1Redis(3) User Contributed Perl Documentation Redis(3)
2
6 Redis - Perl binding for Redis database
7
9 version 1.995
10
12 ## Defaults to $ENV{REDIS_SERVER} or 127.0.0.1:6379
13 my $redis = Redis->new;
14 my $redis = Redis->new(server => 'redis.example.com:8080');
16 ## Set the connection name (requires Redis 2.6.9)
18 my $redis = Redis->new(
19 server => 'redis.example.com:8080',
20 name => 'my_connection_name',
21 );
22 my $generation = 0;
23 my $redis = Redis->new(
24 server => 'redis.example.com:8080',
25 name => sub { "cache-$$-".++$generation },
26 );
27 ## Use UNIX domain socket
29 my $redis = Redis->new(sock => '/path/to/socket');
30 ## Enable auto-reconnect
32 ## Try to reconnect every 1s up to 60 seconds until success
33 ## Die if you can't after that
34 my $redis = Redis->new(reconnect => 60, every => 1_000_000);
35 ## Try each 100ms up to 2 seconds (every is in microseconds)
37 my $redis = Redis->new(reconnect => 2, every => 100_000);
38 ## Enable connection timeout (in seconds)
40 my $redis = Redis->new(cnx_timeout => 60);
41 ## Enable read timeout (in seconds)
43 my $redis = Redis->new(read_timeout => 0.5);
44 ## Enable write timeout (in seconds)
46 my $redis = Redis->new(write_timeout => 1.2);
47 ## Connect via a list of Sentinels to a given service
49 my $redis = Redis->new(sentinels => [ '127.0.0.1:12345' ], service => 'mymaster');
50 ## Same, but with connection, read and write timeout on the sentinel hosts
52 my $redis = Redis->new( sentinels => [ '127.0.0.1:12345' ], service => 'mymaster',
53 sentinels_cnx_timeout => 0.1,
54 sentinels_read_timeout => 1,
55 sentinels_write_timeout => 1,
56 );
57 ## Use all the regular Redis commands, they all accept a list of
59 ## arguments
60 ## See http://redis.io/commands for full list
61 $redis->get('key');
62 $redis->set('key' => 'value');
63 $redis->sort('list', 'DESC');
64 $redis->sort(qw{list LIMIT 0 5 ALPHA DESC});
65 ## Add a coderef argument to run a command in the background
67 $redis->sort(qw{list LIMIT 0 5 ALPHA DESC}, sub {
68 my ($reply, $error) = @_;
69 die "Oops, got an error: $error\n" if defined $error;
70 print "$_\n" for @$reply;
71 });
72 long_computation();
73 $redis->wait_all_responses;
74 ## or
75 $redis->wait_one_response();
76 ## Or run a large batch of commands in a pipeline
78 my %hash = _get_large_batch_of_commands();
79 $redis->hset('h', $_, $hash{$_}, sub {}) for keys %hash;
80 $redis->wait_all_responses;
81 ## Publish/Subscribe
83 $redis->subscribe(
84 'topic_1',
85 'topic_2',
86 sub {
87 my ($message, $topic, $subscribed_topic) = @_
88 ## $subscribed_topic can be different from topic if
90 ## you use psubscribe() with wildcards
91 }
92 );
93 $redis->psubscribe('nasdaq.*', sub {...});
94 ## Blocks and waits for messages, calls subscribe() callbacks
96 ## ... forever
97 my $timeout = 10;
98 $redis->wait_for_messages($timeout) while 1;
99 ## ... until some condition
101 my $keep_going = 1; ## other code will set to false to quit
102 $redis->wait_for_messages($timeout) while $keep_going;
103 $redis->publish('topic_1', 'message');
105
107 Pure perl bindings for <http://redis.io/>
108 This version supports protocol 2.x (multi-bulk) or later of Redis
110 available at <https://github.com/antirez/redis/>.
111 This documentation lists commands which are exercised in test suite,
113 but additional commands will work correctly since protocol specifies
114 enough information to support almost all commands with same piece of
115 code with a little help of "AUTOLOAD".
116
118 Usually, running a command will wait for a response. However, if
119 you're doing large numbers of requests, it can be more efficient to use
120 what Redis calls pipelining: send multiple commands to Redis without
121 waiting for a response, then wait for the responses that come in.
122 To use pipelining, add a coderef argument as the last argument to a
124 command method call:
125 $r->set('foo', 'bar', sub {});
127 Pending responses to pipelined commands are processed in a single
129 batch, as soon as at least one of the following conditions holds:
130 · A non-pipelined (synchronous) command is called on the same
132 connection
133 · A pub/sub subscription command (one of "subscribe", "unsubscribe",
135 "psubscribe", or "punsubscribe") is about to be called on the same
136 connection.
137 · One of "wait_all_responses" or "wait_one_response" methods is
139 called explicitly.
140 The coderef you supply to a pipelined command method is invoked once
142 the response is available. It takes two arguments, $reply and $error.
143 If $error is defined, it contains the text of an error reply sent by
144 the Redis server. Otherwise, $reply is the non-error reply. For almost
145 all commands, that means it's "undef", or a defined but non-reference
146 scalar, or an array ref of any of those; but see "keys", "info", and
147 "exec".
148 Note the contrast with synchronous commands, which throw an exception
150 on receipt of an error reply, or return a non-error reply directly.
151 The fact that pipelined commands never throw an exception can be
153 particularly useful for Redis transactions; see "exec".
154
156 There is no encoding feature anymore, it has been deprecated and
157 finally removed. This module consider that any data sent to the Redis
158 server is a binary data. And it doesn't do anything when getting data
159 from the Redis server.
160 So, if you are working with character strings, you should pre-encode or
162 post-decode it if needed !
163
165 new
166 my $r = Redis->new; # $ENV{REDIS_SERVER} or 127.0.0.1:6379
167 my $r = Redis->new( server => '192.168.0.1:6379', debug => 0 );
169 my $r = Redis->new( server => '192.168.0.1:6379', encoding => undef );
170 my $r = Redis->new( sock => '/path/to/sock' );
171 my $r = Redis->new( reconnect => 60, every => 5000 );
172 my $r = Redis->new( password => 'boo' );
173 my $r = Redis->new( on_connect => sub { my ($redis) = @_; ... } );
174 my $r = Redis->new( name => 'my_connection_name' );
175 my $r = Redis->new( name => sub { "cache-for-$$" });
176 my $redis = Redis->new(sentinels => [ '127.0.0.1:12345', '127.0.0.1:23456' ],
178 service => 'mymaster');
179 ## Connect via a list of Sentinels to a given service
181 my $redis = Redis->new(sentinels => [ '127.0.0.1:12345' ], service => 'mymaster');
182 ## Same, but with connection, read and write timeout on the sentinel hosts
184 my $redis = Redis->new( sentinels => [ '127.0.0.1:12345' ], service => 'mymaster',
185 sentinels_cnx_timeout => 0.1,
186 sentinels_read_timeout => 1,
187 sentinels_write_timeout => 1,
188 );
189 "server"
191 The "server" parameter specifies the Redis server we should connect to,
193 via TCP. Use the 'IP:PORT' format. If no "server" option is present, we
194 will attempt to use the "REDIS_SERVER" environment variable. If neither
195 of those options are present, it defaults to '127.0.0.1:6379'.
196 Alternatively you can use the "sock" parameter to specify the path of
198 the UNIX domain socket where the Redis server is listening.
199 Alternatively you can use the "sentinels" parameter and the "service"
201 parameter to specify a list of sentinels to contact and try to get the
202 address of the given service name. "sentinels" must be an ArrayRef and
203 "service" an Str.
204 The "REDIS_SERVER" can be used for UNIX domain sockets too. The
206 following formats are supported:
207 · /path/to/sock
209 · unix:/path/to/sock
211 · 127.0.0.1:11011
213 · tcp:127.0.0.1:11011
215 "reconnect", "every"
217 The "reconnect" option enables auto-reconnection mode. If we cannot
219 connect to the Redis server, or if a network write fails, we enter
220 retry mode. We will try a new connection every "every" microseconds (1
221 ms by default), up-to "reconnect" seconds.
222 Be aware that read errors will always thrown an exception, and will not
224 trigger a retry until the new command is sent.
225 If we cannot re-establish a connection after "reconnect" seconds, an
227 exception will be thrown.
228 "conservative_reconnect"
230 "conservative_reconnect" option makes sure that reconnection is only
232 attempted when no pending command is ongoing. For instance, if you're
233 doing "<$redis-"incr('key')>>, and if the server properly understood
234 and processed the command, but the network connection is dropped just
235 before the server replies : the command has been processed but the
236 client doesn't know it. In this situation, if reconnect is enabled, the
237 Redis client will reconnect and send the "incr" command *again*. If it
238 succeeds, at the end the key as been incremented *two* times. To avoid
239 this issue, you can set the "conservative_reconnect" option to a true
240 value. In this case, the client will reconnect only if no request is
241 pending. Otherwise it will die with the message: "reconnect disabled
242 while responses are pending and safe reconnect mode enabled".
243 "cnx_timeout"
245 The "cnx_timeout" option enables connection timeout. The Redis client
247 will wait at most that number of seconds (can be fractional) before
248 giving up connecting to a server.
249 "sentinels_cnx_timeout"
251 The "sentinels_cnx_timeout" option enables sentinel connection timeout.
253 When using the sentinels feature, Redis client will wait at most that
254 number of seconds (can be fractional) before giving up connecting to a
255 sentinel. Default: 0.1
256 "read_timeout"
258 The "read_timeout" option enables read timeout. The Redis client will
260 wait at most that number of seconds (can be fractional) before giving
261 up when reading from the server.
262 "sentinels_read_timeout"
264 The "sentinels_read_timeout" option enables sentinel read timeout. When
266 using the sentinels feature, the Redis client will wait at most that
267 number of seconds (can be fractional) before giving up when reading
268 from a sentinel server. Default: 1
269 "write_timeout"
271 The "write_timeout" option enables write timeout. The Redis client will
273 wait at most that number of seconds (can be fractional) before giving
274 up when reading from the server.
275 "sentinels_write_timeout"
277 The "sentinels_write_timeout" option enables sentinel write timeout.
279 When using the sentinels feature, the Redis client will wait at most
280 that number of seconds (can be fractional) before giving up when
281 reading from a sentinel server. Default: 1
282 "password"
284 If your Redis server requires authentication, you can use the
286 "password" attribute. After each established connection (at the start
287 or when reconnecting), the Redis "AUTH" command will be send to the
288 server. If the password is wrong, an exception will be thrown and
289 reconnect will be disabled.
290 "on_connect"
292 You can also provide a code reference that will be immediately after
294 each successful connection. The "on_connect" attribute is used to
295 provide the code reference, and it will be called with the first
296 parameter being the Redis object.
297 "no_auto_connect_on_new"
299 You can also provide "no_auto_connect_on_new" in which case "new" won't
301 call "$obj->connect" for you implicitly, you'll have to do that
302 yourself. This is useful for figuring out how long connection setup
303 takes so you can configure the "cnx_timeout" appropriately.
304 "no_sentinels_list_update"
306 You can also provide "no_sentinels_list_update". By default (that is,
308 without this option), when successfully contacting a sentinel server,
309 the Redis client will ask it for the list of sentinels known for the
310 given service, and merge it with its list of sentinels (in the
311 "sentinels" attribute). You can disable this behavior by setting
312 "no_sentinels_list_update" to a true value.
313 "name"
315 You can also set a name for each connection. This can be very useful
317 for debugging purposes, using the "CLIENT LIST" command. To set a
318 connection name, use the "name" parameter. You can use both a scalar
319 value or a CodeRef. If the latter, it will be called after each
320 connection, with the Redis object, and it should return the connection
321 name to use. If it returns a undefined value, Redis will not set the
322 connection name.
323 Please note that there are restrictions on the name you can set, the
325 most important of which is, no spaces. See the CLIENT SETNAME
326 documentation <http://redis.io/commands/client-setname> for all the
327 juicy details. This feature is safe to use with all versions of Redis
328 servers. If "CLIENT SETNAME" support is not available (Redis servers
329 2.6.9 and above only), the name parameter is ignored.
330 "debug"
332 The "debug" parameter enables debug information to STDERR, including
334 all interactions with the server. You can also enable debug with the
335 "REDIS_DEBUG" environment variable.
336
338 connect
339 $r->connect;
340 Connects to the Redis server. This is done by default when the obect is
342 constructed using "new()", unless "no_auto_connect_on_new" has been
343 set. See this option in the "new()" constructor.
344 quit
346 $r->quit;
347 Closes the connection to the server. The "quit" method does not support
349 pipelined operation.
350 ping
352 $r->ping || die "no server?";
353 The "ping" method does not support pipelined operation.
355
357 wait_all_responses
358 Waits until all pending pipelined responses have been received, and
359 invokes the pipeline callback for each one. See "PIPELINING".
360 wait_one_response
362 Waits until the first pending pipelined response has been received, and
363 invokes its callback. See "PIPELINING".
364
366 When one of "subscribe" or "psubscribe" is used, the Redis object will
367 enter PubSub mode. When in PubSub mode only commands in this section,
368 plus "quit", will be accepted.
369 If you plan on using PubSub and other Redis functions, you should use
371 two Redis objects, one dedicated to PubSub and the other for regular
372 commands.
373 All Pub/Sub commands receive a callback as the last parameter. This
375 callback receives three arguments:
376 · The published message.
378 · The topic over which the message was sent.
380 · The subscribed topic that matched the topic for the message. With
382 "subscribe" these last two are the same, always. But with
383 "psubscribe", this parameter tells you the pattern that matched.
384 See the Pub-Sub notes <http://redis.io/topics/pubsub> for more
386 information about the messages you will receive on your callbacks after
387 each "subscribe", "unsubscribe", "psubscribe" and "punsubscribe".
388 publish
390 $r->publish($topic, $message);
391 Publishes the $message to the $topic.
393 subscribe
395 $r->subscribe(
396 @topics_to_subscribe_to,
397 my $savecallback = sub {
398 my ($message, $topic, $subscribed_topic) = @_;
399 ...
400 },
401 );
402 Subscribe one or more topics. Messages published into one of them will
404 be received by Redis, and the specified callback will be executed.
405 unsubscribe
407 $r->unsubscribe(@topic_list, $savecallback);
408 Stops receiving messages via $savecallback for all the topics in
410 @topic_list. WARNING: it is important that you give the same calleback
411 that you used for subscribtion. The value of the CodeRef must be the
412 same, as this is how internally the code identifies it.
413 psubscribe
415 my @topic_matches = ('prefix1.*', 'prefix2.*');
416 $r->psubscribe(@topic_matches, my $savecallback = sub { my ($m, $t, $s) = @_; ... });
417 Subscribes a pattern of topics. All messages to topics that match the
419 pattern will be delivered to the callback.
420 punsubscribe
422 my @topic_matches = ('prefix1.*', 'prefix2.*');
423 $r->punsubscribe(@topic_matches, $savecallback);
424 Stops receiving messages via $savecallback for all the topics pattern
426 matches in @topic_list. WARNING: it is important that you give the same
427 calleback that you used for subscribtion. The value of the CodeRef must
428 be the same, as this is how internally the code identifies it.
429 is_subscriber
431 if ($r->is_subscriber) { say "We are in Pub/Sub mode!" }
432 Returns true if we are in Pub/Sub mode.
434 wait_for_messages
436 my $keep_going = 1; ## Set to false somewhere to leave the loop
437 my $timeout = 5;
438 $r->wait_for_messages($timeout) while $keep_going;
439 Blocks, waits for incoming messages and delivers them to the
441 appropriate callbacks.
442 Requires a single parameter, the number of seconds to wait for
444 messages. Use 0 to wait for ever. If a positive non-zero value is used,
445 it will return after that amount of seconds without a single
446 notification.
447 Please note that the timeout is not a commitment to return control to
449 the caller at most each "timeout" seconds, but more a idle timeout,
450 were control will return to the caller if Redis is idle (as in no
451 messages were received during the timeout period) for more than
452 "timeout" seconds.
453 The "wait_for_messages" call returns the number of messages processed
455 during the run.
456
458 methods that return multiple values
459 When a method returns more than one value, it checks the context and
460 returns either a list of values or an ArrayRef.
461 transaction-handling methods
463 Warning: the behaviour of the TRANSACTIONS commands when combined with
464 pipelining is still under discussion, and you should NOT use them at
465 the same time just now.
466 You can follow the discussion to see the open issues with this
468 <https://github.com/PerlRedis/perl-redis/issues/17>.
469 exec
471 my @individual_replies = $r->exec;
472 "exec" has special behaviour when run in a pipeline: the $reply
474 argument to the pipeline callback is an array ref whose elements are
475 themselves "[$reply, $error]" pairs. This means that you can
476 accurately detect errors yielded by any command in the transaction, and
477 without any exceptions being thrown.
478 keys
480 my @keys = $r->keys( '*glob_pattern*' );
481 my $keys = $r->keys( '*glob_pattern*' ); # count of matching keys
482 Note that synchronous "keys" calls in a scalar context return the
484 number of matching keys (not an array ref of matching keys as you might
485 expect). This does not apply in pipelined mode: assuming the server
486 returns a list of keys, as expected, it is always passed to the
487 pipeline callback as an array ref.
488 hashes
490 Hashes in Redis cannot be nested as in perl, if you want to store a
491 nested hash, you need to serialize the hash first. If you want to have
492 a named hash, you can use Redis-hashes. You will find an example in the
493 tests of this module t/01-basic.t
494 eval
496 Note that this commands sends the Lua script every time you call it.
497 See "evalsha" and "script_load" for an alternative.
498 info
500 my $info_hash = $r->info;
501 The "info" method is unique in that it decodes the server's response
503 into a hashref, if possible. This decoding happens in both synchronous
504 and pipelined modes.
505
507 del
508 $r->del(key [key ...])
509 Delete a key (see <http://redis.io/commands/del>)
511 dump
513 $r->dump(key)
514 Return a serialized version of the value stored at the specified key.
516 (see <http://redis.io/commands/dump>)
517 exists
519 $r->exists(key)
520 Determine if a key exists (see <http://redis.io/commands/exists>)
522 expire
524 $r->expire(key, seconds)
525 Set a key's time to live in seconds (see
527 <http://redis.io/commands/expire>)
528 expireat
530 $r->expireat(key, timestamp)
531 Set the expiration for a key as a UNIX timestamp (see
533 <http://redis.io/commands/expireat>)
534 keys
536 $r->keys(pattern)
537 Find all keys matching the given pattern (see
539 <http://redis.io/commands/keys>)
540 migrate
542 $r->migrate(host, port, key, destination-db, timeout, [COPY], [REPLACE])
543 Atomically transfer a key from a Redis instance to another one. (see
545 <http://redis.io/commands/migrate>)
546 move
548 $r->move(key, db)
549 Move a key to another database (see <http://redis.io/commands/move>)
551 object
553 $r->object(subcommand, [arguments [arguments ...]])
554 Inspect the internals of Redis objects (see
556 <http://redis.io/commands/object>)
557 persist
559 $r->persist(key)
560 Remove the expiration from a key (see
562 <http://redis.io/commands/persist>)
563 pexpire
565 $r->pexpire(key, milliseconds)
566 Set a key's time to live in milliseconds (see
568 <http://redis.io/commands/pexpire>)
569 pexpireat
571 $r->pexpireat(key, milliseconds-timestamp)
572 Set the expiration for a key as a UNIX timestamp specified in
574 milliseconds (see <http://redis.io/commands/pexpireat>)
575 pttl
577 $r->pttl(key)
578 Get the time to live for a key in milliseconds (see
580 <http://redis.io/commands/pttl>)
581 randomkey
583 $r->randomkey()
584 Return a random key from the keyspace (see
586 <http://redis.io/commands/randomkey>)
587 rename
589 $r->rename(key, newkey)
590 Rename a key (see <http://redis.io/commands/rename>)
592 renamenx
594 $r->renamenx(key, newkey)
595 Rename a key, only if the new key does not exist (see
597 <http://redis.io/commands/renamenx>)
598 restore
600 $r->restore(key, ttl, serialized-value)
601 Create a key using the provided serialized value, previously obtained
603 using DUMP. (see <http://redis.io/commands/restore>)
604 scan
606 $r->scan(cursor, [MATCH pattern], [COUNT count])
607 Incrementally iterate the keys space (see
609 <http://redis.io/commands/scan>)
610 sort
612 $r->sort(key, [BY pattern], [LIMIT offset count], [GET pattern [GET pattern ...]], [ASC|DESC], [ALPHA], [STORE destination])
613 Sort the elements in a list, set or sorted set (see
615 <http://redis.io/commands/sort>)
616 ttl
618 $r->ttl(key)
619 Get the time to live for a key (see <http://redis.io/commands/ttl>)
621 type
623 $r->type(key)
624 Determine the type stored at key (see <http://redis.io/commands/type>)
626
628 append
629 $r->append(key, value)
630 Append a value to a key (see <http://redis.io/commands/append>)
632 bitcount
634 $r->bitcount(key, [start end])
635 Count set bits in a string (see <http://redis.io/commands/bitcount>)
637 bitop
639 $r->bitop(operation, destkey, key [key ...])
640 Perform bitwise operations between strings (see
642 <http://redis.io/commands/bitop>)
643 bitpos
645 $r->bitpos(key, bit, [start], [end])
646 Find first bit set or clear in a string (see
648 <http://redis.io/commands/bitpos>)
649 blpop
651 $r->blpop(key [key ...], timeout)
652 Remove and get the first element in a list, or block until one is
654 available (see <http://redis.io/commands/blpop>)
655 brpop
657 $r->brpop(key [key ...], timeout)
658 Remove and get the last element in a list, or block until one is
660 available (see <http://redis.io/commands/brpop>)
661 brpoplpush
663 $r->brpoplpush(source, destination, timeout)
664 Pop a value from a list, push it to another list and return it; or
666 block until one is available (see
667 <http://redis.io/commands/brpoplpush>)
668 decr
670 $r->decr(key)
671 Decrement the integer value of a key by one (see
673 <http://redis.io/commands/decr>)
674 decrby
676 $r->decrby(key, decrement)
677 Decrement the integer value of a key by the given number (see
679 <http://redis.io/commands/decrby>)
680 get
682 $r->get(key)
683 Get the value of a key (see <http://redis.io/commands/get>)
685 getbit
687 $r->getbit(key, offset)
688 Returns the bit value at offset in the string value stored at key (see
690 <http://redis.io/commands/getbit>)
691 getrange
693 $r->getrange(key, start, end)
694 Get a substring of the string stored at a key (see
696 <http://redis.io/commands/getrange>)
697 getset
699 $r->getset(key, value)
700 Set the string value of a key and return its old value (see
702 <http://redis.io/commands/getset>)
703 incr
705 $r->incr(key)
706 Increment the integer value of a key by one (see
708 <http://redis.io/commands/incr>)
709 incrby
711 $r->incrby(key, increment)
712 Increment the integer value of a key by the given amount (see
714 <http://redis.io/commands/incrby>)
715 incrbyfloat
717 $r->incrbyfloat(key, increment)
718 Increment the float value of a key by the given amount (see
720 <http://redis.io/commands/incrbyfloat>)
721 mget
723 $r->mget(key [key ...])
724 Get the values of all the given keys (see
726 <http://redis.io/commands/mget>)
727 mset
729 $r->mset(key value [key value ...])
730 Set multiple keys to multiple values (see
732 <http://redis.io/commands/mset>)
733 msetnx
735 $r->msetnx(key value [key value ...])
736 Set multiple keys to multiple values, only if none of the keys exist
738 (see <http://redis.io/commands/msetnx>)
739 psetex
741 $r->psetex(key, milliseconds, value)
742 Set the value and expiration in milliseconds of a key (see
744 <http://redis.io/commands/psetex>)
745 set
747 $r->set(key, value, ['EX', seconds], ['PX', milliseconds], ['NX'|'XX'])
748 Set the string value of a key (see <http://redis.io/commands/set>).
750 Example:
751 $r->set('key', 'test', 'EX', 60, 'NX')
753 setbit
755 $r->setbit(key, offset, value)
756 Sets or clears the bit at offset in the string value stored at key (see
758 <http://redis.io/commands/setbit>)
759 setex
761 $r->setex(key, seconds, value)
762 Set the value and expiration of a key (see
764 <http://redis.io/commands/setex>)
765 setnx
767 $r->setnx(key, value)
768 Set the value of a key, only if the key does not exist (see
770 <http://redis.io/commands/setnx>)
771 setrange
773 $r->setrange(key, offset, value)
774 Overwrite part of a string at key starting at the specified offset (see
776 <http://redis.io/commands/setrange>)
777 strlen
779 $r->strlen(key)
780 Get the length of the value stored in a key (see
782 <http://redis.io/commands/strlen>)
783
785 hdel
786 $r->hdel(key, field [field ...])
787 Delete one or more hash fields (see <http://redis.io/commands/hdel>)
789 hexists
791 $r->hexists(key, field)
792 Determine if a hash field exists (see
794 <http://redis.io/commands/hexists>)
795 hget
797 $r->hget(key, field)
798 Get the value of a hash field (see <http://redis.io/commands/hget>)
800 hgetall
802 $r->hgetall(key)
803 Get all the fields and values in a hash (see
805 <http://redis.io/commands/hgetall>)
806 hincrby
808 $r->hincrby(key, field, increment)
809 Increment the integer value of a hash field by the given number (see
811 <http://redis.io/commands/hincrby>)
812 hincrbyfloat
814 $r->hincrbyfloat(key, field, increment)
815 Increment the float value of a hash field by the given amount (see
817 <http://redis.io/commands/hincrbyfloat>)
818 hkeys
820 $r->hkeys(key)
821 Get all the fields in a hash (see <http://redis.io/commands/hkeys>)
823 hlen
825 $r->hlen(key)
826 Get the number of fields in a hash (see
828 <http://redis.io/commands/hlen>)
829 hmget
831 $r->hmget(key, field [field ...])
832 Get the values of all the given hash fields (see
834 <http://redis.io/commands/hmget>)
835 hmset
837 $r->hmset(key, field value [field value ...])
838 Set multiple hash fields to multiple values (see
840 <http://redis.io/commands/hmset>)
841 hscan
843 $r->hscan(key, cursor, [MATCH pattern], [COUNT count])
844 Incrementally iterate hash fields and associated values (see
846 <http://redis.io/commands/hscan>)
847 hset
849 $r->hset(key, field, value)
850 Set the string value of a hash field (see
852 <http://redis.io/commands/hset>)
853 hsetnx
855 $r->hsetnx(key, field, value)
856 Set the value of a hash field, only if the field does not exist (see
858 <http://redis.io/commands/hsetnx>)
859 hvals
861 $r->hvals(key)
862 Get all the values in a hash (see <http://redis.io/commands/hvals>)
864
866 sadd
867 $r->sadd(key, member [member ...])
868 Add one or more members to a set (see <http://redis.io/commands/sadd>)
870 scard
872 $r->scard(key)
873 Get the number of members in a set (see
875 <http://redis.io/commands/scard>)
876 sdiff
878 $r->sdiff(key [key ...])
879 Subtract multiple sets (see <http://redis.io/commands/sdiff>)
881 sdiffstore
883 $r->sdiffstore(destination, key [key ...])
884 Subtract multiple sets and store the resulting set in a key (see
886 <http://redis.io/commands/sdiffstore>)
887 sinter
889 $r->sinter(key [key ...])
890 Intersect multiple sets (see <http://redis.io/commands/sinter>)
892 sinterstore
894 $r->sinterstore(destination, key [key ...])
895 Intersect multiple sets and store the resulting set in a key (see
897 <http://redis.io/commands/sinterstore>)
898 sismember
900 $r->sismember(key, member)
901 Determine if a given value is a member of a set (see
903 <http://redis.io/commands/sismember>)
904 smembers
906 $r->smembers(key)
907 Get all the members in a set (see <http://redis.io/commands/smembers>)
909 smove
911 $r->smove(source, destination, member)
912 Move a member from one set to another (see
914 <http://redis.io/commands/smove>)
915 spop
917 $r->spop(key)
918 Remove and return a random member from a set (see
920 <http://redis.io/commands/spop>)
921 srandmember
923 $r->srandmember(key, [count])
924 Get one or multiple random members from a set (see
926 <http://redis.io/commands/srandmember>)
927 srem
929 $r->srem(key, member [member ...])
930 Remove one or more members from a set (see
932 <http://redis.io/commands/srem>)
933 sscan
935 $r->sscan(key, cursor, [MATCH pattern], [COUNT count])
936 Incrementally iterate Set elements (see
938 <http://redis.io/commands/sscan>)
939 sunion
941 $r->sunion(key [key ...])
942 Add multiple sets (see <http://redis.io/commands/sunion>)
944 sunionstore
946 $r->sunionstore(destination, key [key ...])
947 Add multiple sets and store the resulting set in a key (see
949 <http://redis.io/commands/sunionstore>)
950
952 zadd
953 $r->zadd(key, score member [score member ...])
954 Add one or more members to a sorted set, or update its score if it
956 already exists (see <http://redis.io/commands/zadd>)
957 zcard
959 $r->zcard(key)
960 Get the number of members in a sorted set (see
962 <http://redis.io/commands/zcard>)
963 zcount
965 $r->zcount(key, min, max)
966 Count the members in a sorted set with scores within the given values
968 (see <http://redis.io/commands/zcount>)
969 zincrby
971 $r->zincrby(key, increment, member)
972 Increment the score of a member in a sorted set (see
974 <http://redis.io/commands/zincrby>)
975 zinterstore
977 $r->zinterstore(destination, numkeys, key [key ...], [WEIGHTS weight [weight ...]], [AGGREGATE SUM|MIN|MAX])
978 Intersect multiple sorted sets and store the resulting sorted set in a
980 new key (see <http://redis.io/commands/zinterstore>)
981 zlexcount
983 $r->zlexcount(key, min, max)
984 Count the number of members in a sorted set between a given
986 lexicographical range (see <http://redis.io/commands/zlexcount>)
987 zrange
989 $r->zrange(key, start, stop, [WITHSCORES])
990 Return a range of members in a sorted set, by index (see
992 <http://redis.io/commands/zrange>)
993 zrangebylex
995 $r->zrangebylex(key, min, max, [LIMIT offset count])
996 Return a range of members in a sorted set, by lexicographical range
998 (see <http://redis.io/commands/zrangebylex>)
999 zrangebyscore
1001 $r->zrangebyscore(key, min, max, [WITHSCORES], [LIMIT offset count])
1002 Return a range of members in a sorted set, by score (see
1004 <http://redis.io/commands/zrangebyscore>)
1005 zrank
1007 $r->zrank(key, member)
1008 Determine the index of a member in a sorted set (see
1010 <http://redis.io/commands/zrank>)
1011 zrem
1013 $r->zrem(key, member [member ...])
1014 Remove one or more members from a sorted set (see
1016 <http://redis.io/commands/zrem>)
1017 zremrangebylex
1019 $r->zremrangebylex(key, min, max)
1020 Remove all members in a sorted set between the given lexicographical
1022 range (see <http://redis.io/commands/zremrangebylex>)
1023 zremrangebyrank
1025 $r->zremrangebyrank(key, start, stop)
1026 Remove all members in a sorted set within the given indexes (see
1028 <http://redis.io/commands/zremrangebyrank>)
1029 zremrangebyscore
1031 $r->zremrangebyscore(key, min, max)
1032 Remove all members in a sorted set within the given scores (see
1034 <http://redis.io/commands/zremrangebyscore>)
1035 zrevrange
1037 $r->zrevrange(key, start, stop, [WITHSCORES])
1038 Return a range of members in a sorted set, by index, with scores
1040 ordered from high to low (see <http://redis.io/commands/zrevrange>)
1041 zrevrangebylex
1043 $r->zrevrangebylex(key, max, min, [LIMIT offset count])
1044 Return a range of members in a sorted set, by lexicographical range,
1046 ordered from higher to lower strings. (see
1047 <http://redis.io/commands/zrevrangebylex>)
1048 zrevrangebyscore
1050 $r->zrevrangebyscore(key, max, min, [WITHSCORES], [LIMIT offset count])
1051 Return a range of members in a sorted set, by score, with scores
1053 ordered from high to low (see
1054 <http://redis.io/commands/zrevrangebyscore>)
1055 zrevrank
1057 $r->zrevrank(key, member)
1058 Determine the index of a member in a sorted set, with scores ordered
1060 from high to low (see <http://redis.io/commands/zrevrank>)
1061 zscan
1063 $r->zscan(key, cursor, [MATCH pattern], [COUNT count])
1064 Incrementally iterate sorted sets elements and associated scores (see
1066 <http://redis.io/commands/zscan>)
1067 zscore
1069 $r->zscore(key, member)
1070 Get the score associated with the given member in a sorted set (see
1072 <http://redis.io/commands/zscore>)
1073 zunionstore
1075 $r->zunionstore(destination, numkeys, key [key ...], [WEIGHTS weight [weight ...]], [AGGREGATE SUM|MIN|MAX])
1076 Add multiple sorted sets and store the resulting sorted set in a new
1078 key (see <http://redis.io/commands/zunionstore>)
1079
1081 pfadd
1082 $r->pfadd(key, element [element ...])
1083 Adds the specified elements to the specified HyperLogLog. (see
1085 <http://redis.io/commands/pfadd>)
1086 pfcount
1088 $r->pfcount(key [key ...])
1089 Return the approximated cardinality of the set(s) observed by the
1091 HyperLogLog at key(s). (see <http://redis.io/commands/pfcount>)
1092 pfmerge
1094 $r->pfmerge(destkey, sourcekey [sourcekey ...])
1095 Merge N different HyperLogLogs into a single one. (see
1097 <http://redis.io/commands/pfmerge>)
1098
1100 pubsub
1101 $r->pubsub(subcommand, [argument [argument ...]])
1102 Inspect the state of the Pub/Sub subsystem (see
1104 <http://redis.io/commands/pubsub>)
1105
1107 discard
1108 $r->discard()
1109 Discard all commands issued after MULTI (see
1111 <http://redis.io/commands/discard>)
1112 exec
1114 $r->exec()
1115 Execute all commands issued after MULTI (see
1117 <http://redis.io/commands/exec>)
1118 multi
1120 $r->multi()
1121 Mark the start of a transaction block (see
1123 <http://redis.io/commands/multi>)
1124 unwatch
1126 $r->unwatch()
1127 Forget about all watched keys (see <http://redis.io/commands/unwatch>)
1129 watch
1131 $r->watch(key [key ...])
1132 Watch the given keys to determine execution of the MULTI/EXEC block
1134 (see <http://redis.io/commands/watch>)
1135
1137 eval
1138 $r->eval(script, numkeys, key [key ...], arg [arg ...])
1139 Execute a Lua script server side (see <http://redis.io/commands/eval>)
1141 evalsha
1143 $r->evalsha(sha1, numkeys, key [key ...], arg [arg ...])
1144 Execute a Lua script server side (see
1146 <http://redis.io/commands/evalsha>)
1147 script_exists
1149 $r->script_exists(script [script ...])
1150 Check existence of scripts in the script cache. (see
1152 <http://redis.io/commands/script-exists>)
1153 script_flush
1155 $r->script_flush()
1156 Remove all the scripts from the script cache. (see
1158 <http://redis.io/commands/script-flush>)
1159 script_kill
1161 $r->script_kill()
1162 Kill the script currently in execution. (see
1164 <http://redis.io/commands/script-kill>)
1165 script_load
1167 $r->script_load(script)
1168 Load the specified Lua script into the script cache. (see
1170 <http://redis.io/commands/script-load>)
1171
1173 auth
1174 $r->auth(password)
1175 Authenticate to the server (see <http://redis.io/commands/auth>)
1177 echo
1179 $r->echo(message)
1180 Echo the given string (see <http://redis.io/commands/echo>)
1182 ping
1184 $r->ping()
1185 Ping the server (see <http://redis.io/commands/ping>)
1187 quit
1189 $r->quit()
1190 Close the connection (see <http://redis.io/commands/quit>)
1192 select
1194 $r->select(index)
1195 Change the selected database for the current connection (see
1197 <http://redis.io/commands/select>)
1198
1200 bgrewriteaof
1201 $r->bgrewriteaof()
1202 Asynchronously rewrite the append-only file (see
1204 <http://redis.io/commands/bgrewriteaof>)
1205 bgsave
1207 $r->bgsave()
1208 Asynchronously save the dataset to disk (see
1210 <http://redis.io/commands/bgsave>)
1211 client_getname
1213 $r->client_getname()
1214 Get the current connection name (see
1216 <http://redis.io/commands/client-getname>)
1217 client_kill
1219 $r->client_kill([ip:port], [ID client-id], [TYPE normal|slave|pubsub], [ADDR ip:port], [SKIPME yes/no])
1220 Kill the connection of a client (see
1222 <http://redis.io/commands/client-kill>)
1223 client_list
1225 $r->client_list()
1226 Get the list of client connections (see
1228 <http://redis.io/commands/client-list>)
1229 client_pause
1231 $r->client_pause(timeout)
1232 Stop processing commands from clients for some time (see
1234 <http://redis.io/commands/client-pause>)
1235 client_setname
1237 $r->client_setname(connection-name)
1238 Set the current connection name (see
1240 <http://redis.io/commands/client-setname>)
1241 cluster_slots
1243 $r->cluster_slots()
1244 Get array of Cluster slot to node mappings (see
1246 <http://redis.io/commands/cluster-slots>)
1247 command
1249 $r->command()
1250 Get array of Redis command details (see
1252 <http://redis.io/commands/command>)
1253 command_count
1255 $r->command_count()
1256 Get total number of Redis commands (see
1258 <http://redis.io/commands/command-count>)
1259 command_getkeys
1261 $r->command_getkeys()
1262 Extract keys given a full Redis command (see
1264 <http://redis.io/commands/command-getkeys>)
1265 command_info
1267 $r->command_info(command-name [command-name ...])
1268 Get array of specific Redis command details (see
1270 <http://redis.io/commands/command-info>)
1271 config_get
1273 $r->config_get(parameter)
1274 Get the value of a configuration parameter (see
1276 <http://redis.io/commands/config-get>)
1277 config_resetstat
1279 $r->config_resetstat()
1280 Reset the stats returned by INFO (see
1282 <http://redis.io/commands/config-resetstat>)
1283 config_rewrite
1285 $r->config_rewrite()
1286 Rewrite the configuration file with the in memory configuration (see
1288 <http://redis.io/commands/config-rewrite>)
1289 config_set
1291 $r->config_set(parameter, value)
1292 Set a configuration parameter to the given value (see
1294 <http://redis.io/commands/config-set>)
1295 dbsize
1297 $r->dbsize()
1298 Return the number of keys in the selected database (see
1300 <http://redis.io/commands/dbsize>)
1301 debug_object
1303 $r->debug_object(key)
1304 Get debugging information about a key (see
1306 <http://redis.io/commands/debug-object>)
1307 debug_segfault
1309 $r->debug_segfault()
1310 Make the server crash (see <http://redis.io/commands/debug-segfault>)
1312 flushall
1314 $r->flushall()
1315 Remove all keys from all databases (see
1317 <http://redis.io/commands/flushall>)
1318 flushdb
1320 $r->flushdb()
1321 Remove all keys from the current database (see
1323 <http://redis.io/commands/flushdb>)
1324 info
1326 $r->info([section])
1327 Get information and statistics about the server (see
1329 <http://redis.io/commands/info>)
1330 lastsave
1332 $r->lastsave()
1333 Get the UNIX time stamp of the last successful save to disk (see
1335 <http://redis.io/commands/lastsave>)
1336 lindex
1338 $r->lindex(key, index)
1339 Get an element from a list by its index (see
1341 <http://redis.io/commands/lindex>)
1342 linsert
1344 $r->linsert(key, BEFORE|AFTER, pivot, value)
1345 Insert an element before or after another element in a list (see
1347 <http://redis.io/commands/linsert>)
1348 llen
1350 $r->llen(key)
1351 Get the length of a list (see <http://redis.io/commands/llen>)
1353 lpop
1355 $r->lpop(key)
1356 Remove and get the first element in a list (see
1358 <http://redis.io/commands/lpop>)
1359 lpush
1361 $r->lpush(key, value [value ...])
1362 Prepend one or multiple values to a list (see
1364 <http://redis.io/commands/lpush>)
1365 lpushx
1367 $r->lpushx(key, value)
1368 Prepend a value to a list, only if the list exists (see
1370 <http://redis.io/commands/lpushx>)
1371 lrange
1373 $r->lrange(key, start, stop)
1374 Get a range of elements from a list (see
1376 <http://redis.io/commands/lrange>)
1377 lrem
1379 $r->lrem(key, count, value)
1380 Remove elements from a list (see <http://redis.io/commands/lrem>)
1382 lset
1384 $r->lset(key, index, value)
1385 Set the value of an element in a list by its index (see
1387 <http://redis.io/commands/lset>)
1388 ltrim
1390 $r->ltrim(key, start, stop)
1391 Trim a list to the specified range (see
1393 <http://redis.io/commands/ltrim>)
1394 monitor
1396 $r->monitor()
1397 Listen for all requests received by the server in real time (see
1399 <http://redis.io/commands/monitor>)
1400 role
1402 $r->role()
1403 Return the role of the instance in the context of replication (see
1405 <http://redis.io/commands/role>)
1406 rpop
1408 $r->rpop(key)
1409 Remove and get the last element in a list (see
1411 <http://redis.io/commands/rpop>)
1412 rpoplpush
1414 $r->rpoplpush(source, destination)
1415 Remove the last element in a list, append it to another list and return
1417 it (see <http://redis.io/commands/rpoplpush>)
1418 rpush
1420 $r->rpush(key, value [value ...])
1421 Append one or multiple values to a list (see
1423 <http://redis.io/commands/rpush>)
1424 rpushx
1426 $r->rpushx(key, value)
1427 Append a value to a list, only if the list exists (see
1429 <http://redis.io/commands/rpushx>)
1430 save
1432 $r->save()
1433 Synchronously save the dataset to disk (see
1435 <http://redis.io/commands/save>)
1436 shutdown
1438 $r->shutdown([NOSAVE], [SAVE])
1439 Synchronously save the dataset to disk and then shut down the server
1441 (see <http://redis.io/commands/shutdown>)
1442 slaveof
1444 $r->slaveof(host, port)
1445 Make the server a slave of another instance, or promote it as master
1447 (see <http://redis.io/commands/slaveof>)
1448 slowlog
1450 $r->slowlog(subcommand, [argument])
1451 Manages the Redis slow queries log (see
1453 <http://redis.io/commands/slowlog>)
1454 sync
1456 $r->sync()
1457 Internal command used for replication (see
1459 <http://redis.io/commands/sync>)
1460 time
1462 $r->time()
1463 Return the current server time (see <http://redis.io/commands/time>)
1465
1467 The following persons contributed to this project (random order):
1468 · Aaron Crane (pipelining and AUTOLOAD caching support)
1470 · Dirk Vleugels
1472 · Flavio Poletti
1474 · Jeremy Zawodny
1476 · sunnavy at bestpractical.com
1478 · Thiago Berlitz Rondon
1480 · Ulrich Habel
1482 · Ivan Kruglov
1484 · Steffen Mueller <smueller@cpan.org>
1486
1488 · Pedro Melo <melo@cpan.org>
1489 · Damien Krotkine <dams@cpan.org>
1491
1493 This software is Copyright (c) 2015 by Pedro Melo, Damien Krotkine.
1494 This is free software, licensed under:
1496 The Artistic License 2.0 (GPL Compatible)
1498perl v5.30.0 2019-07-26 Redis(3)