dbi::util::cachememory(3) [osx man page]

DBI::Util::CacheMemory(3)				User Contributed Perl Documentation				 DBI::Util::CacheMemory(3)

NAME

       DBI::Util::CacheMemory - a very fast but very minimal subset of Cache::Memory

DESCRIPTION

       Like Cache::Memory (part of the Cache distribution) but doesn't support any fancy features.

       This module aims to be a very fast compatible strict sub-set for simple cases, such as basic client-side caching for DBD::Gofer.

       Like Cache::Memory, and other caches in the Cache and Cache::Cache distributions, the data will remain in the cache until cleared, it
       expires, or the process dies. The cache object simply going out of scope will not destroy the data.

METHODS WITH CHANGES

   new
       All options except "namespace" are ignored.

   set
       Doesn't support expiry.

   purge
       Same as clear() - deletes everything in the namespace.

METHODS WITHOUT CHANGES

       clear
       count
       exists
       remove

UNSUPPORTED METHODS

       If it's not listed above, it's not supported.

perl v5.16.2							    2007-11-26						 DBI::Util::CacheMemory(3)

Cache::SharedMemoryCache(3pm)				User Contributed Perl Documentation			     Cache::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@unto.net>

       Last author:	$Author: dclinton $

       Copyright (C) 2001-2003 DeWitt Clinton

perl v5.12.4							    2009-03-01					     Cache::SharedMemoryCache(3pm)