Web Application Performance Audit and Optimization
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The document outlines the importance of web application performance optimization, highlighting user expectations for fast loading times and the potential impact on user retention. It discusses various aspects of performance, auditing techniques, and factors affecting performance, including server configuration and frontend/backend considerations. Additionally, it provides insights into performance testing tools and the contributions of Zyxware Technologies to Drupal and free software initiatives.
Web Application Performance Audit and Optimization
- 1. Web Application Performance Audit and Optimization Anoop John, Founder & CTO
- 2. Web Application Performance Optimization What is performance? How fast a site loads on a users device How fast a site loads on different devices How well the server responds to increase in traffic
- 3. Web Application Performance Optimization Why is Performance Important? 47% of users expect a page to load in 2s or less 40% of users will leave a page if it takes more than 3s to load 46% will not return to a poorly performing site 14% will start shopping at a different site if page load feels slow 64% of shoppers will never return to a slow loading online shop Ref: Seomoz.com, Akamai.com
- 4. Web Application Performance Optimization Aspects of Performance Page load time Page render time Time to start interaction Maximum number of simultaneous users on site Maximum number of logged in users on site
- 5. Web Application Performance Optimization Auditing Performance Document baseline performance Identify traffic patterns Evaluate website build Identify bottlenecks in the backend Identify bottlenecks in the frontend Evaluate hardware platform Identify limitations at the server level Evaluate server application configuration Identify sub-optimal configurations
- 6. Web Application Performance Optimization Factors Affecting Performance Server configuration - hardware specs Server applications - apache, database, caching Website backend - how the site has been built, logic, database, integrations Website frontend - internal resources, external resources, content to be loaded / rendered, complexity of HTML, JS, CSS Caching layers - varnish, CDN, browser cache
- 7. Web Application Performance Optimization Server Configuration Shared? VPS? Dedicated? Processor - speed? cores? dedicated? virtual? Memory - total memory available? shared? free memory? Hard disk - speed of i/o? SSD?
- 8. Web Application Performance Optimization Server Applications Apache - threading model - MPM, Prefork, CGI, FCGI, maximum number of requests, number of children, connection time out, modules Nginx MySQL - query caching, indexes, tmp table, open tables, heap size PHP - extensions
- 9. Web Application Performance Optimization Backend Caching - page caching, caching in custom code Memcache, APC Custom code - size? unused? admin? Custom code - reviewed? SQL queries - slow queries? query log? Indexing? SQL inserts - too many? logging? Disk writes - too many? Synchronous requests?
- 10. Web Application Performance Optimization Frontend Loading time Rendering time Complexity of HTML Complexity and size of CSS Complexity and size of JS Number and size of static resources Size of images, PNG / JPG Number of external resources Synchronous external resources
- 11. Web Application Performance Optimization Caching Layers Browser cache - enabled? expiry? Static caching - varnish? Static resource caching - CDN? subdomains?
- 12. Web Application Performance Optimization Optimizing Performance Quantify bottlenecks - impact? cost? time? Classify bottlenecks - critical, high, normal, low Group solutions Iterate over groups - implement and test Document results Monitor and re-evaluate 80:20 rule
- 13. Web Application Performance Optimization Testing Performance New Relic monitoring Apache ab testing Apache JMeter load testing
- 14. Web Application Performance Optimization Performance Tools MySQL query logs EXPLAIN Profiling and tracing using xdebug http://webpagetest.org/ Yahoo YSlow, Google Page Speed Firebug
- 15. Web Application Performance Optimization Zyxware Technologies and Drupal Zyxware is a leading contributor to Drupal from India and is one of Service Providers from India listed on drupal.org ● Over 50,000 websites use our modules and themes ● More than 35 contributed modules and themes ● Maintainer of Search404, a top 200 Drupal module ● Over 1000 commits at drupal.org ● Contributes all patches back to Drupal ● Our profile on drupal.org - http://drupal.org/user/222163 ● Knowledge partnerships with Acquia, New Relic and Volacci
- 16. Web Application Performance Optimization ● Freedom Walk, a 44 day walk by a team of Free Software Evangelists across the length of Kerala to promote Free Software ● Building RithuOS, an Operating System for Engineering students with Free Software Engineering applications ● GNU/Linux Install Fests in Schools, Colleges and at Technopark. ● Local language (Malayalam) computing camps in colleges ● Building and Maintenance of Freedom Toaster, a Free Software kiosk ● Conducting Free Software workshops and lectures in colleges in Kerala Free Software and Zyxware Technologies
- 17. Web Application Performance Optimization • Check us out at http://www.zyxware.com • Mail us at [email protected] • Like us at http://www.facebook.com/zyxware • Follow us at http://www.twitter.com/zyxware • Connect with us at http://www.linkedin.com/companies/zyxware-technologies • Talk to us at +91-9495969446 between 9AM - 9PM IST • Skype me at aj_zyxware Contact Us
- 18. Web Application Performance Optimization • https://blog.radware.com/applicationdelivery/applicationaccel erationoptimization/2014/01/55-web-performance-stats-youll- want-to-know/ • http://www.slideshare.net/fabianlange/full-stack-web- application-performance-tuning-presentation/23 • http://www.slideshare.net/takinbo/web-application- optimization-techniques • http://www.slideshare.net/bonoseo/web-performance- optimization-wpo/17- Performance_Test_Toolsbr_Loadsinwwwloadsinbr_Slow • http://www.slideshare.net/CodeFireTech/web-application- performance References
- 19. Web Application Performance Optimization Thank you