Library classes are loaded with the [loader](https://github.com/opencart/opencart/wiki/Engine#loader).
* [Cache](#cache)
* [Config](#config)
* [DB](#db)
* [Document](#document)
* [Encryption](#encryption)
* [Image](#image)
* [Language](#language)
* [Log](#log)
* [Mail](#mail)
* [Pagination](#pagination)
* [Request](#request)
* [Response](#response)
* [Session](#session)
* [Template](#template)
* [URL](#url)
## Cache
Caching of processed data.
* `__constuct(string $adaptor, [int $expire = 3600])`
* `get(string $key) : (mixed)` - Gets the cache data by key
* `set(string $key, mixed $value)` - Caches data using a key
* `delete(string $key)` - Deletes the cache by key
## Config
## DB
## Document
## Encryption
## Image
## Language
## Log
## Mail
## Pagination
## Request
## Response
## Session
## Template
## URL