Redis

Strings

String operations

Hashes

Hash operations

Lists

List operations

Sets

Set operations

Streams

Stream operations

Pub/Sub

Publish/Subscribe

4commands

Server

Server commands

14commands

JSON

RedisJSON module

Search

RedisSearch FT commands

Run Redis with Docker

$ docker run -d -p 6379:6379 --name redis redis:alpine

Start Redis server in a Docker container on port 6379

Connect to Redis CLI

$ docker exec -it redis redis-cli

Open interactive Redis CLI in the running container

Test Redis connection

$ redis-cli ping

Send PING to verify Redis server is responding (returns PONG)

Append to string

$ APPEND key value

Append value to existing string

Decrement value

$ DECR key

Decrement integer value by 1

Get key value

$ GET key

Get string value of a key

Increment value

$ INCR key

Increment integer value by 1

Increment by amount

$ INCRBY key amount

Increment integer value by specific amount

Get multiple keys

$ MGET key1 key2 key3

Get values of multiple keys

Set multiple keys

$ MSET key1 value1 key2 value2

Set multiple key-value pairs atomically

Set key value

$ SET key value

Set string value for a key

Set with expiry (seconds)

$ SETEX key seconds value

Set value with expiration in seconds

Set if not exists

$ SETNX key value

Set value only if key doesn't exist

Delete hash field

$ HDEL key field

Delete field from hash

Check field exists

$ HEXISTS key field

Check if field exists in hash

Get hash field

$ HGET key field

Get value of hash field

Get all hash fields

$ HGETALL key

Get all fields and values in hash

Increment hash field

$ HINCRBY key field increment

Increment hash field by integer

Get multiple hash fields

$ HMGET key field1 field2

Get values of multiple hash fields

Set multiple hash fields

$ HMSET key field1 value1 field2 value2

Set multiple fields in hash

Set hash field

$ HSET key field value

Set field in hash

Blocking pop from head

$ BLPOP key timeout

Pop from head or block until available

Get element by index

$ LINDEX key index

Get element at specific index

Get list length

$ LLEN key

Get number of elements in list

Pop from list head

$ LPOP key

Remove and return first element

Push to list head

$ LPUSH key value

Insert value at beginning of list

Get list range

$ LRANGE key 0 -1

Get all elements in list (0 to -1 = all)

Pop from list tail

$ RPOP key

Remove and return last element

Push to list tail

$ RPUSH key value

Insert value at end of list

Add to set

$ SADD key member

Add member to set

Get set size

$ SCARD key

Get number of members in set

Difference of sets

$ SDIFF key1 key2

Get difference between sets

Intersection of sets

$ SINTER key1 key2

Get intersection of multiple sets

Check set membership

$ SISMEMBER key member

Check if member exists in set

Get all set members

$ SMEMBERS key

Get all members of set

Remove from set

$ SREM key member

Remove member from set

Union of sets

$ SUNION key1 key2

Get union of multiple sets

Add to stream

$ XADD stream * field value

Add entry to stream with auto-generated ID

Claim abandoned messages

$ XAUTOCLAIM stream group consumer min-idle-time start

Automatically claim pending messages from other consumers

Create consumer group

$ XGROUP CREATE stream group $ MKSTREAM

Create consumer group for stream

Reset consumer group

$ XGROUP SETID stream group $ ENTRIESREAD 0

Reset consumer group position to start or specific entry

Detailed stream info

$ XINFO STREAM mystream FULL

Get comprehensive stream information including entries and groups

Get stream length

$ XLEN stream

Get number of entries in stream

View pending messages

$ XPENDING stream group - + 10

Get detailed information about pending messages in consumer group

Get stream range

$ XRANGE stream - +

Get all entries in stream

Read from stream

$ XREAD STREAMS stream 0

Read entries from stream

Read as consumer

$ XREADGROUP GROUP group consumer STREAMS stream >

Read stream entries as consumer group member

Pattern subscribe

$ PSUBSCRIBE pattern*

Subscribe to channels matching pattern

Publish message

$ PUBLISH channel message

Publish message to channel

Subscribe to channel

$ SUBSCRIBE channel

Subscribe to channel for messages

Unsubscribe from channel

$ UNSUBSCRIBE channel

Unsubscribe from channel

Connect to Redis

$ redis-cli -h host -p port -a password

Connect to Redis server with authentication

Database size

$ DBSIZE

Get number of keys in current database

Delete key

$ DEL key

Delete one or more keys

Check key exists

$ EXISTS key

Check if key exists

Set key expiry

$ EXPIRE key seconds

Set expiration time on key

Flush all databases

$ FLUSHALL

Delete all keys in all databases

Flush current database

$ FLUSHDB

Delete all keys in current database

Server info

$ INFO

Get server information and statistics

Find keys by pattern

$ KEYS pattern*

Find keys matching pattern (use SCAN in production)

Ping server

$ PING

Test if server is responding

Scan keys (safe)

$ SCAN 0 MATCH pattern* COUNT 100

Iterate keys safely (non-blocking)

Select database

$ SELECT index

Switch to different database (0-15)

Get time to live

$ TTL key

Get remaining time to live of key

Get key type

$ TYPE key

Get the type of value stored at key

Get JSON document

$ JSON.GET key $

Get entire JSON document or specific path

Get field from multiple docs

$ JSON.MGET key1 key2 $.field

Get specific field from multiple JSON documents

Set JSON document

$ JSON.SET key $ '{"field":"value"}'

Set JSON document at path using JSONPath syntax

Aggregation query

$ FT.AGGREGATE idx * GROUPBY 1 @category

Run aggregation queries with grouping and transformations

Create search index

$ FT.CREATE idx ON HASH PREFIX 1 doc: SCHEMA title TEXT

Create full-text search index on hash with schema definition

Full-text search

$ FT.SEARCH idx "query string" LIMIT 0 10

Execute full-text search with pagination support

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Redis

In-memory data store commands for caching, pub/sub messaging, streams, and key-value operations.

71 commands

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Getting Started

Quick setup and installation

Strings

String operations

Hashes

Hash operations

Lists

List operations

Sets

Set operations

Streams

Stream operations

Pub/Sub

Publish/Subscribe

4commands

Server

Server commands

14commands

JSON

RedisJSON module

Search

RedisSearch FT commands