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Cache::SharedMemoryCacUserpContributed Perl DocumCache::SharedMemoryCache(3pm)

NAME
       Cache::SharedMemoryCache -- extends the MemoryCache.

DESCRIPTION
       The SharedMemoryCache extends the MemoryCache class and binds the data
       store to shared memory so that separate process can use the same cache.

       The official recommendation is now to use FileCache instead of
       SharedMemoryCache.  The reasons for this include:

       1) FileCache provides equal or better performance in all cases that
       we've been able to test.  This is due to all modern OS's ability to
       buffer and cache file system accesses very well.

       2) FileCache has no real limits on cached object size or the number of
       cached objects, whereas the SharedMemoryCache has limits, and rather
       low ones at that.

       3) FileCache works well on every OS, whereas the SharedMemoryCache
       works only on systems that support IPC::ShareLite.  And IPC::ShareLite
       is an impressive effort -- but think about how hard it is to get shared
       memory working properly on *one* system.  Now imagine writing a wrapper
       around shared memory for many operating systems.

SYNOPSIS
         use Cache::SharedMemoryCache;

         my %cache_options_= ( 'namespace' => 'MyNamespace',
                               'default_expires_in' => 600 );

         my $shared_memory_cache =
           new Cache::SharedMemoryCache( \%cache_options ) or
             croak( "Couldn't instantiate SharedMemoryCache" );

METHODS
       See Cache::Cache for the API documentation.

OPTIONS
       See Cache::Cache for the standard options.

PROPERTIES
       See Cache::Cache for the default properties.

SEE ALSO
       Cache::Cache, Cache::MemoryCache

AUTHOR
       Original author: DeWitt Clinton <dewitt AT unto.net>

       Last author:     $Author: dclinton $

       Copyright (C) 2001-2003 DeWitt Clinton

perl v5.20.2                      2014-09-17     Cache::SharedMemoryCache(3pm)