cheatsheet

Redis

Service Management

• sudo systemctl start redis: Start Redis service
• sudo systemctl stop redis: Stop Redis service
• sudo systemctl restart redis: Restart Redis service
• sudo systemctl status redis: Check the status of Redis service
• sudo systemctl enable redis: Enable Redis to start on boot
• sudo systemctl disable redis: Disable Redis from starting on boot

Basic Redis CLI Commands

• redis-cli: Start the Redis command-line interface
• redis-cli -h <host> -p <port>: Connect to a specific Redis instance
• redis-cli ping: Check if Redis is running

Key-Value Operations

• SET key value: Set a string value
• GET key: Get the value of a key
• DEL key: Delete a key
• EXISTS key: Check if a key exists
• KEYS pattern: Find all keys matching the given pattern
• EXPIRE key seconds: Set a key’s time to live in seconds
• TTL key: Get the time to live for a key

List Operations

• LPUSH key value [value ...]: Insert all the specified values at the head of the list
• RPUSH key value [value ...]: Insert all the specified values at the tail of the list
• LPOP key: Remove and get the first element in a list
• RPOP key: Remove and get the last element in a list
• LRANGE key start stop: Get a range of elements from a list

Set Operations

• SADD key member [member ...]: Add one or more members to a set
• SMEMBERS key: Get all the members in a set
• SREM key member [member ...]: Remove one or more members from a set
• SISMEMBER key member: Check if a member exists in a set

Hash Operations

• HSET key field value: Set the string value of a hash field
• HGET key field: Get the value of a hash field
• HDEL key field [field ...]: Delete one or more hash fields
• HGETALL key: Get all the fields and values in a hash

Sorted Set Operations

• ZADD key score member [score member ...]: Add one or more members to a sorted set
• ZRANGE key start stop [WITHSCORES]: Return a range of members in a sorted set
• ZREM key member [member ...]: Remove one or more members from a sorted set

Pub/Sub

• SUBSCRIBE channel [channel ...]: Listen for messages published to the given channels
• PUBLISH channel message: Post a message to a channel
• UNSUBSCRIBE [channel [channel ...]]: Stop listening for messages posted to the given channels

Transaction Commands

• MULTI: Mark the start of a transaction block
• EXEC: Execute all commands issued after MULTI
• DISCARD: Discard all commands issued after MULTI

Server Commands

• INFO: Get information and statistics about the server
• CONFIG GET parameter: Get the value of a configuration parameter
• CONFIG SET parameter value: Set a configuration parameter to the given value
• FLUSHDB: Remove all keys from the current database
• FLUSHALL: Remove all keys from all databases

Persistence Commands

• SAVE: Synchronously save the dataset to disk
• BGSAVE: Asynchronously save the dataset to disk
• LASTSAVE: Get the UNIX time stamp of the last successful save to disk

Cluster Commands

• CLUSTER INFO: Provide information about the cluster
• CLUSTER NODES: Get details about cluster nodes

Debugging

• MONITOR: Listen for all requests received by the server in real-time
• SLOWLOG GET [number]: Get the slow logs

Security

• AUTH password: Authenticate to the server

Remember to use appropriate authentication and security measures when working with Redis, especially in production environments.

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