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https://github.com/tedious/Stash

The place to keep your cache.
https://github.com/tedious/Stash

caching php

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The place to keep your cache.

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README 

        
# Stash - A PHP Caching Library



[![License](http://img.shields.io/packagist/l/tedivm/stash.svg)](https://github.com/tedious/Stash/blob/master/LICENSE)

[![Latest Stable Version](http://img.shields.io/github/release/tedious/stash.svg)](https://packagist.org/packages/tedivm/stash)

[![Total Downloads](http://img.shields.io/packagist/dt/tedivm/stash.svg)](https://packagist.org/packages/tedivm/stash)



Stash makes it easy to speed up your code by caching the results of expensive

functions or code. Certain actions, like database queries or calls to external

APIs, take a lot of time to run but tend to have the same results over short

periods of time. This makes it much more efficient to store the results and call

them back up later.



## Installing



Installing Stash can be done through a variety of methods, although Composer is

recommended.



### Composer



Until Stash reaches a stable API with version 1.0 it is recommended that you

review changes before Minor updates, although bug fixes will always be

backwards compatible.



```js

"require": {

  "tedivm/stash": "0.17.*"

}

```



or by using the `composer require` command:



```

composer require tedivm/stash

```



### Github



Releases of Stash are available on [Github](https://github.com/tedious/Stash/releases).



## Documentation



Although this README contains some useful data there is a lot more information

at the main site, [stashphp.com](http://www.stashphp.com/).



## Core Concepts



### Main Classes



Stash has three main components: a `Pool` class that represents a specific

grouping of cached objects, an `Item` class that provides access to individual

objects, and a series of `Driver` classes that allow Stash to interact with

caching systems.



Each `Driver` is initialized and then passed into a `Pool`, at which point the

developer can simply forget about it. Developers also have the option of using

multiple Drivers together by joining them with the Composite Driver.



The `Pool` class allows developers to perform a number of tasks. There are a few

maintenance related tasks, such as running a "Purge" to allow backend systems to

perform maintenance tasks or set new logging or driver classes. The `Pool` also

can be used to create `Item` objects, singly or in groups.



Each `Item` represents a single object inside the cache. It has a unique Key,

meaning that any two Items created from the same `Pool` will contain the same

Value. An `Item` can set, get and remove a value from a caching system.



### Keys



A Key is a string that represents an Item in a caching system. At its simplest,

a key is an alphanumeric string and has a one to one relationship with a value

in the cache.



Stash provides a feature known as "stacks" that allows developers to group

related Items together so they can be erased as a group. This is done by giving

Items a nested structure, similar to folders on a computer. Just like with

folders, this is represented by adding slashes to the name representing the file

or cached object.



For example, a Key like "/models/users/34/profile" can allow developers to clear

the data for specific users using that user's id, or clear the data for all

users or even all models. It can also allow that developer to break up data into

specific pieces to only load what is needed.



### Session Storage



The provided Session class takes a Pool in its constructor and can then be

registered as a Session Handler using the built-in PHP methods, the

Session::registerHandler static function, or by using any framework that uses

the SessionHandlerInterface interface.



## Drivers



Stash currently supports the following backends:



* FileSystem

* Sqlite

* APC

* Memcached

* Redis

* Ephemeral (runtime only)



Stash also supports a specialized "Composite" Driver which can contain any

number of the above drivers. This allows developers to created multi-tiered

drivers that use a variety of back ends.



## Symfony Integration



The [Stash Bundle](https://github.com/tedious/TedivmStashBundle) makes using

Stash inside of Symfony projects significantly easier. This bundle exposes

Stash as a Service for developers to use, and allows Symfony to use Stash

as a session handler.



## License



Stash is licensed under the BSD License. See the LICENSE file for details.



## Reporting Security and Vulnerability Issues



This project utilizes the [Tidelift Security Reporting System](https://tidelift.com/security) for security and vulnerability reporting. 



## Support



Issues can be opened directly in Github for issues that aren't related to security.



[Professionally supported Stash is now available with Tidelift.](https://tidelift.com/subscription/pkg/packagist-tedivm-stash?utm_source=packagist-tedivm-stash&utm_medium=referral&utm_campaign=readme)