Question from the Symfony 3 test

The 2 cache approaches “Caching” and “Simple Caching” of the component implement the same PSR: PSR-6.

The component contains 2 classes for interoperability (bidirectional) between the “Caching” and “Simple Caching” caches: SimpleCacheAdapter and Psr6Cache

The “Simple Caching” allows to cache simple scalar variables only.

The “Caching” allows to manage pools of items.

The “Simple Caching” allows an invalidation of items via a tag system grouping data dependencies.