21.9.7.1. Key Features

Transparent and therefore easy to use
- supports all PHP MySQL extensions
- no API changes
- very little application changes required
Flexible invalidation strategy
- Time-to-Live (TTL)
- user-defined
Storage with different scope and life-span
- Default (Hash, process memory)
- APC
- MEMCACHE
- sqlite
- user-defined
Built-in slam defense to prevent cache stampeding.