Cache

Cache is a class found under Phalcon\Cache directory. It helps in accessing frequently used data at much faster rate. Phalcon\Cache is written in C Programming language and reduce overhead.

When to implement Cache?

1. When we are frequently using complex calculations that returns the same result.
2. When we are using many helpers and the output generated is always the same.
3. When we are accessing database data constantly and its data rarely changes.

Caching process is divided into 2 parts:

1) Frontend: Frontend checks whether a key has expired or not. Also perform additional transformations to the data before storing and after retrieving them from the backend.

2) Backend: Backend part is responsible for communicating, reading or writing the data required by the frontend.

Implementation

Below code provide basic caching process for 2 days cache by implementing frontend and backend adapters.

Frontend Adapters

Backend Adapters