User_meta vs User_attributes

User Meta As you read in our what we look for documentation, we don’t allow the use of user_meta. The reason for this is that WordPress.com […]

Batcache

WordPress.com uses Batcache to store and serve cached versions of rendered pages. Batcache uses memcached as its storage and is aimed at preventing a flood […]

Uncached Functions

WordPress core has a number of functions that, for various reasons, are uncached, which means that calling them will always result in an SQL query. […]

Database Queries

As mentioned in the Best Practices Introduction, you should try and avoid direct database queries wherever possible and rely on WordPress API functions for fetching and […]

Caching

Site speed is essential to a great web experience. WordPress.com employs multiple levels of caching automatically. Full page cache: using the Batcache plugin, this caches […]