NAME AnyEvent::Memcached - AnyEvent memcached client VERSION Version 0.02 NOTICE Interface is stabilized. Some features could be rewritten in future with minor changes. Documentation is incomplete yet, look at tests, examples, sources for now ;) SYNOPSIS use AnyEvent::Memcached; my $memd = AnyEvent::Memcached->new( servers => [ "10.0.0.15:11211", "10.0.0.15:11212" ], # same as in Cache::Memcached debug => 1, compress_threshold => 10000, namespace => 'my-namespace:', cv => $cv, # AnyEvent->condvar: group callback ); $memd->set_servers([ "10.0.0.15:11211", "10.0.0.15:11212" ]); # Basic methods are like in Cache::Memcached, but with additional cb => sub { ... }; # first argument to cb is return value, second is the error(s) $memd->set( key => $value, cb => sub { shift or warn "Set failed: @_" } ); $memd->get( 'key', cb => sub { my ($value,$err) = shift; $err and return warn "Get failed: @_"; warn "Value for key is $value"; } ); $memd->mget( [ 'key1', 'key2' ], cb => sub { my ($values,$err) = shift; $err and return warn "Get failed: @_"; warn "Value for key1 is $values->{key1} and value for key2 is $values->{key2}" } ); # Additionally there is rget (see memcachedb-1.2.1-beta) $memd->rget( 'fromkey', 'tokey', cb => sub { my ($value,$err) = shift; $err and warn "Get failed: @_"; } ); METHODS new %args Currently supported options: servers =item namespace =item debug =item cv =item compress_threshold =item compress_enable =item timeout =item noreply If true, additional connection will established for noreply commands. Beware, feature is under development and may be unstable set_servers Setup server list connect Establish connection to all servers and invoke event C, when ready set( $key, $value, [cv => $cv], [ expire => $expire ], cb => $cb->( $rc, $err ) ) Unconditionally sets a key to a given value in the memcache. $rc is '1' Successfully stored '0' Item was not stored undef Error happens, see $err add( $key, $value, [cv => $cv], [ expire => $expire ], cb => $cb->( $rc, $err ) ) Like "set", but only stores in memcache if the key doesn't already exist. replace( $key, $value, [cv => $cv], [ expire => $expire ], cb => $cb->( $rc, $err ) ) Like "set", but only stores in memcache if the key already exists. The opposite of add. append( $key, $value, [cv => $cv], [ expire => $expire ], cb => $cb->( $rc, $err ) ) Append the $value to the current value on the server under the $key. append command first appeared in memcached 1.2.4. prepend( $key, $value, [cv => $cv], [ expire => $expire ], cb => $cb->( $rc, $err ) ) Prepend the $value to the current value on the server under the $key. prepend command first appeared in memcached 1.2.4. get( $key, [cv => $cv], [ expire => $expire ], cb => $cb->( $rc, $err ) ) Retrieve the value for a $key. $key should be a scalar mget( $keys : ARRAYREF, [cv => $cv], [ expire => $expire ], cb => $cb->( $rc, $err ) ) NOT IMPLEMENTED YET Retrieve the values for a $keys. get_multi : Alias for mget. NOT IMPLEMENTED YET gets( $keys : ARRAYREF, [cv => $cv], [ expire => $expire ], cb => $cb->( $rc, $err ) ) Retrieve the value and its CAS for a $key. $key should be a scalar. NOT IMPLEMENTED YET delete( $key, [cv => $cv], [ noreply => 1 ], cb => $cb->( $rc, $err ) ) Delete $key and its value from the cache. If "noreply" is true, cb doesn't required del Alias for "delete" remove Alias for "delete" incr( $key, $increment, [cv => $cv], [ noreply => 1 ], cb => $cb->( $rc, $err ) ) Increment the value for the $key by $delta. Starting with memcached 1.3.3 $key should be set to a number or the command will fail. Note that the server doesn't check for overflow. If "noreply" is true, cb doesn't required, and if passed, simply called with rc = 1 Similar to DBI, zero is returned as "0E0", and evaluates to true in a boolean context. decr( $key, $decrement, [cv => $cv], [ noreply => 1 ], cb => $cb->( $rc, $err ) ) Opposite to "incr" rget( $from, $till, [ max => 100 ], [ '+left' => 1 ], [ '+right' => 1 ], [cv => $cv], cb => $cb->( $rc, $err ) ) Memcachedb 1.2.1-beta implements rget method, that allows to look through the whole storage $from the starting key $till finishing key +left If true, then starting key will be included in results. true by default +right If true, then finishing key will be included in results. true by default max Maximum number of results to fetch. 100 is the maximum and is the default destroy Shutdown object as much, as possible, incl cleaning of incapsulated objects BUGS Since there is developer release, there may be a lot of bugs Feature requests are welcome Bug reports are welcome AUTHOR Mons Anderson, "" COPYRIGHT & LICENSE Copyright 2009 Mons Anderson, all rights reserved. This program is free software; you can redistribute it and/or modify it under the same terms as Perl itself.