Surviving Slashdot
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Technical presentation from 2005 about how to make your web site survive slashdot/digg style mega load.
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The need to scale is in high demand in an age where everything is moving to the cloud. Though the standard Apache configuration could handle a website with moderate traffic, the minute it gets slash dotted or twitted multiple times could spell an embarrassing crash landing! If you are the administrator of such a website then good luck finding another job! On the other hand you value high availability in the midst of popularity then read on. On this one day workshop, we will show you how to scale your website and webapps to scale to handle thousands of simultaneous sessions the right way. The topics covered will include:
- Setting up Apache and NGiNXM
- Setting up a sample LAMP web app
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- Fine tuning Apache to improve performance
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23 Ways To Speed Up WordPress
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WordPress Speed & Performance from Pagely's CTO
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Performance Tuning Web Apps - The Need For Speed
This document discusses the importance of web page speed and provides tips to optimize performance. It emphasizes that speed is important for user experience and engagement. Slow pages can lead to high bounce rates and negatively impact SEO. It then provides the "golden rules" of optimization, which include reducing HTTP requests, minimizing file sizes, caching assets, and using techniques like lazy loading. Specific tools are recommended for measuring performance, including PageSpeed, Speed Tracer, and Dynatrace Ajax. Browser limitations and upcoming technologies that may improve speed are also briefly covered. The goal is to make the web faster by optimizing code, images, assets and more.
Tips for a Faster Website
The document provides tips for optimizing various aspects of a website including the front end, application and database, web server, and miscellaneous topics. It recommends techniques such as minimizing HTTP requests, leveraging caching, optimizing databases and queries, offloading processing, and load balancing between web servers to improve page loading speeds and site performance. The overall goal is to analyze bottlenecks and apply solutions such as file compression, caching, and leveraging CDNs or reverse proxies to make websites faster and more scalable.
HTTP Plugin for MySQL!
The document discusses the introduction of an HTTP plugin for MySQL. Key points:
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Site Performance - From Pinto to Ferrari
This document discusses ways to improve website performance from slow "Pinto" levels to faster "Ferrari" levels. It recommends using an opcode cache like APC to speed up PHP, optimizing databases with technologies like Memcached, using caching plugins in WordPress, and considering architectures with load balancing and replication. The goal is to identify bottlenecks and apply techniques that reduce page load times through an understanding of how websites and underlying technologies work.
2013 - Dustin whittle - Escalando PHP en la vida real
This document discusses how to scale PHP applications to meet high demand. It begins by noting that large companies like Facebook and Wikipedia use PHP. It then outlines several techniques for scaling PHP, including: using opcode caches to improve performance; storing sessions in a database rather than disk; leveraging in-memory data caches like Memcached and Redis; doing blocking work in background tasks via queues; and utilizing HTTP caching with a reverse proxy cache. The document emphasizes that performance is important for user experience and business results, and that these techniques can help PHP applications handle high traffic loads.
Lamp Stack Optimization
Mike Creuzer's presentation on LAMP optimization for the October, 2009 meeting of the Suburban Chicago PHP & Web Development Meetup
Matt Gauger - Lamp vs. the world - MKE PHP Users Group - December 14, 2010
This document summarizes a talk comparing PHP and Rails web development frameworks. It discusses the evolution of web servers from Apache to more scalable options like Nginx. Nginx acts as a reverse proxy, passing requests to application servers like FastCGI that execute code and return responses. This represents a shift from simply serving static files to building full-featured web applications using the MVC pattern. Node.js is presented as the next step, allowing JavaScript to be used for server-side development in an event-driven, non-blocking way.
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Northeast PHP - High Performance PHP
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HTTP cache @ PUG Rome 03-29-2011
HTTP caching involves storing copies of resources near clients to serve future requests faster. Caching can happen locally on a client or through shared proxies. Effective caching requires expiration dates, validation of cached responses, and invalidation of cached responses when content changes. Caching allows servers to scale to many users by offloading work to clients and proxies. The HTTP protocol and technologies like ESI were designed to support caching while handling dynamic content.
Lamp
The document provides an overview of the LAMP web development stack, which consists of Linux as the operating system, Apache as the web server, MySQL as the database management system, and PHP as the programming language. It discusses each component, their history, features, and how they work together to provide a free and open-source alternative to proprietary web development platforms.
AD113 Speed Up Your Applications w/ Nginx and PageSpeed
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
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This document discusses various audio engineering services including improving live recordings, editing audio, mixing, mastering, and converting formats like vinyl to digital. Services include removing noise, standardizing volume, improving stereo imaging, removing unwanted audio, improving ambience and acoustics. Custom services like creating CDs from recordings and setting up an online store are also mentioned. Contact information is provided at the end.
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Surviving Slashdot
- 1. Surviving Slashdot: How to plan for the deluge.
- 2. Magnatune’s architecture: linux/apache/mysql/php
- 3. What happened when Slashdot hit.
- 4. 1. Thousands of Apache processes
- 5. 2. Http Servers unresponsive
- 6. 3. Http Audio Streaming not fast enough for real time
- 8. Why is Yahoo so “snappy” ?
- 9. By default, Web browsers ask for every image on every page with “If-Modified-Since”.
- 10. Ironically, lots of small graphics on a web page is the least efficient use of HTTP.
- 11. What if you could make browsers not ask for images that are unchanging?
- 12. Trick #1: use “Expires” HTTP header on static graphics: Expires: Thu, 15 Apr 2010 20:00:00 GMT
- 13. I did this by hacking the C source code to my HTTP server.
- 14. Is there a fast Apache way to add an Expires: header when returning GIF/JPEGs?
- 15. next problem...
- 16. In many cases, HTTP performance is constrained by the receiver, not the sender.
- 17. Large files take a long time to be downloaded by the requestor.
- 18. Each download uses up an Apache process.
- 19. Apache Bench shows great large-file performance.
- 20. But Apache Bench isn’t a useful metric with large files in the real world.
- 21. The problem is the “fork” based architecture of Apache.
- 22. Thread-based HTTP servers have the same problem.
- 23. Apache has an experimental “async” mode -- this may be a solution in the future.
- 24. Trick #2: Use a dedicated async- based HTTP server for large files.
- 25. next problem...
- 26. PHP is handy. But PHP is slow.
- 27. Apache Bench Speed tests: PHP: 9 pages/sec HTML: 250 pages/sec
- 28. Trick #3: Statically cache most PHP pages into HTML.
- 29. Use Apache “MultiViews” option.
- 30. URLs shouldn’t include .php or .html
- 31. ie: http://x.com/mypage could be PHP or HTML, doesn’t matter.
- 32. Have a script regularly HTTP GET most PHP files, save as HTML and delete the PHP.
- 33. Yields a 25x speed increase.
- 34. end