Redis Command Helper

Search 70+ common Redis commands with syntax and a plain-language description, grouped by data type.

Command	Syntax	What it does	Type
SET	SET key value [EX seconds] [NX\|XX]	Set a string value, optionally with an expiry or only if it does or doesn't exist	Strings
GET	GET key	Get a string value	Strings
MSET	MSET key value [key value …]	Set several keys at once	Strings
MGET	MGET key [key …]	Get several keys at once	Strings
INCR	INCR key	Add 1 to a number stored at a key	Strings
DECR	DECR key	Subtract 1 from a number stored at a key	Strings
INCRBY	INCRBY key increment	Add an integer to a number	Strings
APPEND	APPEND key value	Append to a string	Strings
STRLEN	STRLEN key	Length of a string	Strings
SETEX	SETEX key seconds value	Set a value that expires	Strings
SETNX	SETNX key value	Set only if the key doesn't exist	Strings
DEL	DEL key [key …]	Delete keys	Keys
EXISTS	EXISTS key [key …]	Count how many of the keys exist	Keys
EXPIRE	EXPIRE key seconds	Make a key expire after some seconds	Keys
TTL	TTL key	Seconds left before a key expires (-1 none, -2 missing)	Keys
PERSIST	PERSIST key	Remove a key's expiry	Keys
KEYS	KEYS pattern	Find keys matching a pattern — avoid on big production databases	Keys
SCAN	SCAN cursor [MATCH pattern] [COUNT n]	Safely iterate over keys in steps	Keys
RENAME	RENAME key newkey	Rename a key	Keys
TYPE	TYPE key	The data type stored at a key	Keys
HSET	HSET key field value [field value …]	Set fields of a hash	Hashes
HGET	HGET key field	Get one field of a hash	Hashes
HGETALL	HGETALL key	Get all fields and values of a hash	Hashes
HDEL	HDEL key field [field …]	Delete hash fields	Hashes
HEXISTS	HEXISTS key field	Does a hash field exist?	Hashes
HINCRBY	HINCRBY key field increment	Add to a number in a hash field	Hashes
HKEYS	HKEYS key	All field names of a hash	Hashes
HLEN	HLEN key	Number of fields in a hash	Hashes
LPUSH	LPUSH key value [value …]	Add items to the start of a list	Lists
RPUSH	RPUSH key value [value …]	Add items to the end of a list	Lists
LPOP	LPOP key	Remove and return the first item	Lists
RPOP	RPOP key	Remove and return the last item	Lists
LRANGE	LRANGE key start stop	Get a range of items (0 -1 for all)	Lists
LLEN	LLEN key	Length of a list	Lists
LINDEX	LINDEX key index	Get an item by position	Lists
BLPOP	BLPOP key [key …] timeout	Wait for an item to pop from a list	Lists
SADD	SADD key member [member …]	Add members to a set	Sets
SREM	SREM key member [member …]	Remove members from a set	Sets
SMEMBERS	SMEMBERS key	All members of a set	Sets
SISMEMBER	SISMEMBER key member	Is the value in the set?	Sets
SCARD	SCARD key	Number of members in a set	Sets
SUNION	SUNION key [key …]	Union of sets	Sets
SINTER	SINTER key [key …]	Intersection of sets	Sets
SDIFF	SDIFF key [key …]	Difference between sets	Sets
ZADD	ZADD key score member [score member …]	Add members with scores to a sorted set	Sorted sets
ZRANGE	ZRANGE key start stop [WITHSCORES]	Members by rank, lowest score first	Sorted sets
ZREVRANGE	ZREVRANGE key start stop [WITHSCORES]	Members by rank, highest score first	Sorted sets
ZRANK	ZRANK key member	Rank of a member	Sorted sets
ZSCORE	ZSCORE key member	Score of a member	Sorted sets
ZINCRBY	ZINCRBY key increment member	Add to a member's score	Sorted sets
ZREM	ZREM key member [member …]	Remove members	Sorted sets
ZCARD	ZCARD key	Number of members	Sorted sets
PUBLISH	PUBLISH channel message	Send a message to a channel	Pub/Sub
SUBSCRIBE	SUBSCRIBE channel [channel …]	Listen for messages on channels	Pub/Sub
XADD	XADD key * field value [field value …]	Append an entry to a stream	Streams
XRANGE	XRANGE key start end [COUNT n]	Read entries from a stream	Streams
MULTI	MULTI	Start a transaction	Transactions
EXEC	EXEC	Run all queued commands	Transactions
DISCARD	DISCARD	Cancel the transaction	Transactions
WATCH	WATCH key [key …]	Watch keys for changes before a transaction	Transactions
PING	PING	Check the server is alive (replies PONG)	Server
INFO	INFO [section]	Server information and statistics	Server
DBSIZE	DBSIZE	Number of keys in the current database	Server
SELECT	SELECT index	Switch to another numbered database	Server
FLUSHDB	FLUSHDB	Delete every key in the current database — destructive	Server
FLUSHALL	FLUSHALL	Delete every key in every database — destructive	Server
CONFIG GET	CONFIG GET parameter	Read a configuration value	Server
MONITOR	MONITOR	Stream every command the server receives	Server

Commands are case-insensitive. Run them in redis-cli, or through your client library with the same names.

About redis command helper

Search 70+ common Redis commands with syntax and a plain-language explanation.

Data types

Strings (SET, GET), lists (LPUSH, LRANGE), hashes (HSET, HGETALL).
Sets (SADD, SMEMBERS) and sorted sets (ZADD, ZRANGE).

Careful in production

Commands such as KEYS * and FLUSHALL can block or wipe a server. Use SCAN for iterating keys, and never run FLUSHALL unless you intend to.

A worked example

To cache a value for 60 seconds, use SET greeting hello EX 60 and read it with GET greeting. TTL greeting shows the seconds left. To count page views, INCR views adds one each time. A hash such as HSET user:1 name Asha stores several fields under one key.

Production tips

Always set expirations on cache keys.
Use SCAN, not KEYS, to look through many keys.
Protect Redis with a password and keep it off the public internet.

How to use redis command helper

1Type in the search boxSearch by name, code or keyword.

2Scan the tableThe list narrows as you type.

3Use the answerNote or copy what you need.

Your privacy on this tool

This tool is built so that what you enter stays with you.

Everything you type or upload is processed in your browser, on your own device.
Nothing you enter is sent to our servers, so we cannot see, keep or share it.
We do not save your input. A few tools remember small settings, such as a chosen time zone, in your own browser only.
No account, email address or sign-up is needed, and nothing is watermarked.
If you accept analytics, we count page views and tool use. We never collect the contents of your files or text.
Ads, where shown, sit below the tool and are not given what you enter.

Read the full privacy policy.

Questions people ask

No, SET and set are the same.

KEYS on big databases and FLUSHDB or FLUSHALL, which delete data.

No. Everything is worked out in your browser and nothing you type is sent to a server.

SQL Minifier SQL Validator SQL to JSON Converter JSON to SQL Converter CSV to SQL Converter SQL to CSV Converter SQL INSERT Generator SQL UPDATE Generator

Command

Syntax

What it does

Type

SET

SET key value [EX seconds] [NX|XX]

Set a string value, optionally with an expiry or only if it does or doesn't exist

Strings

GET

GET key

Get a string value

Strings

MSET

MSET key value [key value …]

Set several keys at once

Strings

MGET

MGET key [key …]

Get several keys at once

Strings

INCR

INCR key

Add 1 to a number stored at a key

Strings

DECR

DECR key

Subtract 1 from a number stored at a key

Strings

INCRBY

INCRBY key increment

Add an integer to a number

Strings

APPEND

APPEND key value

Append to a string

Strings

STRLEN

STRLEN key

Length of a string

Strings

SETEX

SETEX key seconds value

Set a value that expires

Strings

SETNX

SETNX key value

Set only if the key doesn't exist

Strings

DEL

DEL key [key …]

Delete keys

Keys

EXISTS

EXISTS key [key …]

Count how many of the keys exist

Keys

EXPIRE

EXPIRE key seconds

Make a key expire after some seconds

Keys

TTL

TTL key

Seconds left before a key expires (-1 none, -2 missing)

Keys

PERSIST

PERSIST key

Remove a key's expiry

Keys

KEYS

KEYS pattern

Find keys matching a pattern — avoid on big production databases

Keys

SCAN

SCAN cursor [MATCH pattern] [COUNT n]

Safely iterate over keys in steps

Keys

RENAME

RENAME key newkey

Rename a key

Keys

TYPE

TYPE key

The data type stored at a key

Keys

HSET

HSET key field value [field value …]

Set fields of a hash

Hashes

HGET

HGET key field

Get one field of a hash

Hashes

HGETALL

HGETALL key

Get all fields and values of a hash

Hashes

HDEL

HDEL key field [field …]

Delete hash fields

Hashes

HEXISTS

HEXISTS key field

Does a hash field exist?

Hashes

HINCRBY

HINCRBY key field increment

Add to a number in a hash field

Hashes

HKEYS

HKEYS key

All field names of a hash

Hashes

HLEN

HLEN key

Number of fields in a hash

Hashes

LPUSH

LPUSH key value [value …]

Add items to the start of a list

Lists

RPUSH

RPUSH key value [value …]

Add items to the end of a list

Lists

LPOP

LPOP key

Remove and return the first item

Lists

RPOP

RPOP key

Remove and return the last item

Lists

LRANGE

LRANGE key start stop

Get a range of items (0 -1 for all)

Lists

LLEN

LLEN key

Length of a list

Lists

LINDEX

LINDEX key index

Get an item by position

Lists

BLPOP

BLPOP key [key …] timeout

Wait for an item to pop from a list

Lists

SADD

SADD key member [member …]

Add members to a set

Sets

SREM

SREM key member [member …]

Remove members from a set

Sets

SMEMBERS

SMEMBERS key

All members of a set

Sets

SISMEMBER

SISMEMBER key member

Is the value in the set?

Sets

SCARD

SCARD key

Number of members in a set

Sets

SUNION

SUNION key [key …]

Union of sets

Sets

SINTER

SINTER key [key …]

Intersection of sets

Sets

SDIFF

SDIFF key [key …]

Difference between sets

Sets

ZADD

ZADD key score member [score member …]

Add members with scores to a sorted set

Sorted sets

ZRANGE

ZRANGE key start stop [WITHSCORES]

Members by rank, lowest score first

Sorted sets

ZREVRANGE

ZREVRANGE key start stop [WITHSCORES]

Members by rank, highest score first

Sorted sets

ZRANK

ZRANK key member

Rank of a member

Sorted sets

ZSCORE

ZSCORE key member

Score of a member

Sorted sets

ZINCRBY

ZINCRBY key increment member

Add to a member's score

Sorted sets

ZREM

ZREM key member [member …]

Remove members

Sorted sets

ZCARD

ZCARD key

Number of members

Sorted sets

PUBLISH

PUBLISH channel message

Send a message to a channel

Pub/Sub

SUBSCRIBE channel [channel …]

Listen for messages on channels

Pub/Sub

XADD

XADD key * field value [field value …]

Append an entry to a stream

Streams

XRANGE

XRANGE key start end [COUNT n]

Read entries from a stream

Streams

MULTI

Start a transaction

Transactions

EXEC

Run all queued commands

Transactions

DISCARD

Cancel the transaction

Transactions

WATCH

WATCH key [key …]

Watch keys for changes before a transaction

Transactions

PING

Check the server is alive (replies PONG)

Server

INFO

INFO [section]

Server information and statistics

Server

DBSIZE

Number of keys in the current database

Server

SELECT

SELECT index

Switch to another numbered database

Server

FLUSHDB

Delete every key in the current database — destructive

Server

FLUSHALL

Delete every key in every database — destructive

Server

CONFIG GET

CONFIG GET parameter

Read a configuration value

Server

MONITOR

Stream every command the server receives

Server

About redis command helper

Search 70+ common Redis commands with syntax and a plain-language explanation.

Data types

Strings (SET, GET), lists (LPUSH, LRANGE), hashes (HSET, HGETALL).
Sets (SADD, SMEMBERS) and sorted sets (ZADD, ZRANGE).

Careful in production

Commands such as KEYS * and FLUSHALL can block or wipe a server. Use SCAN for iterating keys, and never run FLUSHALL unless you intend to.

A worked example

Production tips

Always set expirations on cache keys.
Use SCAN, not KEYS, to look through many keys.
Protect Redis with a password and keep it off the public internet.

Redis Command Helper

About redis command helper

Data types

Careful in production

A worked example

Production tips

How to use redis command helper

Your privacy on this tool

Questions people ask

More tools you may like

Redis Command Helper

About redis command helper

Data types

Careful in production

A worked example

Production tips

How to use redis command helper

Your privacy on this tool

Questions people ask

More tools you may like