1. Improving Drupal
performance
www.hr-portal.ru

2. Gold Sponsor of
DrupalCamp Kyiv 2011

3. Silver Sponsors of
DrupalCamp Kyiv 2011

4. Main performance issues
• Tables locking (MyISAM)
• Many queries
• A lot of join queries
• Cache in DB
• A lot of queries for anonymous users
• No need for refresh cache for anonymous frequently
• Slow statics
• Slow clients

5. InnoDB features
• No table locking
• Auto optimization inside of
innodb_pool_buffer_size size

6. Other MySQL options
• Tmp_table_size = 512 Mb
• Query_cache_size
• Max_connections
• join_buffer_size?
• thread_concurrency?
• mysqltuner

7. Nginx – cache for anonymous users
proxy_cache_path /var/nginx/cache levels=1:2 keys_zone=hrportal:10m inactive=10m;
proxy_cache hrportal;
proxy_cache_key $host$uri?$args;
proxy_no_cache $cookie_logged;
proxy_cache_bypass $cookie_logged;
proxy_cache_use_stale error timeout invalid_header updating http_500 http_502
http_503 http_504;
proxy_pass_header Set-Cookie;
proxy_ignore_headers "Expires" "Cache-Control";
#proxy_ignore_headers "Expires";
proxy_cache_valid 200 301 302 304 1h;

8. Other nginx features
• Fast static
• Proxy for slow clients
• Anti – DDoS
• Gzip
• No keep-alive with backend 
• Static cache for remote backends 

9. Site speed & traffic

10. Loadimpact

11. Future optimization
• ESI
• MongoDB

12. Вопросы к докладчику
Pankov Artem
artem@pankov.biz
+7 903 726 19 69