Cache::CacheMetaData - phpMan

Cache::CacheMetaData(3pm)      User Contributed Perl Documentation      Cache::CacheMetaData(3pm)

NAME
       Cache::CacheMetaData -- data about objects in the cache

DESCRIPTION
       The CacheMetaData object is used by size aware caches to keep track of the state of the
       cache and efficiently return information such as an objects size or an ordered list of
       identifiers to be removed when a cache size is being limited.  End users will not normally
       use CacheMetaData directly.

SYNOPSIS
        use Cache::CacheMetaData;

        my $cache_meta_data = new Cache::CacheMetaData( );

        foreach my $key ( $cache->get_keys( ) )
        {
           my $object = $cache->get_object( $key ) or
             next;

           $cache_meta_data->insert( $object );
         }

        my $current_size = $cache_meta_data->get_cache_size( );

        my @removal_list = $cache_meta_data->build_removal_list( );

METHODS
       new(  )
           Construct a new Cache::CacheMetaData object

       insert( $object )
           Inform the CacheMetaData about the object $object in the cache.

       remove( $key )
           Inform the CacheMetaData that the object specified by $key is no longer in the cache.

       build_removal_list( )
           Create a list of the keys in the cache, ordered as follows:

           1) objects that expire now

           2) objects expiring at a particular time, with ties broken by the time at which they
           were least recently accessed

           3) objects that never expire, sub ordered by the time at which they were least
           recently accessed

           NOTE: This could be improved further by taking the size into account on accessed_at
           ties.  However, this type of tie is unlikely in normal usage.

       build_object_size( $key )
           Return the size of an object specified by $key.

PROPERTIES
       get_cache_size
           The total size of the objects in the cache

SEE ALSO
       Cache::Cache, Cache::CacheSizer, Cache::SizeAwareCache

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

       Last author:     $Author: dclinton $

       Copyright (C) 2001-2003 DeWitt Clinton

perl v5.20.2                                2015-01-22                  Cache::CacheMetaData(3pm)

Generated by $Id: phpMan.php,v 4.55 2007/09/05 04:42:51 chedong Exp $ Author: Che Dong
On Apache
Under GNU General Public License
2025-01-15 06:02 @3.15.144.162 CrawledBy Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.com)