# phpman > man > Cache::Memory(3pm)

## NAME
    [Cache::Memory](https://www.chedong.com/phpMan.php/perldoc/Cache%3A%3AMemory/markdown) - Memory based implementation of the Cache interface

## SYNOPSIS
      use [Cache::Memory](https://www.chedong.com/phpMan.php/perldoc/Cache%3A%3AMemory/markdown);

      my $cache = [Cache::Memory](https://www.chedong.com/phpMan.php/perldoc/Cache%3A%3AMemory/markdown)->new( namespace => 'MyNamespace',
                                      default_expires => '600 sec' );

    See Cache for the usage synopsis.

## DESCRIPTION
    The [Cache::Memory](https://www.chedong.com/phpMan.php/perldoc/Cache%3A%3AMemory/markdown) class implements the Cache interface. This cache stores data on a per-process
    basis. This is the fastest of the cache implementations, but is memory intensive and data can
    not be shared between processes. It also does not persist after the process dies. However data
    will remain in the cache until cleared or it expires. The data will be shared between instances
    of the cache object, a cache object going out of scope will not destroy the data.

## CONSTRUCTOR
      my $cache = [Cache::Memory](https://www.chedong.com/phpMan.php/perldoc/Cache%3A%3AMemory/markdown)->new( %options )

    The constructor takes cache properties as named arguments, for example:

      my $cache = [Cache::Memory](https://www.chedong.com/phpMan.php/perldoc/Cache%3A%3AMemory/markdown)->new( namespace => 'MyNamespace',
                                      default_expires => '600 sec' );

    See 'PROPERTIES' below and in the Cache documentation for a list of all available properties
    that can be set.

## METHODS
    See 'Cache' for the API documentation.

## PROPERTIES
    [Cache::Memory](https://www.chedong.com/phpMan.php/perldoc/Cache%3A%3AMemory/markdown) adds the property 'namespace', which allows you to specify a different caching
    store area to use from the default. All methods will work ONLY on the namespace specified.

     my $ns = $c->namespace();
     $c->set_namespace( $namespace );

    For additional properties, see the 'Cache' documentation.

## SEE ALSO
    Cache

## AUTHOR
     Chris Leishman <<chris@leishman.org>>
     Based on work by DeWitt Clinton <<dewitt@unto.net>>

## COPYRIGHT
     Copyright (C) 2003-2006 Chris Leishman.  All Rights Reserved.

    This module is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, either expressed
    or implied. This program is free software; you can redistribute or modify it under the same
    terms as Perl itself.

    $Id: Memory.pm,v 1.9 2006/01/31 15:23:58 caleishm Exp $