anyevent::redis(3pm) [debian man page]

AnyEvent::Redis(3pm)					User Contributed Perl Documentation				      AnyEvent::Redis(3pm)

NAME

       AnyEvent::Redis - Non-blocking Redis client

SYNOPSIS

	 use AnyEvent::Redis;

	 my $redis = AnyEvent::Redis->new(
	     host => '127.0.0.1',
	     port => 6379,
	     encoding => 'utf8',
	     on_error => sub { warn @_ },
	 );

	 # callback based
	 $redis->set( 'foo'=> 'bar', sub { warn "SET!" } );
	 $redis->get( 'foo', sub { my $value = shift } );

	 my ($key, $value) = ('list_key', 123);
	 $redis->lpush( $key, $value );
	 $redis->lpop( $key, sub { my $value = shift });

	 # condvar based
	 my $cv = $redis->lpop( $key );
	 $cv->cb(sub { my $value = $_[0]->recv });

DESCRIPTION

       AnyEvent::Redis is a non-blocking (event-driven) Redis client.

       This module is an AnyEvent user; you must install and use a supported event loop.

ESTABLISHING A CONNECTION

       To create a new connection, use the new() method with the following attributes:

       host => <HOSTNAME>
	   Required.  The hostname or literal address of the server.

       port => <PORT>
	   Optional.  The server port.

       encoding => <ENCODING>
	   Optional.  Encode and decode data (when storing and retrieving, respectively) according to ENCODING ("utf8" is recommended or see
	   Encode::Supported for details on possible ENCODING values).

	   Omit if you intend to handle raw binary data with this connection.

       on_error => $cb->($errmsg)
	   Optional.  Callback that will be fired if a connection or database-level error occurs.  The error message will be passed to the
	   callback as the sole argument.

METHODS

       All methods supported by your version of Redis should be supported.

   Normal commands
       There are two alternative approaches for handling results from commands:

       o   AnyEvent::CondVar based:

	     my $cv = $redis->command(
	       # arguments to command
	     );

	     # Then...
	     my $res;
	     eval {
		 # Could die()
		 $res = $cv->recv;
	     };
	     warn $@ if $@;

	     # or...
	     $cv->cb(sub {
	       my($cv) = @_;
	       my($result, $err) = $cv->recv
	     });

       o   Callback:

	     $redis->command(
	       # arguments,
	       sub {
		 my($result, $err) = @_;
	       });

	   (Callback is a wrapper around the $cv approach.)

   Subscriptions
       The subscription methods ("subscribe" and "psubscribe") must be used with a callback:

	 my $cv = $redis->subscribe("test", sub {
	   my($message, $channel[, $actual_channel]) = @_;
	   # ($actual_channel is provided for pattern subscriptions.)
	 });

       The $cv condition will be met on unsubscribing from the channel.

       Due to limitations of the Redis protocol the only valid commands on a connection with an active subscription are subscribe and unsubscribe
       commands.

   Common methods
       o   get

       o   set

       o   hset

       o   hget

       o   lpush

       o   lpop

       The Redis command reference (<http://redis.io/commands>) lists all commands Redis supports.

REQUIREMENTS

       This requires Redis >= 1.2.

COPYRIGHT

       Tatsuhiko Miyagawa <miyagawa@bulknews.net> 2009-

LICENSE

       This library is free software; you can redistribute it and/or modify it under the same terms as Perl itself.

AUTHORS

       Tatsuhiko Miyagawa

       David Leadbeater

       Chia-liang Kao

       franck cuny

       Lee Aylward

       Joshua Barratt

       Jeremy Zawodny

       Leon Brocard

       Michael S. Fischer

SEE ALSO

       Redis, AnyEvent

perl v5.10.1							    2011-01-12						      AnyEvent::Redis(3pm)