Drupal Performance
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This document discusses various techniques for improving Drupal performance and scaling. It covers optimizing hardware resources like RAM and PHP opcode caches. Front-end optimizations include JavaScript and CSS aggregation, caching, and compression. Database engines and using a content delivery network can help. The Pressflow distribution of Drupal is optimized for performance. Monitoring and measuring performance is also important.
Drupal Performance
- 1. Drupal and Performance Kornel Lugosi (@Coornail) Pronovix November 5, 2010
- 2. Performance / Scaling Performance != Scaling
- 3. Backend
- 4. Know your parts Linux Apache (/nginx/Lighttpd) Mysql (/postgreSQL/sqlite) PHP
- 7. Reverse proxy for anonymous users Varnish Nginx
- 8. Varnish
- 10. PHP Opcode caches: APC XCache Zend Optimizer
- 11. Opcode caches
- 13. Measure
- 15. Jmeter
- 16. Monitor
- 18. Front-end
- 19. HTTP requests JavaScript aggregation CSS aggregation mod expires
- 20. Parralelize downloads Use content delivery network: Parralel module CDN module SimpleCDN module
- 22. mod deflate
- 23. Utilize cache mod expires
- 24. Keep it minimal Reduce DOM elements Reduce DNS lookups
- 25. Images Letting them 404 is very expensive in Drupal 6! optipng jpegtrans
- 26. Drupal-related
- 27. Anonymous vs Logged in
- 28. Database engines
- 29. Pressflow Drupal fork Optimized for performance Only supports mysql Supports reverse proxies(!) Database replication
- 30. Pressflow
- 31. Pressflow and Varnish at CEU
- 32. Performance related modules memcached cache router boost