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https://github.com/jraspass/redis-xs
Fast Perl Redis 6+ client using hiredis over RESP3
https://github.com/jraspass/redis-xs
perl
Last synced: 4 days ago
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Fast Perl Redis 6+ client using hiredis over RESP3
- Host: GitHub
- URL: https://github.com/jraspass/redis-xs
- Owner: JRaspass
- Created: 2023-05-10T09:58:38.000Z (over 1 year ago)
- Default Branch: main
- Last Pushed: 2024-01-04T05:03:32.000Z (12 months ago)
- Last Synced: 2024-11-13T06:33:31.892Z (about 2 months ago)
- Topics: perl
- Language: C
- Homepage:
- Size: 86.9 KB
- Stars: 0
- Watchers: 2
- Forks: 0
- Open Issues: 0
-
Metadata Files:
- Readme: README.pod
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README
=encoding UTF-8
=head1 NAME
Redis::XS - Fast Redis 6+ client using hiredis over RESP3
=head1 BENCHMARKS
$ perl bench.pl
Redis 7.0.10
Perl 5.37.9
CPU 11th Gen Intel(R) Core(TM) i7-1185G7 @ 3.00GHz
Redis 2.000
Redis::Fast 0.35
Redis::XS 0.001
PING
Rate Redis Redis::Fast Redis::XS
Redis 66834/s -- -42% -72%
Redis::Fast 116081/s 74% -- -52%
Redis::XS 240941/s 261% 108% --
SET foo 'bar'
Rate Redis Redis::Fast Redis::XS
Redis 88494/s -- -50% -63%
Redis::Fast 177535/s 101% -- -26%
Redis::XS 240941/s 172% 36% --
GET foo
Rate Redis Redis::Fast Redis::XS
Redis 83872/s -- -55% -66%
Redis::Fast 185579/s 121% -- -25%
Redis::XS 248685/s 197% 34% --
=head1 COMMANDS
=head2 bitmap
=head3 bitcount
$r->bitcount(...);
Counts the number of set bits (population counting) in a string.
Since 2.6.0. See L.
=head3 bitfield
$r->bitfield(...);
Performs arbitrary bitfield integer operations on strings.
Since 3.2.0. See L.
=head3 bitfield_ro
$r->bitfield_ro(...);
Performs arbitrary read-only bitfield integer operations on strings.
Since 6.0.0. See L.
=head3 bitop
$r->bitop(...);
Performs bitwise operations on multiple strings, and stores the result.
Since 2.6.0. See L.
=head3 bitpos
$r->bitpos(...);
Finds the first set (1) or clear (0) bit in a string.
Since 2.8.7. See L.
=head3 getbit
$r->getbit($key, $offset);
Returns a bit value by offset.
Since 2.2.0. See L.
=head3 setbit
$r->setbit($key, $offset, $value);
Sets or clears the bit at offset of the string value. Creates the key if it doesn't exist.
Since 2.2.0. See L.
=head2 cluster
=head3 asking
$r->asking;
Signals that a cluster client is following an -ASK redirect.
Since 3.0.0. See L.
=head3 cluster addslots
$r->cluster_addslots(@slots);
Assigns new hash slots to a node.
Since 3.0.0. See L.
=head3 cluster addslotsrange
$r->cluster_addslotsrange(...);
Assigns new hash slot ranges to a node.
Since 7.0.0. See L.
=head3 cluster bumpepoch
$r->cluster_bumpepoch;
Advances the cluster config epoch.
Since 3.0.0. See L.
=head3 cluster count-failure-reports
$r->cluster_count_failure_reports($node_id);
Returns the number of active failure reports active for a node.
Since 3.0.0. See L.
=head3 cluster countkeysinslot
$r->cluster_countkeysinslot($slot);
Returns the number of keys in a hash slot.
Since 3.0.0. See L.
=head3 cluster delslots
$r->cluster_delslots(@slots);
Sets hash slots as unbound for a node.
Since 3.0.0. See L.
=head3 cluster delslotsrange
$r->cluster_delslotsrange(...);
Sets hash slot ranges as unbound for a node.
Since 7.0.0. See L.
=head3 cluster failover
$r->cluster_failover(...);
Forces a replica to perform a manual failover of its master.
Since 3.0.0. See L.
=head3 cluster flushslots
$r->cluster_flushslots;
Deletes all slots information from a node.
Since 3.0.0. See L.
=head3 cluster forget
$r->cluster_forget($node_id);
Removes a node from the nodes table.
Since 3.0.0. See L.
=head3 cluster getkeysinslot
$r->cluster_getkeysinslot($slot, $count);
Returns the key names in a hash slot.
Since 3.0.0. See L.
=head3 cluster help
$r->cluster_help;
Returns helpful text about the different subcommands.
Since 5.0.0. See L.
=head3 cluster info
$r->cluster_info;
Returns information about the state of a node.
Since 3.0.0. See L.
=head3 cluster keyslot
$r->cluster_keyslot($key);
Returns the hash slot for a key.
Since 3.0.0. See L.
=head3 cluster links
$r->cluster_links;
Returns a list of all TCP links to and from peer nodes.
Since 7.0.0. See L.
=head3 cluster meet
$r->cluster_meet(...);
Forces a node to handshake with another node.
Since 3.0.0. See L.
=head3 cluster myid
$r->cluster_myid;
Returns the ID of a node.
Since 3.0.0. See L.
=head3 cluster myshardid
$r->cluster_myshardid;
Returns the shard ID of a node.
Since 7.2.0. See L.
=head3 cluster nodes
$r->cluster_nodes;
Returns the cluster configuration for a node.
Since 3.0.0. See L.
=head3 cluster replicas
$r->cluster_replicas($node_id);
Lists the replica nodes of a master node.
Since 5.0.0. See L.
=head3 cluster replicate
$r->cluster_replicate($node_id);
Configure a node as replica of a master node.
Since 3.0.0. See L.
=head3 cluster reset
$r->cluster_reset(...);
Resets a node.
Since 3.0.0. See L.
=head3 cluster saveconfig
$r->cluster_saveconfig;
Forces a node to save the cluster configuration to disk.
Since 3.0.0. See L.
=head3 cluster set-config-epoch
$r->cluster_set_config_epoch($config_epoch);
Sets the configuration epoch for a new node.
Since 3.0.0. See L.
=head3 cluster setslot
$r->cluster_setslot(...);
Binds a hash slot to a node.
Since 3.0.0. See L.
=head3 cluster shards
$r->cluster_shards;
Returns the mapping of cluster slots to shards.
Since 7.0.0. See L.
=head3 cluster slaves
$r->cluster_slaves($node_id);
Lists the replica nodes of a master node.
Since 3.0.0. See L.
=head3 cluster slots
$r->cluster_slots;
Returns the mapping of cluster slots to nodes.
Since 3.0.0. See L.
=head3 readonly
$r->readonly;
Enables read-only queries for a connection to a Redis Cluster replica node.
Since 3.0.0. See L.
=head3 readwrite
$r->readwrite;
Enables read-write queries for a connection to a Reids Cluster replica node.
Since 3.0.0. See L.
=head2 connection
=head3 auth
$r->auth(...);
Authenticates the connection.
Since 1.0.0. See L.
=head3 client caching
$r->client_caching(...);
Instructs the server whether to track the keys in the next request.
Since 6.0.0. See L.
=head3 client getname
$r->client_getname;
Returns the name of the connection.
Since 2.6.9. See L.
=head3 client getredir
$r->client_getredir;
Returns the client ID to which the connection's tracking notifications are redirected.
Since 6.0.0. See L.
=head3 client help
$r->client_help;
Returns helpful text about the different subcommands.
Since 5.0.0. See L.
=head3 client id
$r->client_id;
Returns the unique client ID of the connection.
Since 5.0.0. See L.
=head3 client info
$r->client_info;
Returns information about the connection.
Since 6.2.0. See L.
=head3 client kill
$r->client_kill(...);
Terminates open connections.
Since 2.4.0. See L.
=head3 client list
$r->client_list(...);
Lists open connections.
Since 2.4.0. See L.
=head3 client no-evict
$r->client_no_evict(...);
Sets the client eviction mode of the connection.
Since 7.0.0. See L.
=head3 client no-touch
$r->client_no_touch(...);
Controls whether commands sent by the client affect the LRU/LFU of accessed keys.
Since 7.2.0. See L.
=head3 client pause
$r->client_pause(...);
Suspends commands processing.
Since 3.0.0. See L.
=head3 client reply
$r->client_reply(...);
Instructs the server whether to reply to commands.
Since 3.2.0. See L.
=head3 client setinfo
$r->client_setinfo(...);
Sets information specific to the client or connection.
Since 7.2.0. See L.
=head3 client setname
$r->client_setname($connection_name);
Sets the connection name.
Since 2.6.9. See L.
=head3 client tracking
$r->client_tracking(...);
Controls server-assisted client-side caching for the connection.
Since 6.0.0. See L.
=head3 client trackinginfo
$r->client_trackinginfo;
Returns information about server-assisted client-side caching for the connection.
Since 6.2.0. See L.
=head3 client unblock
$r->client_unblock(...);
Unblocks a client blocked by a blocking command from a different connection.
Since 5.0.0. See L.
=head3 client unpause
$r->client_unpause;
Resumes processing commands from paused clients.
Since 6.2.0. See L.
=head3 echo
$r->echo($message);
Returns the given string.
Since 1.0.0. See L.
=head3 hello
$r->hello(...);
Handshakes with the Redis server.
Since 6.0.0. See L.
=head3 ping
$r->ping(...);
Returns the server's liveliness response.
Since 1.0.0. See L.
=head3 quit
$r->quit(...);
Closes the connection.
Since 1.0.0. See L.
=head3 reset
$r->reset;
Resets the connection.
Since 6.2.0. See L.
=head3 select
$r->select($index);
Changes the selected database.
Since 1.0.0. See L.
=head2 generic
=head3 copy
$r->copy(...);
Copies the value of a key to a new key.
Since 6.2.0. See L.
=head3 del
$r->del(@keys);
Deletes one or more keys.
Since 1.0.0. See L.
=head3 dump
$r->dump($key);
Returns a serialized representation of the value stored at a key.
Since 2.6.0. See L.
=head3 exists
$r->exists(@keys);
Determines whether one or more keys exist.
Since 1.0.0. See L.
=head3 expire
$r->expire(...);
Sets the expiration time of a key in seconds.
Since 1.0.0. See L.
=head3 expireat
$r->expireat(...);
Sets the expiration time of a key to a Unix timestamp.
Since 1.2.0. See L.
=head3 expiretime
$r->expiretime($key);
Returns the expiration time of a key as a Unix timestamp.
Since 7.0.0. See L.
=head3 keys
$r->keys($pattern);
Returns all key names that match a pattern.
Since 1.0.0. See L.
=head3 migrate
$r->migrate(...);
Atomically transfers a key from one Redis instance to another.
Since 2.6.0. See L.
=head3 move
$r->move($key, $db);
Moves a key to another database.
Since 1.0.0. See L.
=head3 object encoding
$r->object_encoding($key);
Returns the internal encoding of a Redis object.
Since 2.2.3. See L.
=head3 object freq
$r->object_freq($key);
Returns the logarithmic access frequency counter of a Redis object.
Since 4.0.0. See L.
=head3 object help
$r->object_help;
Returns helpful text about the different subcommands.
Since 6.2.0. See L.
=head3 object idletime
$r->object_idletime($key);
Returns the time since the last access to a Redis object.
Since 2.2.3. See L.
=head3 object refcount
$r->object_refcount($key);
Returns the reference count of a value of a key.
Since 2.2.3. See L.
=head3 persist
$r->persist($key);
Removes the expiration time of a key.
Since 2.2.0. See L.
=head3 pexpire
$r->pexpire(...);
Sets the expiration time of a key in milliseconds.
Since 2.6.0. See L.
=head3 pexpireat
$r->pexpireat(...);
Sets the expiration time of a key to a Unix milliseconds timestamp.
Since 2.6.0. See L.
=head3 pexpiretime
$r->pexpiretime($key);
Returns the expiration time of a key as a Unix milliseconds timestamp.
Since 7.0.0. See L.
=head3 pttl
$r->pttl($key);
Returns the expiration time in milliseconds of a key.
Since 2.6.0. See L.
=head3 randomkey
$r->randomkey;
Returns a random key name from the database.
Since 1.0.0. See L.
=head3 rename
$r->rename($key, $newkey);
Renames a key and overwrites the destination.
Since 1.0.0. See L.
=head3 renamenx
$r->renamenx($key, $newkey);
Renames a key only when the target key name doesn't exist.
Since 1.0.0. See L.
=head3 restore
$r->restore(...);
Creates a key from the serialized representation of a value.
Since 2.6.0. See L.
=head3 scan
$r->scan(...);
Iterates over the key names in the database.
Since 2.8.0. See L.
=head3 sort
$r->sort(...);
Sorts the elements in a list, a set, or a sorted set, optionally storing the result.
Since 1.0.0. See L.
=head3 sort_ro
$r->sort_ro(...);
Returns the sorted elements of a list, a set, or a sorted set.
Since 7.0.0. See L.
=head3 touch
$r->touch(@keys);
Returns the number of existing keys out of those specified after updating the time they were last accessed.
Since 3.2.1. See L.
=head3 ttl
$r->ttl($key);
Returns the expiration time in seconds of a key.
Since 1.0.0. See L.
=head3 type
$r->type($key);
Determines the type of value stored at a key.
Since 1.0.0. See L.
=head3 unlink
$r->unlink(@keys);
Asynchronously deletes one or more keys.
Since 4.0.0. See L.
=head3 wait
$r->wait($numreplicas, $timeout);
Blocks until the asynchronous replication of all preceding write commands sent by the connection is completed.
Since 3.0.0. See L.
=head3 waitaof
$r->waitaof($numlocal, $numreplicas, $timeout);
Blocks until all of the preceding write commands sent by the connection are written to the append-only file of the master and/or replicas.
Since 7.2.0. See L.
=head2 geo
=head3 geoadd
$r->geoadd(...);
Adds one or more members to a geospatial index. The key is created if it doesn't exist.
Since 3.2.0. See L.
=head3 geodist
$r->geodist(...);
Returns the distance between two members of a geospatial index.
Since 3.2.0. See L.
=head3 geohash
$r->geohash(...);
Returns members from a geospatial index as geohash strings.
Since 3.2.0. See L.
=head3 geopos
$r->geopos(...);
Returns the longitude and latitude of members from a geospatial index.
Since 3.2.0. See L.
=head3 georadius
$r->georadius(...);
Queries a geospatial index for members within a distance from a coordinate, optionally stores the result.
Since 3.2.0. See L.
=head3 georadius_ro
$r->georadius_ro(...);
Returns members from a geospatial index that are within a distance from a coordinate.
Since 3.2.10. See L.
=head3 georadiusbymember
$r->georadiusbymember(...);
Queries a geospatial index for members within a distance from a member, optionally stores the result.
Since 3.2.0. See L.
=head3 georadiusbymember_ro
$r->georadiusbymember_ro(...);
Returns members from a geospatial index that are within a distance from a member.
Since 3.2.10. See L.
=head3 geosearch
$r->geosearch(...);
Queries a geospatial index for members inside an area of a box or a circle.
Since 6.2.0. See L.
=head3 geosearchstore
$r->geosearchstore(...);
Queries a geospatial index for members inside an area of a box or a circle, optionally stores the result.
Since 6.2.0. See L.
=head2 hash
=head3 hdel
$r->hdel($key, @fields);
Deletes one or more fields and their values from a hash. Deletes the hash if no fields remain.
Since 2.0.0. See L.
=head3 hexists
$r->hexists($key, $field);
Determines whether a field exists in a hash.
Since 2.0.0. See L.
=head3 hget
$r->hget($key, $field);
Returns the value of a field in a hash.
Since 2.0.0. See L.
=head3 hgetall
$r->hgetall($key);
Returns all fields and values in a hash.
Since 2.0.0. See L.
=head3 hincrby
$r->hincrby($key, $field, $increment);
Increments the integer value of a field in a hash by a number. Uses 0 as initial value if the field doesn't exist.
Since 2.0.0. See L.
=head3 hincrbyfloat
$r->hincrbyfloat($key, $field, $increment);
Increments the floating point value of a field by a number. Uses 0 as initial value if the field doesn't exist.
Since 2.6.0. See L.
=head3 hkeys
$r->hkeys($key);
Returns all fields in a hash.
Since 2.0.0. See L.
=head3 hlen
$r->hlen($key);
Returns the number of fields in a hash.
Since 2.0.0. See L.
=head3 hmget
$r->hmget($key, @fields);
Returns the values of all fields in a hash.
Since 2.0.0. See L.
=head3 hmset
$r->hmset(...);
Sets the values of multiple fields.
Since 2.0.0. See L.
=head3 hrandfield
$r->hrandfield(...);
Returns one or more random fields from a hash.
Since 6.2.0. See L.
=head3 hscan
$r->hscan(...);
Iterates over fields and values of a hash.
Since 2.8.0. See L.
=head3 hset
$r->hset(...);
Creates or modifies the value of a field in a hash.
Since 2.0.0. See L.
=head3 hsetnx
$r->hsetnx($key, $field, $value);
Sets the value of a field in a hash only when the field doesn't exist.
Since 2.0.0. See L.
=head3 hstrlen
$r->hstrlen($key, $field);
Returns the length of the value of a field.
Since 3.2.0. See L.
=head3 hvals
$r->hvals($key);
Returns all values in a hash.
Since 2.0.0. See L.
=head2 hyperloglog
=head3 pfadd
$r->pfadd(...);
Adds elements to a HyperLogLog key. Creates the key if it doesn't exist.
Since 2.8.9. See L.
=head3 pfcount
$r->pfcount(@keys);
Returns the approximated cardinality of the set(s) observed by the HyperLogLog key(s).
Since 2.8.9. See L.
=head3 pfdebug
$r->pfdebug($subcommand, $key);
Internal commands for debugging HyperLogLog values.
Since 2.8.9. See L.
=head3 pfmerge
$r->pfmerge(...);
Merges one or more HyperLogLog values into a single key.
Since 2.8.9. See L.
=head3 pfselftest
$r->pfselftest;
An internal command for testing HyperLogLog values.
Since 2.8.9. See L.
=head2 json
=head3 json.arrappend
$r->json_arrappend(...);
Append one or more json values into the array at path after the last element in it.
Since 1.0.0. See L.
=head3 json.arrindex
$r->json_arrindex(...);
Returns the index of the first occurrence of a JSON scalar value in the array at path
Since 1.0.0. See L.
=head3 json.arrinsert
$r->json_arrinsert($key, $path, $index, @values);
Inserts the JSON scalar(s) value at the specified index in the array at path
Since 1.0.0. See L.
=head3 json.arrlen
$r->json_arrlen(...);
Returns the length of the array at path
Since 1.0.0. See L.
=head3 json.arrpop
$r->json_arrpop(...);
Removes and returns the element at the specified index in the array at path
Since 1.0.0. See L.
=head3 json.arrtrim
$r->json_arrtrim($key, $path, $start, $stop);
Trims the array at path to contain only the specified inclusive range of indices from start to stop
Since 1.0.0. See L.
=head3 json.clear
$r->json_clear(...);
Clears all values from an array or an object and sets numeric values to `0`
Since 2.0.0. See L.
=head3 json.debug
$r->json_debug(...);
Debugging container command
Since 1.0.0. See L.
=head3 json.debug help
$r->json_debug_help(...);
Shows helpful information
Since 1.0.0. See L.
=head3 json.debug memory
$r->json_debug_memory(...);
Reports the size in bytes of a key
Since 1.0.0. See L.
=head3 json.del
$r->json_del(...);
Deletes a value
Since 1.0.0. See L.
=head3 json.forget
$r->json_forget(...);
Deletes a value
Since 1.0.0. See L.
=head3 json.get
$r->json_get(...);
Gets the value at one or more paths in JSON serialized form
Since 1.0.0. See L.
=head3 json.merge
$r->json_merge($key, $path, $value);
Merges a given JSON value into matching paths. Consequently, JSON values at matching paths are updated, deleted, or expanded with new children
Since 2.6.0. See L.
=head3 json.mget
$r->json_mget(@keys, $path);
Returns the values at a path from one or more keys
Since 1.0.0. See L.
=head3 json.mset
$r->json_mset(...);
Sets or updates the JSON value of one or more keys
Since 2.6.0. See L.
=head3 json.numincrby
$r->json_numincrby($key, $path, $value);
Increments the numeric value at path by a value
Since 1.0.0. See L.
=head3 json.nummultby
$r->json_nummultby($key, $path, $value);
Multiplies the numeric value at path by a value
Since 1.0.0. See L.
=head3 json.objkeys
$r->json_objkeys(...);
Returns the JSON keys of the object at path
Since 1.0.0. See L.
=head3 json.objlen
$r->json_objlen(...);
Returns the number of keys of the object at path
Since 1.0.0. See L.
=head3 json.resp
$r->json_resp(...);
Returns the JSON value at path in Redis Serialization Protocol (RESP)
Since 1.0.0. See L.
=head3 json.set
$r->json_set(...);
Sets or updates the JSON value at a path
Since 1.0.0. See L.
=head3 json.strappend
$r->json_strappend(...);
Appends a string to a JSON string value at path
Since 1.0.0. See L.
=head3 json.strlen
$r->json_strlen(...);
Returns the length of the JSON String at path in key
Since 1.0.0. See L.
=head3 json.toggle
$r->json_toggle($key, $path);
Toggles a boolean value
Since 2.0.0. See L.
=head3 json.type
$r->json_type(...);
Returns the type of the JSON value at path
Since 1.0.0. See L.
=head2 list
=head3 blmove
$r->blmove(...);
Pops an element from a list, pushes it to another list and returns it. Blocks until an element is available otherwise. Deletes the list if the last element was moved.
Since 6.2.0. See L.
=head3 blmpop
$r->blmpop(...);
Pops the first element from one of multiple lists. Blocks until an element is available otherwise. Deletes the list if the last element was popped.
Since 7.0.0. See L.
=head3 blpop
$r->blpop(@keys, $timeout);
Removes and returns the first element in a list. Blocks until an element is available otherwise. Deletes the list if the last element was popped.
Since 2.0.0. See L.
=head3 brpop
$r->brpop(@keys, $timeout);
Removes and returns the last element in a list. Blocks until an element is available otherwise. Deletes the list if the last element was popped.
Since 2.0.0. See L.
=head3 brpoplpush
$r->brpoplpush($source, $destination, $timeout);
Pops an element from a list, pushes it to another list and returns it. Block until an element is available otherwise. Deletes the list if the last element was popped.
Since 2.2.0. See L.
=head3 lindex
$r->lindex($key, $index);
Returns an element from a list by its index.
Since 1.0.0. See L.
=head3 linsert
$r->linsert(...);
Inserts an element before or after another element in a list.
Since 2.2.0. See L.
=head3 llen
$r->llen($key);
Returns the length of a list.
Since 1.0.0. See L.
=head3 lmove
$r->lmove(...);
Returns an element after popping it from one list and pushing it to another. Deletes the list if the last element was moved.
Since 6.2.0. See L.
=head3 lmpop
$r->lmpop(...);
Returns multiple elements from a list after removing them. Deletes the list if the last element was popped.
Since 7.0.0. See L.
=head3 lpop
$r->lpop(...);
Returns the first elements in a list after removing it. Deletes the list if the last element was popped.
Since 1.0.0. See L.
=head3 lpos
$r->lpos(...);
Returns the index of matching elements in a list.
Since 6.0.6. See L.
=head3 lpush
$r->lpush($key, @elements);
Prepends one or more elements to a list. Creates the key if it doesn't exist.
Since 1.0.0. See L.
=head3 lpushx
$r->lpushx($key, @elements);
Prepends one or more elements to a list only when the list exists.
Since 2.2.0. See L.
=head3 lrange
$r->lrange($key, $start, $stop);
Returns a range of elements from a list.
Since 1.0.0. See L.
=head3 lrem
$r->lrem($key, $count, $element);
Removes elements from a list. Deletes the list if the last element was removed.
Since 1.0.0. See L.
=head3 lset
$r->lset($key, $index, $element);
Sets the value of an element in a list by its index.
Since 1.0.0. See L.
=head3 ltrim
$r->ltrim($key, $start, $stop);
Removes elements from both ends a list. Deletes the list if all elements were trimmed.
Since 1.0.0. See L.
=head3 rpop
$r->rpop(...);
Returns and removes the last elements of a list. Deletes the list if the last element was popped.
Since 1.0.0. See L.
=head3 rpoplpush
$r->rpoplpush($source, $destination);
Returns the last element of a list after removing and pushing it to another list. Deletes the list if the last element was popped.
Since 1.2.0. See L.
=head3 rpush
$r->rpush($key, @elements);
Appends one or more elements to a list. Creates the key if it doesn't exist.
Since 1.0.0. See L.
=head3 rpushx
$r->rpushx($key, @elements);
Appends an element to a list only when the list exists.
Since 2.2.0. See L.
=head2 pubsub
=head3 psubscribe
$r->psubscribe(@patterns);
Listens for messages published to channels that match one or more patterns.
Since 2.0.0. See L.
=head3 publish
$r->publish($channel, $message);
Posts a message to a channel.
Since 2.0.0. See L.
=head3 pubsub channels
$r->pubsub_channels(...);
Returns the active channels.
Since 2.8.0. See L.
=head3 pubsub help
$r->pubsub_help;
Returns helpful text about the different subcommands.
Since 6.2.0. See L.
=head3 pubsub numpat
$r->pubsub_numpat;
Returns a count of unique pattern subscriptions.
Since 2.8.0. See L.
=head3 pubsub numsub
$r->pubsub_numsub(...);
Returns a count of subscribers to channels.
Since 2.8.0. See L.
=head3 pubsub shardchannels
$r->pubsub_shardchannels(...);
Returns the active shard channels.
Since 7.0.0. See L.
=head3 pubsub shardnumsub
$r->pubsub_shardnumsub(...);
Returns the count of subscribers of shard channels.
Since 7.0.0. See L.
=head3 punsubscribe
$r->punsubscribe(...);
Stops listening to messages published to channels that match one or more patterns.
Since 2.0.0. See L.
=head3 spublish
$r->spublish($shardchannel, $message);
Post a message to a shard channel
Since 7.0.0. See L.
=head3 ssubscribe
$r->ssubscribe(@shardchannels);
Listens for messages published to shard channels.
Since 7.0.0. See L.
=head3 subscribe
$r->subscribe(@channels);
Listens for messages published to channels.
Since 2.0.0. See L.
=head3 sunsubscribe
$r->sunsubscribe(...);
Stops listening to messages posted to shard channels.
Since 7.0.0. See L.
=head3 unsubscribe
$r->unsubscribe(...);
Stops listening to messages posted to channels.
Since 2.0.0. See L.
=head2 scripting
=head3 eval
$r->eval(...);
Executes a server-side Lua script.
Since 2.6.0. See L.
=head3 eval_ro
$r->eval_ro(...);
Executes a read-only server-side Lua script.
Since 7.0.0. See L.
=head3 evalsha
$r->evalsha(...);
Executes a server-side Lua script by SHA1 digest.
Since 2.6.0. See L.
=head3 evalsha_ro
$r->evalsha_ro(...);
Executes a read-only server-side Lua script by SHA1 digest.
Since 7.0.0. See L.
=head3 fcall
$r->fcall(...);
Invokes a function.
Since 7.0.0. See L.
=head3 fcall_ro
$r->fcall_ro(...);
Invokes a read-only function.
Since 7.0.0. See L.
=head3 function delete
$r->function_delete($library_name);
Deletes a library and its functions.
Since 7.0.0. See L.
=head3 function dump
$r->function_dump;
Dumps all libraries into a serialized binary payload.
Since 7.0.0. See L.
=head3 function flush
$r->function_flush(...);
Deletes all libraries and functions.
Since 7.0.0. See L.
=head3 function help
$r->function_help;
Returns helpful text about the different subcommands.
Since 7.0.0. See L.
=head3 function kill
$r->function_kill;
Terminates a function during execution.
Since 7.0.0. See L.
=head3 function list
$r->function_list(...);
Returns information about all libraries.
Since 7.0.0. See L.
=head3 function load
$r->function_load(...);
Creates a library.
Since 7.0.0. See L.
=head3 function restore
$r->function_restore(...);
Restores all libraries from a payload.
Since 7.0.0. See L.
=head3 function stats
$r->function_stats;
Returns information about a function during execution.
Since 7.0.0. See L.
=head3 script debug
$r->script_debug(...);
Sets the debug mode of server-side Lua scripts.
Since 3.2.0. See L.
=head3 script exists
$r->script_exists(@sha1s);
Determines whether server-side Lua scripts exist in the script cache.
Since 2.6.0. See L.
=head3 script flush
$r->script_flush(...);
Removes all server-side Lua scripts from the script cache.
Since 2.6.0. See L.
=head3 script help
$r->script_help;
Returns helpful text about the different subcommands.
Since 5.0.0. See L.
=head3 script kill
$r->script_kill;
Terminates a server-side Lua script during execution.
Since 2.6.0. See L.
=head3 script load
$r->script_load($script);
Loads a server-side Lua script to the script cache.
Since 2.6.0. See L.
=head2 server
=head3 acl cat
$r->acl_cat(...);
Lists the ACL categories, or the commands inside a category.
Since 6.0.0. See L.
=head3 acl deluser
$r->acl_deluser(@usernames);
Deletes ACL users, and terminates their connections.
Since 6.0.0. See L.
=head3 acl dryrun
$r->acl_dryrun(...);
Simulates the execution of a command by a user, without executing the command.
Since 7.0.0. See L.
=head3 acl genpass
$r->acl_genpass(...);
Generates a pseudorandom, secure password that can be used to identify ACL users.
Since 6.0.0. See L.
=head3 acl getuser
$r->acl_getuser($username);
Lists the ACL rules of a user.
Since 6.0.0. See L.
=head3 acl help
$r->acl_help;
Returns helpful text about the different subcommands.
Since 6.0.0. See L.
=head3 acl list
$r->acl_list;
Dumps the effective rules in ACL file format.
Since 6.0.0. See L.
=head3 acl load
$r->acl_load;
Reloads the rules from the configured ACL file.
Since 6.0.0. See L.
=head3 acl log
$r->acl_log(...);
Lists recent security events generated due to ACL rules.
Since 6.0.0. See L.
=head3 acl save
$r->acl_save;
Saves the effective ACL rules in the configured ACL file.
Since 6.0.0. See L.
=head3 acl setuser
$r->acl_setuser(...);
Creates and modifies an ACL user and its rules.
Since 6.0.0. See L.
=head3 acl users
$r->acl_users;
Lists all ACL users.
Since 6.0.0. See L.
=head3 acl whoami
$r->acl_whoami;
Returns the authenticated username of the current connection.
Since 6.0.0. See L.
=head3 bgrewriteaof
$r->bgrewriteaof;
Asynchronously rewrites the append-only file to disk.
Since 1.0.0. See L.
=head3 bgsave
$r->bgsave(...);
Asynchronously saves the database(s) to disk.
Since 1.0.0. See L.
=head3 command
$r->command(...);
Returns detailed information about all commands.
Since 2.8.13. See L.
=head3 command count
$r->command_count;
Returns a count of commands.
Since 2.8.13. See L.
=head3 command docs
$r->command_docs(...);
Returns documentary information about one, multiple or all commands.
Since 7.0.0. See L.
=head3 command getkeys
$r->command_getkeys(...);
Extracts the key names from an arbitrary command.
Since 2.8.13. See L.
=head3 command getkeysandflags
$r->command_getkeysandflags(...);
Extracts the key names and access flags for an arbitrary command.
Since 7.0.0. See L.
=head3 command help
$r->command_help;
Returns helpful text about the different subcommands.
Since 5.0.0. See L.
=head3 command info
$r->command_info(...);
Returns information about one, multiple or all commands.
Since 2.8.13. See L.
=head3 command list
$r->command_list(...);
Returns a list of command names.
Since 7.0.0. See L.
=head3 config get
$r->config_get(@parameters);
Returns the effective values of configuration parameters.
Since 2.0.0. See L.
=head3 config help
$r->config_help;
Returns helpful text about the different subcommands.
Since 5.0.0. See L.
=head3 config resetstat
$r->config_resetstat;
Resets the server's statistics.
Since 2.0.0. See L.
=head3 config rewrite
$r->config_rewrite;
Persists the effective configuration to file.
Since 2.8.0. See L.
=head3 config set
$r->config_set(...);
Sets configuration parameters in-flight.
Since 2.0.0. See L.
=head3 dbsize
$r->dbsize;
Returns the number of keys in the database.
Since 1.0.0. See L.
=head3 failover
$r->failover(...);
Starts a coordinated failover from a server to one of its replicas.
Since 6.2.0. See L.
=head3 flushall
$r->flushall(...);
Removes all keys from all databases.
Since 1.0.0. See L.
=head3 flushdb
$r->flushdb(...);
Remove all keys from the current database.
Since 1.0.0. See L.
=head3 info
$r->info(...);
Returns information and statistics about the server.
Since 1.0.0. See L.
=head3 lastsave
$r->lastsave;
Returns the Unix timestamp of the last successful save to disk.
Since 1.0.0. See L.
=head3 latency doctor
$r->latency_doctor;
Returns a human-readable latency analysis report.
Since 2.8.13. See L.
=head3 latency graph
$r->latency_graph($event);
Returns a latency graph for an event.
Since 2.8.13. See L.
=head3 latency help
$r->latency_help;
Returns helpful text about the different subcommands.
Since 2.8.13. See L.
=head3 latency histogram
$r->latency_histogram(...);
Returns the cumulative distribution of latencies of a subset or all commands.
Since 7.0.0. See L.
=head3 latency history
$r->latency_history($event);
Returns timestamp-latency samples for an event.
Since 2.8.13. See L.
=head3 latency latest
$r->latency_latest;
Returns the latest latency samples for all events.
Since 2.8.13. See L.
=head3 latency reset
$r->latency_reset(...);
Resets the latency data for one or more events.
Since 2.8.13. See L.
=head3 lolwut
$r->lolwut(...);
Displays computer art and the Redis version
Since 5.0.0. See L.
=head3 memory doctor
$r->memory_doctor;
Outputs a memory problems report.
Since 4.0.0. See L.
=head3 memory help
$r->memory_help;
Returns helpful text about the different subcommands.
Since 4.0.0. See L.
=head3 memory malloc-stats
$r->memory_malloc_stats;
Returns the allocator statistics.
Since 4.0.0. See L.
=head3 memory purge
$r->memory_purge;
Asks the allocator to release memory.
Since 4.0.0. See L.
=head3 memory stats
$r->memory_stats;
Returns details about memory usage.
Since 4.0.0. See L.
=head3 memory usage
$r->memory_usage(...);
Estimates the memory usage of a key.
Since 4.0.0. See L.
=head3 module help
$r->module_help;
Returns helpful text about the different subcommands.
Since 5.0.0. See L.
=head3 module list
$r->module_list;
Returns all loaded modules.
Since 4.0.0. See L.
=head3 module load
$r->module_load(...);
Loads a module.
Since 4.0.0. See L.
=head3 module loadex
$r->module_loadex(...);
Loads a module using extended parameters.
Since 7.0.0. See L.
=head3 module unload
$r->module_unload($name);
Unloads a module.
Since 4.0.0. See L.
=head3 monitor
$r->monitor;
Listens for all requests received by the server in real-time.
Since 1.0.0. See L.
=head3 psync
$r->psync($replicationid, $offset);
An internal command used in replication.
Since 2.8.0. See L.
=head3 replconf
$r->replconf(...);
An internal command for configuring the replication stream.
Since 3.0.0. See L.
=head3 replicaof
$r->replicaof(...);
Configures a server as replica of another, or promotes it to a master.
Since 5.0.0. See L.
=head3 restore-asking
$r->restore_asking(...);
An internal command for migrating keys in a cluster.
Since 3.0.0. See L.
=head3 role
$r->role;
Returns the replication role.
Since 2.8.12. See L.
=head3 save
$r->save;
Synchronously saves the database(s) to disk.
Since 1.0.0. See L.
=head3 shutdown
$r->shutdown(...);
Synchronously saves the database(s) to disk and shuts down the Redis server.
Since 1.0.0. See L.
=head3 slaveof
$r->slaveof(...);
Sets a Redis server as a replica of another, or promotes it to being a master.
Since 1.0.0. See L.
=head3 slowlog get
$r->slowlog_get(...);
Returns the slow log's entries.
Since 2.2.12. See L.
=head3 slowlog help
$r->slowlog_help;
Show helpful text about the different subcommands
Since 6.2.0. See L.
=head3 slowlog len
$r->slowlog_len;
Returns the number of entries in the slow log.
Since 2.2.12. See L.
=head3 slowlog reset
$r->slowlog_reset;
Clears all entries from the slow log.
Since 2.2.12. See L.
=head3 swapdb
$r->swapdb($index1, $index2);
Swaps two Redis databases.
Since 4.0.0. See L.
=head3 sync
$r->sync;
An internal command used in replication.
Since 1.0.0. See L.
=head3 time
$r->time;
Returns the server time.
Since 2.6.0. See L.
=head2 set
=head3 sadd
$r->sadd($key, @members);
Adds one or more members to a set. Creates the key if it doesn't exist.
Since 1.0.0. See L.
=head3 scard
$r->scard($key);
Returns the number of members in a set.
Since 1.0.0. See L.
=head3 sdiff
$r->sdiff(@keys);
Returns the difference of multiple sets.
Since 1.0.0. See L.
=head3 sdiffstore
$r->sdiffstore($destination, @keys);
Stores the difference of multiple sets in a key.
Since 1.0.0. See L.
=head3 sinter
$r->sinter(@keys);
Returns the intersect of multiple sets.
Since 1.0.0. See L.
=head3 sintercard
$r->sintercard(...);
Returns the number of members of the intersect of multiple sets.
Since 7.0.0. See L.
=head3 sinterstore
$r->sinterstore($destination, @keys);
Stores the intersect of multiple sets in a key.
Since 1.0.0. See L.
=head3 sismember
$r->sismember($key, $member);
Determines whether a member belongs to a set.
Since 1.0.0. See L.
=head3 smembers
$r->smembers($key);
Returns all members of a set.
Since 1.0.0. See L.
=head3 smismember
$r->smismember($key, @members);
Determines whether multiple members belong to a set.
Since 6.2.0. See L.
=head3 smove
$r->smove($source, $destination, $member);
Moves a member from one set to another.
Since 1.0.0. See L.
=head3 spop
$r->spop(...);
Returns one or more random members from a set after removing them. Deletes the set if the last member was popped.
Since 1.0.0. See L.
=head3 srandmember
$r->srandmember(...);
Get one or multiple random members from a set
Since 1.0.0. See L.
=head3 srem
$r->srem($key, @members);
Removes one or more members from a set. Deletes the set if the last member was removed.
Since 1.0.0. See L.
=head3 sscan
$r->sscan(...);
Iterates over members of a set.
Since 2.8.0. See L.
=head3 sunion
$r->sunion(@keys);
Returns the union of multiple sets.
Since 1.0.0. See L.
=head3 sunionstore
$r->sunionstore($destination, @keys);
Stores the union of multiple sets in a key.
Since 1.0.0. See L.
=head2 sorted_set
=head3 bzmpop
$r->bzmpop(...);
Removes and returns a member by score from one or more sorted sets. Blocks until a member is available otherwise. Deletes the sorted set if the last element was popped.
Since 7.0.0. See L.
=head3 bzpopmax
$r->bzpopmax(@keys, $timeout);
Removes and returns the member with the highest score from one or more sorted sets. Blocks until a member available otherwise. Deletes the sorted set if the last element was popped.
Since 5.0.0. See L.
=head3 bzpopmin
$r->bzpopmin(@keys, $timeout);
Removes and returns the member with the lowest score from one or more sorted sets. Blocks until a member is available otherwise. Deletes the sorted set if the last element was popped.
Since 5.0.0. See L.
=head3 zadd
$r->zadd(...);
Adds one or more members to a sorted set, or updates their scores. Creates the key if it doesn't exist.
Since 1.2.0. See L.
=head3 zcard
$r->zcard($key);
Returns the number of members in a sorted set.
Since 1.2.0. See L.
=head3 zcount
$r->zcount($key, $min, $max);
Returns the count of members in a sorted set that have scores within a range.
Since 2.0.0. See L.
=head3 zdiff
$r->zdiff(...);
Returns the difference between multiple sorted sets.
Since 6.2.0. See L.
=head3 zdiffstore
$r->zdiffstore($destination, $numkeys, @keys);
Stores the difference of multiple sorted sets in a key.
Since 6.2.0. See L.
=head3 zincrby
$r->zincrby($key, $increment, $member);
Increments the score of a member in a sorted set.
Since 1.2.0. See L.
=head3 zinter
$r->zinter(...);
Returns the intersect of multiple sorted sets.
Since 6.2.0. See L.
=head3 zintercard
$r->zintercard(...);
Returns the number of members of the intersect of multiple sorted sets.
Since 7.0.0. See L.
=head3 zinterstore
$r->zinterstore(...);
Stores the intersect of multiple sorted sets in a key.
Since 2.0.0. See L.
=head3 zlexcount
$r->zlexcount($key, $min, $max);
Returns the number of members in a sorted set within a lexicographical range.
Since 2.8.9. See L.
=head3 zmpop
$r->zmpop(...);
Returns the highest- or lowest-scoring members from one or more sorted sets after removing them. Deletes the sorted set if the last member was popped.
Since 7.0.0. See L.
=head3 zmscore
$r->zmscore($key, @members);
Returns the score of one or more members in a sorted set.
Since 6.2.0. See L.
=head3 zpopmax
$r->zpopmax(...);
Returns the highest-scoring members from a sorted set after removing them. Deletes the sorted set if the last member was popped.
Since 5.0.0. See L.
=head3 zpopmin
$r->zpopmin(...);
Returns the lowest-scoring members from a sorted set after removing them. Deletes the sorted set if the last member was popped.
Since 5.0.0. See L.
=head3 zrandmember
$r->zrandmember(...);
Returns one or more random members from a sorted set.
Since 6.2.0. See L.
=head3 zrange
$r->zrange(...);
Returns members in a sorted set within a range of indexes.
Since 1.2.0. See L.
=head3 zrangebylex
$r->zrangebylex(...);
Returns members in a sorted set within a lexicographical range.
Since 2.8.9. See L.
=head3 zrangebyscore
$r->zrangebyscore(...);
Returns members in a sorted set within a range of scores.
Since 1.0.5. See L.
=head3 zrangestore
$r->zrangestore(...);
Stores a range of members from sorted set in a key.
Since 6.2.0. See L.
=head3 zrank
$r->zrank(...);
Returns the index of a member in a sorted set ordered by ascending scores.
Since 2.0.0. See L.
=head3 zrem
$r->zrem($key, @members);
Removes one or more members from a sorted set. Deletes the sorted set if all members were removed.
Since 1.2.0. See L.
=head3 zremrangebylex
$r->zremrangebylex($key, $min, $max);
Removes members in a sorted set within a lexicographical range. Deletes the sorted set if all members were removed.
Since 2.8.9. See L.
=head3 zremrangebyrank
$r->zremrangebyrank($key, $start, $stop);
Removes members in a sorted set within a range of indexes. Deletes the sorted set if all members were removed.
Since 2.0.0. See L.
=head3 zremrangebyscore
$r->zremrangebyscore($key, $min, $max);
Removes members in a sorted set within a range of scores. Deletes the sorted set if all members were removed.
Since 1.2.0. See L.
=head3 zrevrange
$r->zrevrange(...);
Returns members in a sorted set within a range of indexes in reverse order.
Since 1.2.0. See L.
=head3 zrevrangebylex
$r->zrevrangebylex(...);
Returns members in a sorted set within a lexicographical range in reverse order.
Since 2.8.9. See L.
=head3 zrevrangebyscore
$r->zrevrangebyscore(...);
Returns members in a sorted set within a range of scores in reverse order.
Since 2.2.0. See L.
=head3 zrevrank
$r->zrevrank(...);
Returns the index of a member in a sorted set ordered by descending scores.
Since 2.0.0. See L.
=head3 zscan
$r->zscan(...);
Iterates over members and scores of a sorted set.
Since 2.8.0. See L.
=head3 zscore
$r->zscore($key, $member);
Returns the score of a member in a sorted set.
Since 1.2.0. See L.
=head3 zunion
$r->zunion(...);
Returns the union of multiple sorted sets.
Since 6.2.0. See L.
=head3 zunionstore
$r->zunionstore(...);
Stores the union of multiple sorted sets in a key.
Since 2.0.0. See L.
=head2 stream
=head3 xack
$r->xack($key, $group, @ids);
Returns the number of messages that were successfully acknowledged by the consumer group member of a stream.
Since 5.0.0. See L.
=head3 xadd
$r->xadd(...);
Appends a new message to a stream. Creates the key if it doesn't exist.
Since 5.0.0. See L.
=head3 xautoclaim
$r->xautoclaim(...);
Changes, or acquires, ownership of messages in a consumer group, as if the messages were delivered to as consumer group member.
Since 6.2.0. See L.
=head3 xclaim
$r->xclaim(...);
Changes, or acquires, ownership of a message in a consumer group, as if the message was delivered a consumer group member.
Since 5.0.0. See L.
=head3 xdel
$r->xdel($key, @ids);
Returns the number of messages after removing them from a stream.
Since 5.0.0. See L.
=head3 xgroup create
$r->xgroup_create(...);
Creates a consumer group.
Since 5.0.0. See L.
=head3 xgroup createconsumer
$r->xgroup_createconsumer($key, $group, $consumer);
Creates a consumer in a consumer group.
Since 6.2.0. See L.
=head3 xgroup delconsumer
$r->xgroup_delconsumer($key, $group, $consumer);
Deletes a consumer from a consumer group.
Since 5.0.0. See L.
=head3 xgroup destroy
$r->xgroup_destroy($key, $group);
Destroys a consumer group.
Since 5.0.0. See L.
=head3 xgroup help
$r->xgroup_help;
Returns helpful text about the different subcommands.
Since 5.0.0. See L.
=head3 xgroup setid
$r->xgroup_setid(...);
Sets the last-delivered ID of a consumer group.
Since 5.0.0. See L.
=head3 xinfo consumers
$r->xinfo_consumers($key, $group);
Returns a list of the consumers in a consumer group.
Since 5.0.0. See L.
=head3 xinfo groups
$r->xinfo_groups($key);
Returns a list of the consumer groups of a stream.
Since 5.0.0. See L.
=head3 xinfo help
$r->xinfo_help;
Returns helpful text about the different subcommands.
Since 5.0.0. See L.
=head3 xinfo stream
$r->xinfo_stream(...);
Returns information about a stream.
Since 5.0.0. See L.
=head3 xlen
$r->xlen($key);
Return the number of messages in a stream.
Since 5.0.0. See L.
=head3 xpending
$r->xpending(...);
Returns the information and entries from a stream consumer group's pending entries list.
Since 5.0.0. See L.
=head3 xrange
$r->xrange(...);
Returns the messages from a stream within a range of IDs.
Since 5.0.0. See L.
=head3 xread
$r->xread(...);
Returns messages from multiple streams with IDs greater than the ones requested. Blocks until a message is available otherwise.
Since 5.0.0. See L.
=head3 xreadgroup
$r->xreadgroup(...);
Returns new or historical messages from a stream for a consumer in a group. Blocks until a message is available otherwise.
Since 5.0.0. See L.
=head3 xrevrange
$r->xrevrange(...);
Returns the messages from a stream within a range of IDs in reverse order.
Since 5.0.0. See L.
=head3 xsetid
$r->xsetid(...);
An internal command for replicating stream values.
Since 5.0.0. See L.
=head3 xtrim
$r->xtrim(...);
Deletes messages from the beginning of a stream.
Since 5.0.0. See L.
=head2 string
=head3 append
$r->append($key, $value);
Appends a string to the value of a key. Creates the key if it doesn't exist.
Since 2.0.0. See L.
=head3 decr
$r->decr($key);
Decrements the integer value of a key by one. Uses 0 as initial value if the key doesn't exist.
Since 1.0.0. See L.
=head3 decrby
$r->decrby($key, $decrement);
Decrements a number from the integer value of a key. Uses 0 as initial value if the key doesn't exist.
Since 1.0.0. See L.
=head3 get
$r->get($key);
Returns the string value of a key.
Since 1.0.0. See L.
=head3 getdel
$r->getdel($key);
Returns the string value of a key after deleting the key.
Since 6.2.0. See L.
=head3 getex
$r->getex(...);
Returns the string value of a key after setting its expiration time.
Since 6.2.0. See L.
=head3 getrange
$r->getrange($key, $start, $end);
Returns a substring of the string stored at a key.
Since 2.4.0. See L.
=head3 getset
$r->getset($key, $value);
Returns the previous string value of a key after setting it to a new value.
Since 1.0.0. See L.
=head3 incr
$r->incr($key);
Increments the integer value of a key by one. Uses 0 as initial value if the key doesn't exist.
Since 1.0.0. See L.
=head3 incrby
$r->incrby($key, $increment);
Increments the integer value of a key by a number. Uses 0 as initial value if the key doesn't exist.
Since 1.0.0. See L.
=head3 incrbyfloat
$r->incrbyfloat($key, $increment);
Increment the floating point value of a key by a number. Uses 0 as initial value if the key doesn't exist.
Since 2.6.0. See L.
=head3 lcs
$r->lcs(...);
Finds the longest common substring.
Since 7.0.0. See L.
=head3 mget
$r->mget(@keys);
Atomically returns the string values of one or more keys.
Since 1.0.0. See L.
=head3 mset
$r->mset(...);
Atomically creates or modifies the string values of one or more keys.
Since 1.0.1. See L.
=head3 msetnx
$r->msetnx(...);
Atomically modifies the string values of one or more keys only when all keys don't exist.
Since 1.0.1. See L.
=head3 psetex
$r->psetex($key, $milliseconds, $value);
Sets both string value and expiration time in milliseconds of a key. The key is created if it doesn't exist.
Since 2.6.0. See L.
=head3 set
$r->set(...);
Sets the string value of a key, ignoring its type. The key is created if it doesn't exist.
Since 1.0.0. See L.
=head3 setex
$r->setex($key, $seconds, $value);
Sets the string value and expiration time of a key. Creates the key if it doesn't exist.
Since 2.0.0. See L.
=head3 setnx
$r->setnx($key, $value);
Set the string value of a key only when the key doesn't exist.
Since 1.0.0. See L.
=head3 setrange
$r->setrange($key, $offset, $value);
Overwrites a part of a string value with another by an offset. Creates the key if it doesn't exist.
Since 2.2.0. See L.
=head3 strlen
$r->strlen($key);
Returns the length of a string value.
Since 2.2.0. See L.
=head3 substr
$r->substr($key, $start, $end);
Returns a substring from a string value.
Since 1.0.0. See L.
=head2 transactions
=head3 discard
$r->discard;
Discards a transaction.
Since 2.0.0. See L.
=head3 exec
$r->exec;
Executes all commands in a transaction.
Since 1.2.0. See L.
=head3 multi
$r->multi;
Starts a transaction.
Since 1.2.0. See L.
=head3 unwatch
$r->unwatch;
Forgets about watched keys of a transaction.
Since 2.2.0. See L.
=head3 watch
$r->watch(@keys);
Monitors changes to keys to determine the execution of a transaction.
Since 2.2.0. See L.
=head1 SEE ALSO
L