Apache::Cache 0.05

Apache::Cache is a cache data accessible between Apache childrens. SYNOPSIS use Apache::Cache qw(:status); my $cache = new Apache::Cache(default_expires_in=>"5 minutes"); # if the if the next line is called within 10 minutes, then this # will return the cache value overwise, this will return undef and the # status method will be equal to the constant EXPIRED (exported by Apache::Cache # on demande via the :status tag) # the next line try to get the data from the cache, if the data is stored in # in the cache and if it not expired, then this return the data. Otherwise # if data have never been store in the cache, or if its expired, this will # return undef and the status() method will be equal to constant EXPIRED (exported # by Apache::Cache on demand, via the :status tag) my $value = $cache->get(Key); if($cache->status eq EXPIRED) { # cant get the data from the cache, we will need to get it by the normal way # (via database, from file...) $value = get_my_data(Key); # here, the get_my_data() function is a function of your # programe that generate a fresh value # this data have to expires in 30 secondes my $expires_in = 30 secondes; $cache->set(Key => $value, $expires_in); } elsif($cache->status eq FAILURE) { # dont use cache, cache maybe busy by another child or something goes wrong $value = get_my_data(Key); } This module allows you to cache data easily through shared memory. Whithin the framework of an apache/mod_perl use, this cache is accessible from any child process. The data validity is managed in the Cache::Cache model, but as well based on time than on size or number of keys. Additionnally, you can implement a cache with Apache::Cache in your module without the risk of namespace clash because Apache::Cache is enclosed in the constructors packages caller (see Apache::SharedMem for more details)..

Requirements:	No special requirements
Platforms:	Linux
Keyword:	Accessible,  Apachecache,  Cache,  Data,  Expired,  Libraries,  Programming,  Status,  Value
Users rating:	0/10