Improve Performance of a Drupal Site (In the increasing order of complexity)
- Keep the core updated, contrib module and themes updated. Yes it matters.
- Install APC on your server. (Moved to top based on suggestion from Letharion)
- Page Caching : admin/config/development/performance Difference between Minimum cache lifetime and Expiration of cached pages
- Block Caching https://drupal.org/project/blockcache_alter Caching options for all the blocks.
- Disable Unnecessary modules. Every module adds to the amount of code that needs to be available for a page load. And it also increases the number of lookups. Wherver possible use a generic module in place of multiple module that does specific functionalities.
- Cache Views content - Content aware caching for Views https://www.drupal.org/project/views_content_cache
- Disable DB logging - Use https://drupal.org/project/syslog_ng
- Reduce 404 Errors - http://www.brokenlinkcheck.com/
- Fast 404 Responses - https://drupal.org/project/fast_404 - Try handling at server level.
- Client Side Validations - https://www.drupal.org/project/clientside_validation
- Compress Image - https://www.drupal.org/project/imageapi_optimize
- Lazy Loading of Images - Don’t load unnecessary images - https://www.drupal.org/project/lazyloader
- Use Sprite Sheets - https://www.drupal.org/project/spritesheets
- Set Minimum Cache Life Time Value to a higher number and use cache clearing modules to clear the caches for specific pages - Whenever I edit/update a node all the page caches for anonymous user are lost
- Use Devel Module to watch queries.
- Rewrite Views Queries / avoid Views if its a overkill.
- XHProf - https://www.drupal.org/project/XHProf
- FPM, HHVM.
- DB Profiling and Tuning - https://www.drupal.org/project/dbtuner
- Use Boost, don't Bootstrap DB if not required. https://drupal.org/project/boost For most of the small to medium sites Boost is good enough and you may not need Reverse Proxies or so.
- Use CDNs - https://www.drupal.org/project/cdn Its easy to set up.
- If your cache tables are huge use Memcached - If you can install memcached and set up RAM for it, it is not as complex as it sounds.
- Use Reverse Proxy Server - Varnish(at-least for assets). Helps a lot if most of your users are anonymous.
- Compressed transfer - Enable gzip compression
- Keep Alive - Use Persistent Connections where possible.
- Progressive JPEGS -
- CACHING IN CODE - Eaton’s blog is awesome. http://www.lullabot.com/blog/article/beginners-guide-caching-data-drupal-7
- Implement Cache Warming - https://www.drupal.org/project/cache_warmer - Cache Warm the pages before the end user hits them.
- Master Slave DB Config - https://www.drupal.org/project/autoslave makes it easier for you to set up one.
- Database Clusters - http://stackoverflow.com/questions/1163216/database-cluster-and-load-balancing
- Load Balancers -http://en.wikipedia.org/wiki/Load_balancing_(computing)
- Use heuristic Cache Warming - https://www.drupal.org/project/cache_graceful
- Authenticated User Caching - https://www.drupal.org/project/authcache
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Submitted by Satheesh (not verified) on Thu, 10/25/2018 - 05:50
1) Keep core updated & contrib modules & theme updated
2) Page Caching
3) Disable Unnecessary modules
4) Cache views content
5) Disable DB logging
6) Compress image size & Compressed transfer - enable gzip compression
7) Use Devel module to watch queries
8) Use Boost module for small and medium sites
9) Use CDNs
10) Use Reverse Proxy server - like Varnish
Cache Performance - Basic methods
Submitted by TS (not verified) on Thu, 10/25/2018 - 05:52