define backends, directors, caching, and request routing rules.

This document discusses WordPress theme performance. It provides data from testing over 3,800 themes on metrics like speed score, number of resources, file sizes, and response bytes. The median theme in 2016 had a mobile speed score of 53, 432KB in total assets, and response bytes of 125KB for HTML, 101KB for CSS, and 155KB for JavaScript. Recommendations include optimizing assets by consolidating and minifying files, deferring non-essential scripts, and conditionally loading resources. The document emphasizes including performance in designs from the start and selecting themes that meet defined performance budgets.

HTTP/2 addresses limitations in HTTP/1.x by multiplexing requests over a single TCP connection, compressing headers, and allowing servers to push responses. It leads to more efficient use of network resources and faster page loads. While browser support is good, server implementations are still maturing and need to fully support HTTP/2 features like streams, dependencies, and server push to provide optimizations. Efficient TLS is also important to avoid delays in taking advantage of HTTP/2 performance benefits.

This document summarizes the status of HTTP implementations in 2008. It finds that while HTTP is widely implemented, many features are only partially or not supported across clients, servers, intermediaries and caches. It encourages continued standardization work to clarify HTTP specifications and improve interoperability. It also identifies several areas for potential HTTP extensions, such as PATCH, Prefer and Link headers, to better address the needs of modern web applications and services.

This presentation provides an introduction to RESTful service design patterns by starting at the HTTP basics, then looking at good designs and finally covering good and bad practices.

The document discusses techniques for improving web performance, including reducing time to first byte, using content delivery networks and HTTP compression, caching resources, keeping connections alive and reducing request sizes. It also covers optimizing images, loading JavaScript asynchronously to avoid blocking, and prefetching content. The overall goal is to reduce page load times and improve user experience.

Periodic refresh and multi-stage download are design patterns for updating content. Periodic refresh checks the server at regular intervals for new information and notifies users. Multi-stage download loads basic functionality initially and additional components in the background over time to improve the user experience for both fast and slow connections. Examples include ESPN scoreboards, Gmail notifications, and Microsoft Start.com.

AJAX is a new approach to web application development that uses asynchronous JavaScript and XML to transmit small amounts of data in the background without interfering with the display and behavior of the existing page. Some key aspects of AJAX include asynchronous data retrieval using XMLHttpRequest, data interchange formats like XML/JSON, dynamic display using the DOM, and JavaScript binding it all together for a more responsive user experience compared to traditional full page loads. Common AJAX design patterns address issues like predictive fetching of likely next data, throttling frequent submissions, periodic refreshing of data, and multi-stage downloading of pages and components.

Gamers are vocal about their displeasure when games are slow to download. Worse yet, if a game is unavailable due to too much traffic or a DDoS attack, gamers are, rightly so, incensed. And, if you have customers in China, Japan, Korea or Russia, performance can suffer due to distance induced latency. Find out how to protect your applications while ensuring fast downloads with dynamic web acceleration and DDoS mitigation. A dynamic content acceleration network not only ensures fast application downloads, but also accommodates peaks in traffic during a game launch. DDoS mitigation offloads attacks to special sponge PoPs, so your customers are not affected. Takeaway In this session you will learn how to speed up and secure your gaming application throughout the world, including in China, Japan, Korea and Russia. Your gamers will thank you.

This document compares the performance of normal web page loads to loads that utilize a service worker. It shows that service workers can improve performance by caching resources so that repeat visits are much faster, with the DOM content loading in under 200ms and transferring 0KB of data compared to over 2 seconds and transferring 3KB without a service worker. Resources for learning more about service workers and examples of sites that use them are also provided.

AJAX allows web pages to be updated asynchronously by exchanging data with a web server behind the scenes, allowing parts of a page to change without reloading the entire page. Tuenti uses AJAX extensively to update parts of their single-page application, caching content on both client and server sides for scalability. They route requests to different server farms based on client location and cache content to improve performance. Tuenti serves billions of images per day using multiple CDNs and pre-fetches content to minimize load times.

The document discusses computer networks and the internet. It covers topics like how the internet works by explaining URLs, DNS, HTTP requests and responses, and how web pages are delivered. It also discusses creating basic web pages using HTML tags, hosting web pages freely or renting server space, and how responses need not be HTML but can include different file types and structured data. Security topics like authorization, authentication, and restricting access are also briefly covered. The document suggests it will discuss either "The Internet" or "The Network" and poses questions to help explain networks and how multiple devices connect and communicate over a shared medium.

Varnish Cache is a web application accelerator that can speed up websites. It works by caching content and serving it to subsequent requests, reducing load on backend servers. The document outlines 9 steps to implement Varnish Cache, starting with easy steps like caching static assets and compression, then progressing to more complex techniques like caching semi-static content, graceful degradation, and advanced invalidation methods using custom headers. Implementing the initial steps provides minor speed improvements, while fully utilizing Varnish Cache through techniques like content composition and invalidation can yield high performance gains.

It's easy to improve the speed of your Joomla website. Just follow the tips & tricks of this presentation about Site Performance Optimization. These are the slides used during the Joomla World Conference 2013 in Boston #jwc13

Presentation given in WP Meetup in October 2019. Includes fresh new tips from summer/fall 2019! A Must read for all WordPress site owners and developers.

How does SEO change on large websites? How do you work with mountains of data? How do you find problems when crawling is hard?

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.

The document provides techniques and tools for improving web performance. It discusses how reducing response times can directly impact revenues and user experience. It then covers various ways to optimize the frontend, including reducing time to first byte through DNS optimization and caching, using content delivery networks, HTTP compression, keeping connections alive, parallel downloads, and prefetching. It also discusses optimizing images, JavaScript loading, and introducing new formats like WebP. The overall document aims to educate on measuring and enhancing web performance.

JavaScript news in December 2017 edition: + Kill Internet Explorer + Google Chrome 63 Released + How to Cancel Your Promise + Parcel + Turbo + Average Page Load Times for 2018 + Vulnerable JavaScript Libraries + New theming API in Firefox + Bower is dead + Extension Tree Style Tab: Reborn + React v16.2.0 + WebStorm 2017.3.1 + The Best JavaScript and CSS Libraries for 2017

Floyd Smith and the team from NGINX presented at the Wordpress San Francisco MeetUp group in June 2016. In this presentation, he illustrated how NGINX can vastly improve your Wordpress hosting performance.

My talking points for the presentation on optimization of modern web applications. It is a huge topic, and I concentrated mostly on technical aspects of it.

Learning Objectives: • Learn how to use CloudFront dynamic delivery features • See a live demo and learn how to take advantage of Cloud Front newest features Traditionally, content delivery networks (CDNs) were designed to accelerate static content. Amazon CloudFront supports delivery of an entire website, including dynamic, static, streaming and interactive content using a global network of edge locations. CloudFront integrates with other AWS services that are built to scale massively. Together, the solution can automatically scale to millions of users by leveraging the global reach of CloudFront and the auto scaling capability of AWS platform. In this talk, we introduce you to various design patterns and best practices to build a massively scalable solution using CloudFront. We discuss how this scale can be achieved without compromising on availability, security or cost.

This document discusses web application architecture and frameworks. It argues that frameworks should not dictate project structure, and that the code should separate domain logic from infrastructure logic. This allows focusing on the core problem domain without concerning itself with technical details like databases or web requests. It also advocates splitting code into ports that define intentions like persistence, and adapters that provide framework-specific implementations, allowing for independence of the domain logic from any particular framework or technology. This architecture, known as hexagonal or ports and adapters, facilitates testing, replacement of parts, and future-proofing of the application.

Optimizing a WordPress site can improve page speed and user experience. A speed test identifies issues like large images, unnecessary JavaScript, and third-party plugins as potential problems. Solutions include image optimization and sprites, JavaScript consolidation and proper placement, code compression, caching, and reducing third-party assets. With these optimizations, a site can improve its speed grade from a D to an A.

Pragathi Technical Session 'Web Performance Optimization' By, Athira Vinod Pragathi - Tech & Socio Cultural Activity Group Livares Technologies #livares #pragathi #technicalsession #technology #technicaldiscussion #WebPerformanceOptimization

This document provides an introduction to web application development, including the history of the World Wide Web and how it works. It describes the basics of web clients and servers, URLs, HTML, and how communication is established over the internet. It then distinguishes between static and dynamic web pages, and discusses client-side scripting like JavaScript and Java applets as well as server-side scripting using languages like PHP, ASP, and JSP to generate dynamic web content. Finally, it lists some common web development tools.

Have you ever thought about how your site’s performance compares to the web as a whole? Or maybe you’re curious how popular a particular web feature is. How much is too much JavaScript? The HTTP Archive has been keeping track of how the web is built since 2010. It enables you to find answers to questions about the state of the web past and present. Paul Calvano explores how the HTTP Archive works, how people are using this dataset, and some ways that Akamai has leveraged data within the HTTP Archive to help its customers.

MongoDB Evenings Houston March 22, 2016 at The Iron Yard Implementing EDW Using MongoDB Purvesh Patel, Chief Technology Officer, Cardtronics

Lets look at an example of what a performant website can look like. This discuss what concepts should we be considering when looking at website performance. Next we will go over two areas pertaining to website performance: 1) website performance tweaks that you as a web developer can directly make 2) website performance tweaks that you may have to work with your hosting provider or IT department to achieve

Mail is received as a commodity from the cloud, also Collaboration. However, in many client meetings we often hear the question, where are we heading with the hundreds of Notes applications? Which strategy is most effective and cost efficient at the same time? Is cloud a practical answer? With sound and proven methodology Notes applications can be transformed into valuable web applications in the cloud. It turns out that today the time has come for cloud platforms. A side view of large customer projects, already transforming their Notes applications to the cloud - for example to IBM SoftLayer - is helpful. This Track helps you understand that strategies that are implemented and lets you understand the costs and risks involved.

Web performance has been one of the most talked about web development topics in the recent years. Yet if you try to start your journey with the speed optimisations, you might find yourself in a pickle. With the tooling, you might feel overwhelmed—it looks complex and hard to comprehend. With the metrics: at first glance all of them seem similar, not to mention that they change over time and you cannot figure out which of them to take into account.