Redis Commands Cheat sheet

# Syntax redis-cli -u redis://host:port redis-cli -u redis://username:password@host:port # Examples redis-cli redis-cli -u redis://localhost:6379 redis-cli -u redis://myuser:mypassword@localhost:6379 # If you run Redis through Docker docker exec -it <container-id-or-name> redis-cli

Command	Syntax	Example	Output
SET	SET key value	`SET myKey "Hello"`	"OK"
Description: Set key to hold the string value. If key already holds a value, it is overwritten, regardless of its type.Time Complexity: O(1)
GET	GET key	`GET myKey`	"Hello"
Description: Get the string value of key. If the key does not exist the special value nil is returned.Time Complexity: O(1)
MGET	MGET key [key ...]	`MGET myKey nonExistentKey`	1) "Hello" 2) (nil)
Description: Returns the values of all specified keys. For every key that does not hold a string value or does not exist, the special value nil is returned.Time Complexity: O(N)
INCR	INCR key	`INCR myCounter`	(integer) 1
Description: Increments the number stored at key by one. If the key does not exist, it is set to 0 before performing the operation.Time Complexity: O(1)

Command

Syntax

Example

Output

SET

SET key value

SET myKey "Hello"

"OK"

Description: Set key to hold the string value. If key already holds a value, it is overwritten, regardless of its type.Time Complexity: O(1)

GET

GET key

GET myKey

"Hello"

Description: Get the string value of key. If the key does not exist the special value nil is returned.Time Complexity: O(1)

MGET

MGET key [key ...]

MGET myKey nonExistentKey

1) "Hello" 2) (nil)

Description: Returns the values of all specified keys. For every key that does not hold a string value or does not exist, the special value nil is returned.Time Complexity: O(N)

INCR

INCR key

INCR myCounter

(integer) 1

Description: Increments the number stored at key by one. If the key does not exist, it is set to 0 before performing the operation.Time Complexity: O(1)

Command	Syntax	Example	Output
KEYS	KEYS pattern	`KEYS my*`	1) "myKey" 2) "myCounter"
Description: Returns all keys matching pattern.Time Complexity: O(N)
EXISTS	EXISTS key [key ...]	`EXISTS myKey`	(integer) 1
Description: Checks if one or more keys exist.Time Complexity: O(N)
EXPIRE	EXPIRE key seconds	`EXPIRE myKey 120`	(integer) 1
Description: Set a timeout on a key.After the timeout has expired, the key will automatically be deleted.Time Complexity:O(1)
TTL	TTL key	`TTL myKey`	(integer) 113
Description: Returns the remaining time to live of a key that has a timeout.Time Complexity: O(1)
PERSIST	PERSIST key	`PERSIST myKey`	(integer) 1
Description: Removes the expiration from a key.Time Complexity:O(1)
SCAN	SCAN cursor [MATCH pattern] [COUNT count]	`SCAN 0 MATCH my* COUNT 2`	1) "3" 2) 1) "myCounter" 2) "myKey"
Description: Iterates the set of keys in the currently selected Redis database.Time Complexity: O(1) for every call. O(N) for a complete iteration.
DEL	DEL key [key ...]	`DEL myKey`	(integer) 1
Description: Removes the specified keys.Time Complexity: O(N)
INFO	INFO [section]	`INFO server INFO keyspace`	# Server redis_version:6.2.5 redis_git_sha1:00000000 redis_build_id:9893b2a-dirty redis_mode:standalone os:Linux 5.4.72-microsoft-standard-WSL2 x86_64 arch_bits:64 ... # Keyspace db0:keys=2,expires=0,avg_ttl=0
Description:Returns information and statistics about the server, with the different sections like - server, clients, memory, persistence, stats, replication, cpu, commandstats, latencystats, sentinel, cluster, modules, keyspace, errorstats.Time Complexity: O(1)

Command

Syntax

Example

Output

KEYS

KEYS pattern

KEYS my*

1) "myKey" 2) "myCounter"

Description: Returns all keys matching pattern.Time Complexity: O(N)

EXISTS

EXISTS key [key ...]

EXISTS myKey

(integer) 1

Description: Checks if one or more keys exist.Time Complexity: O(N)

EXPIRE

EXPIRE key seconds

EXPIRE myKey 120

(integer) 1

Description: Set a timeout on a key.After the timeout has expired, the key will automatically be deleted.Time Complexity:O(1)

TTL

TTL key

TTL myKey

(integer) 113

Description: Returns the remaining time to live of a key that has a timeout.Time Complexity: O(1)

PERSIST

PERSIST key

PERSIST myKey

(integer) 1

Description: Removes the expiration from a key.Time Complexity:O(1)

SCAN

SCAN cursor [MATCH pattern] [COUNT count]

SCAN 0 MATCH my* COUNT 2

1) "3" 2) 1) "myCounter" 2) "myKey"

Description: Iterates the set of keys in the currently selected Redis database.Time Complexity: O(1) for every call. O(N) for a complete iteration.

DEL

DEL key [key ...]

DEL myKey

(integer) 1

Description: Removes the specified keys.Time Complexity: O(N)

INFO

INFO [section]

INFO server
INFO keyspace

# Server

redis_version:6.2.5

redis_git_sha1:00000000

redis_build_id:9893b2a-dirty

redis_mode:standalone

os:Linux 5.4.72-microsoft-standard-WSL2 x86_64

arch_bits:64

...

# Keyspace db0:keys=2,expires=0,avg_ttl=0

Description:Returns information and statistics about the server, with the different sections like - server, clients, memory, persistence, stats, replication, cpu, commandstats, latencystats, sentinel, cluster, modules, keyspace, errorstats.Time Complexity: O(1)

Command	Syntax	Example	Output
HSET	HSET key field value [field value ...]	`HSET h_employee_profile:101 name "Nicol" age 33`	(integer) 2
Description: Sets the specified fields to their respective values in the hash stored at key.Time Complexity: O(N)
HGET	HGET key field	`HGET h_employee_profile:101 name`	"Nicol"
Description: Returns the value associated with field in the hash stored at key.Time Complexity: O(1)
HGETALL	HGETALL key	`HGETALL h_employee_profile:101`	1) "name" 2) "Nicol" 3) "age" 4) "33"
Description: Returns all fields and values of the hash stored at key.Time Complexity: O(N)
HMGET	HMGET key field1 [field2]	`HMGET h_employee_profile:101 name age`	1) "Nicol" 2) "33"
Description: Returns the values associated with the specified fields in the hash stored at key.Time Complexity: O(N)

Command

Syntax

Example

Output

HSET

HSET key field value [field value ...]

HSET h_employee_profile:101 name "Nicol" age 33

(integer) 2

Description: Sets the specified fields to their respective values in the hash stored at key.Time Complexity: O(N)

HGET

HGET key field

HGET h_employee_profile:101 name

"Nicol"

Description: Returns the value associated with field in the hash stored at key.Time Complexity: O(1)

HGETALL

HGETALL key

HGETALL h_employee_profile:101

1) "name" 2) "Nicol" 3) "age" 4) "33"

Description: Returns all fields and values of the hash stored at key.Time Complexity: O(N)

HMGET

HMGET key field1 [field2]

HMGET h_employee_profile:101 name age

1) "Nicol" 2) "33"

Description: Returns the values associated with the specified fields in the hash stored at key.Time Complexity: O(N)

Command	Syntax	Example	Output
XADD	XADD key field value [field value ...]	`XADD myStream * sensorId "1234" temperature "19.8"`	1518951480106-0
Description: Appends the specified stream entry to the stream at the specified key. Time Complexity: O(1) when adding a new entry.
XREAD	XREAD [COUNT count] [BLOCK milliseconds] STREAMS key [key ...] ID [ID ...]	`XREAD COUNT 2 STREAMS myStream 0`	1) 1) "myStream" 2) 1) 1) "1518951480106-0" 2) 1) "sensorId" 2) "1234" 3) "temperature" 4) "19.8"
Description: Read data from one or multiple streams, only returning entries with an ID greater than the last received ID reported by the caller.
XRANGE	XRANGE key start end [COUNT count]	`XRANGE myStream 1518951480106-0 1518951480106-0`	1) 1) 1) "1518951480106-0" 2) 1) "sensorId" 2) "1234" 3) "temperature" 4) "19.8"
Description: Returns the entries matching a range of IDs in a stream. Time Complexity: O(N) with N being the number of elements being returned. If N is constant (e.g. always asking for the first 10 elements with COUNT), you can consider it O(1).
XLEN	XLEN key	`XLEN myStream`	(integer) 1
Description: Returns the number of entries of a stream. Time Complexity: O(1)
XDEL	XDEL key ID [ID ...]	`XDEL myStream 1518951480106-0`	(integer) 1
Description: Removes the specified entries from a stream. Time Complexity: O(1) for each single item to delete in the stream
XTRIM	XTRIM key MAXLEN [~] count	`XTRIM myStream MAXLEN 0`	(integer) 0
Description: Trims the stream to a different length. Time Complexity: O(N), with N being the number of evicted entries. Constant times are very small however, since entries are organized in macro nodes containing multiple entries that can be released with a single deallocation.

Command

Syntax

Example

Output

XADD

XADD key field value [field value ...]

XADD myStream * sensorId "1234" temperature "19.8"

1518951480106-0

Description: Appends the specified stream entry to the stream at the specified key. Time Complexity: O(1) when adding a new entry.

XREAD

XREAD [COUNT count] [BLOCK milliseconds] STREAMS key [key ...] ID [ID ...]

XREAD COUNT 2 STREAMS myStream 0

1) 1) "myStream" 2) 1) 1) "1518951480106-0" 2) 1) "sensorId" 2) "1234" 3) "temperature" 4) "19.8"

Description: Read data from one or multiple streams, only returning entries with an ID greater than the last received ID reported by the caller.

XRANGE

XRANGE key start end [COUNT count]

XRANGE myStream 1518951480106-0 1518951480106-0

1) 1) 1) "1518951480106-0" 2) 1) "sensorId" 2) "1234" 3) "temperature" 4) "19.8"

Description: Returns the entries matching a range of IDs in a stream. Time Complexity: O(N) with N being the number of elements being returned. If N is constant (e.g. always asking for the first 10 elements with COUNT), you can consider it O(1).

XLEN

XLEN key

XLEN myStream

(integer) 1

Description: Returns the number of entries of a stream. Time Complexity: O(1)

XDEL

XDEL key ID [ID ...]

XDEL myStream 1518951480106-0

(integer) 1

Description: Removes the specified entries from a stream. Time Complexity: O(1) for each single item to delete in the stream

XTRIM

XTRIM key MAXLEN [~] count

XTRIM myStream MAXLEN 0

(integer) 0

Description: Trims the stream to a different length. Time Complexity: O(N), with N being the number of evicted entries. Constant times are very small however, since entries are organized in macro nodes containing multiple entries that can be released with a single deallocation.

Command	Syntax	Example	Output
ZADD	ZADD key score member [score member ...]	`ZADD myZSet 1 "one" 2 "two"`	(integer) 2
Description: Adds all the specified members with the specified scores to the sorted set stored at key. Time Complexity: O(log(N))
ZRANGE	ZRANGE key start stop [WITHSCORES]	`ZRANGE myZSet 0 -1`	1) "one" 2)"two"
Description: Returns the specified range of elements in the sorted set stored at key.Time Complexity: O(log(N)+M) where M is the number of elements returned

Command

Syntax

Example

Output

ZADD

ZADD key score member [score member ...]

ZADD myZSet 1 "one" 2 "two"

(integer) 2

Description: Adds all the specified members with the specified scores to the sorted set stored at key. Time Complexity: O(log(N))

ZRANGE

ZRANGE key start stop [WITHSCORES]

ZRANGE myZSet 0 -1

1) "one" 2)"two"

Description: Returns the specified range of elements in the sorted set stored at key.Time Complexity: O(log(N)+M) where M is the number of elements returned

Command	Syntax	Example	Output
LPUSH	LPUSH key value [value ...]	`LPUSH myList "World"`	(integer) 1
Description: Inserts the specified values at the head of the list stored at key. Time Complexity: O(N)
RPUSH	RPUSH key value [value ...]	`RPUSH myList "Hello"`	(integer) 2
Description: Inserts the specified values at the tail of the list stored at key.Time Complexity: O(N)
LRANGE	LRANGE key start stop	`LRANGE myList 0 -1`	1) "World" 2) "Hello"
Description: Returns the specified elements of the list stored at key.Time Complexity: O(S+N) where S is the distance of start and N is the number of elements in the specified range.
LLEN	LLEN key	`LLEN myList`	(integer) 2
Description: Returns the length of the list stored at key.Time Complexity: O(1)
LPOP	LPOP key [count]	`LPOP myList`	"World"
Description: Removes and returns the first element of the list stored at key.Time Complexity: O(N)
RPOP	RPOP key [count]	`RPOP myList`	"Hello"
Description: Removes and returns the last element of the list stored at key.Time Complexity: O(N)

Command

Syntax

Example

Output

LPUSH

LPUSH key value [value ...]

LPUSH myList "World"

(integer) 1

Description: Inserts the specified values at the head of the list stored at key. Time Complexity: O(N)

RPUSH

RPUSH key value [value ...]

RPUSH myList "Hello"

(integer) 2

Description: Inserts the specified values at the tail of the list stored at key.Time Complexity: O(N)

LRANGE

LRANGE key start stop

LRANGE myList 0 -1

1) "World" 2) "Hello"

Description: Returns the specified elements of the list stored at key.Time Complexity: O(S+N) where S is the distance of start and N is the number of elements in the specified range.

LLEN

LLEN key

LLEN myList

(integer) 2

Description: Returns the length of the list stored at key.Time Complexity: O(1)

LPOP

LPOP key [count]

LPOP myList

"World"

Description: Removes and returns the first element of the list stored at key.Time Complexity: O(N)

RPOP

RPOP key [count]

RPOP myList

"Hello"

Description: Removes and returns the last element of the list stored at key.Time Complexity: O(N)

Command	Syntax	Example	Output
LPUSH	LPUSH key value [value ...]	`LPUSH myList "World"`	(integer) 1
Description: Inserts the specified values at the head of the list stored at key. Time Complexity: O(N)
RPUSH	RPUSH key value [value ...]	`RPUSH myList "Hello"`	(integer) 2
Description: Inserts the specified values at the tail of the list stored at key.Time Complexity: O(N)
LRANGE	LRANGE key start stop	`LRANGE myList 0 -1`	1) "World" 2) "Hello"
Description: Returns the specified elements of the list stored at key.Time Complexity: O(S+N) where S is the distance of start and N is the number of elements in the specified range.
LLEN	LLEN key	`LLEN myList`	(integer) 2
Description: Returns the length of the list stored at key.Time Complexity: O(1)
LPOP	LPOP key [count]	`LPOP myList`	"World"
Description: Removes and returns the first element of the list stored at key.Time Complexity: O(N)
RPOP	RPOP key [count]	`RPOP myList`	"Hello"
Description: Removes and returns the last element of the list stored at key.Time Complexity: O(N)

Command

Syntax

Example

Output

LPUSH

LPUSH key value [value ...]

LPUSH myList "World"

(integer) 1

Description: Inserts the specified values at the head of the list stored at key. Time Complexity: O(N)

RPUSH

RPUSH key value [value ...]

RPUSH myList "Hello"

(integer) 2

Description: Inserts the specified values at the tail of the list stored at key.Time Complexity: O(N)

LRANGE

LRANGE key start stop

LRANGE myList 0 -1

1) "World" 2) "Hello"

Description: Returns the specified elements of the list stored at key.Time Complexity: O(S+N) where S is the distance of start and N is the number of elements in the specified range.

LLEN

LLEN key

LLEN myList

(integer) 2

Description: Returns the length of the list stored at key.Time Complexity: O(1)

LPOP

LPOP key [count]

LPOP myList

"World"

Description: Removes and returns the first element of the list stored at key.Time Complexity: O(N)

RPOP

RPOP key [count]

RPOP myList

"Hello"

Description: Removes and returns the last element of the list stored at key.Time Complexity: O(N)

Command	Syntax	Example	Output
JSON.SET	JSON.SET key path value	`JSON.SET employee_profile:1 . '{"name":"Alice"}'`	OK
Description: Sets JSON value at path in key.Time Complexity: O(M+N) where M is the original size and N is the new size
JSON.GET	JSON.GET key [path [path ...]]	`JSON.GET employee_profile:1`	`{ "name": 'Alice' }`
Description: Returns the JSON value at path in key.Time Complexity: O(N) when path is evaluated to a single value where N is the size of the value, O(N) when path is evaluated to multiple values, where N is the size of the key
JSON.NUMINCRBY	JSON.NUMINCRBY key path number	`JSON.SET employee_profile:1 .age 30 JSON.NUMINCRBY employee_profile:1 .age 5`	35
Description: Increments a number inside a JSON document.Time Complexity: O(1) when path is evaluated to a single value, O(N) when path is evaluated to multiple values, where N is the size of the key
JSON.OBJKEYS	JSON.OBJKEYS key [path]	`JSON.OBJKEYS employee_profile:1`	1) "name" 2) "age"
Description: Return the keys in the object that's referenced by path. Time Complexity: O(N) when path is evaluated to a single value, where N is the number of keys in the object, O(N) when path is evaluated to multiple values, where N is the size of the key
JSON.OBJLEN	JSON.OBJLEN key [path]	`JSON.OBJLEN employee_profile:1`	(integer) 2
Description: Report the number of keys in the JSON object at path in key. Time Complexity: O(1) when path is evaluated to a single value, O(N) when path is evaluated to multiple values, where N is the size of the key
JSON.ARRAPPEND	JSON.ARRAPPEND key [path] value [value ...]	`JSON.SET employee_profile:1 .colors '["red", "green", "blue"]' JSON.ARRAPPEND employee_profile:1 .colors '"yellow"'`	(integer) 4
Description: Append the json values into the array at path after the last element in it. Time Complexity: O(1) for each value added, O(N) for multiple values added where N is the size of the key
JSON.ARRINSERT	JSON.ARRINSERT key path index value [value ...]	`JSON.ARRINSERT employee_profile:1 .colors 2 '"purple"'`	(integer) 5
Description: Insert the json values into the array at path before the index (shifts to the right). Time Complexity: O(N) when path is evaluated to a single value where N is the size of the array, O(N) when path is evaluated to multiple values, where N is the size of the key
JSON.ARRINDEX	JSON.ARRINDEX key path value [start [stop]]	`JSON.ARRINDEX employee_profile:1 .colors '"purple"'`	(integer) 2
Description: Searches for the first occurrence of a JSON value in an array. Time Complexity: O(N) when path is evaluated to a single value where N is the size of the array, O(N) when path is evaluated to multiple values, where N is the size of the key

Command	Syntax	Example	Output
FT.CREATE	`FT.CREATE index [ON HASH \| JSON] [PREFIX count prefix [prefix ...]] [FILTER {filter}] SCHEMA field_name [AS alias] TEXT \| TAG \| NUMERIC \| GEO \| VECTOR \| GEOSHAPE [ SORTABLE [UNF]] [NOINDEX] ...`	`FT.CREATE staff:index ON JSON PREFIX 1 staff: SCHEMA "$.name" AS name TEXT "$.age" AS age NUMERIC "$.isSingle" AS isSingle TAG '$["skills"][*]' AS skills TAG SEPARATOR "\|"`	OK
Description: Create an index with the given specification.Time Complexity: O(K) where K is the number of fields in the document, O(N) for keys in the keySpace
FT.SEARCH	`FT.SEARCH index query [FILTER numeric_field min max [ FILTER numeric_field min max ...]] [RETURN count identifier [AS property] [ identifier [AS property] ...]] [SORTBY sortby [ ASC \| DESC] [WITHCOUNT]] [LIMIT offset num] [PARAMS nargs name value [ name value ...]]`	`JSON.SET "staff:1" "$" '{"name":"Bob","age":22,"isSingle":true,"skills":["NodeJS","MongoDB","React"]}' JSON.SET "staff:2" "$" '{"name":"Alex","age":45,"isSingle":true,"skills":["Python","MySQL","Angular"]}' FT.SEARCH staff:index "(@name:'alex')" RETURN 1 $ LIMIT 0 10 FT.SEARCH staff:index "((@isSingle:{true}) (@age:[(18 +inf]))" RETURN 1 $ LIMIT 0 10`	Matching documents data
Description: Search the index with a query, returning either documents or just ids. Time Complexity: O(N)
FT.AGGREGATE	`FT.AGGREGATE index query [LOAD count field [field ...]] [ GROUPBY nargs property [property ...] [ REDUCE function nargs arg [arg ...] [AS name] ... [ SORTBY nargs [ property ASC \| DESC [ property ASC \| DESC ...]] [MAX num] [WITHCOUNT] [ APPLY expression AS name ... [ LIMIT offset num] [FILTER filter] [ PARAMS nargs name value [ name value ...]]`	`FT.AGGREGATE staff:index "(@age:[(18 +inf])" GROUPBY 1 @age REDUCE COUNT_DISTINCT 1 @name AS staff_count`	`\| age \| staff_count \| \| ----\| ------------\| \| 22 \| 1 \| \| 45 \| 1 \|`
Description: Run a search query on an index, and perform aggregate transformations on the results.
FT.INFO	FT.INFO index	`FT.INFO staff:index`	A list of configuration parameters and stats for the index.
Description: Return information and statistics on the index.Time Complexity: O(1)
FT.DROPINDEX	FT.DROPINDEX index [DD]	`FT.DROPINDEX staff:index`	OK
Description: Dropping existing index.Time Complexity:O(1) or O(N) if documents are deleted, where N is the number of keys in the keyspace

Command

Syntax

Example

Output

FT.CREATE

FT.CREATE index
  [ON HASH | JSON]
  [PREFIX count prefix [prefix ...]]
  [FILTER {filter}]
  SCHEMA
  field_name [AS alias] TEXT | TAG | NUMERIC | GEO | VECTOR | GEOSHAPE [ SORTABLE [UNF]]
  [NOINDEX]
   ...


FT.CREATE staff:index
    ON JSON
    PREFIX 1 staff:
    SCHEMA
    "$.name" AS name TEXT
    "$.age" AS age NUMERIC
    "$.isSingle"  AS isSingle TAG
    '$["skills"][*]' AS skills TAG SEPARATOR "|"

Description: Create an index with the given specification.Time Complexity: O(K) where K is the number of fields in the document, O(N) for keys in the keySpace

FT.SEARCH

FT.SEARCH index query
  [FILTER numeric_field min max [ FILTER numeric_field min max ...]]
  [RETURN count identifier [AS property] [ identifier [AS property] ...]]
  [SORTBY sortby [ ASC | DESC] [WITHCOUNT]]
  [LIMIT offset num]
  [PARAMS nargs name value [ name value ...]]

JSON.SET "staff:1" "$" '{"name":"Bob","age":22,"isSingle":true,"skills":["NodeJS","MongoDB","React"]}' 

JSON.SET "staff:2" "$" '{"name":"Alex","age":45,"isSingle":true,"skills":["Python","MySQL","Angular"]}' 

FT.SEARCH staff:index
  "(@name:'alex')"
  RETURN 1 $ LIMIT 0 10 

FT.SEARCH staff:index
  "((@isSingle:{true}) (@age:[(18 +inf]))"
  RETURN 1 $ LIMIT 0 10

Matching documents data

Description: Search the index with a query, returning either documents or just ids. Time Complexity: O(N)

FT.AGGREGATE

FT.AGGREGATE index query
  [LOAD count field [field ...]]
  [ GROUPBY nargs property [property ...] [ REDUCE function nargs arg [arg ...] [AS name] ...
  [ SORTBY nargs [ property ASC | DESC [ property ASC | DESC ...]] [MAX num] [WITHCOUNT]
  [ APPLY expression AS name  ...
  [ LIMIT offset num]
  [FILTER filter]
  [ PARAMS nargs name value [ name value ...]]

FT.AGGREGATE staff:index "(@age:[(18 +inf])"
  GROUPBY 1 @age
  	REDUCE COUNT_DISTINCT 1 @name AS staff_count

    | age | staff_count |
    | ----| ------------|
    | 22  | 1           |
    | 45  | 1           |

Description: Run a search query on an index, and perform aggregate transformations on the results.

FT.INFO

FT.INFO index

FT.INFO staff:index

A list of configuration parameters and stats for the index.

Description: Return information and statistics on the index.Time Complexity: O(1)

FT.DROPINDEX

FT.DROPINDEX index [DD]

FT.DROPINDEX staff:index

Description: Dropping existing index.Time Complexity:O(1) or O(N) if documents are deleted, where N is the number of keys in the keyspace

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Redis Commands Cheat sheet

Connect#

NOTE

Strings/Numbers#

Generic#

Hashes#

Sets#

Sorted sets#

Lists#

Streams#

REDIS STACK COMMANDS

JSON#

Search and Query#

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