redis.io

Implement optimistic locking (check-and-set) with Redis WATCH

Execute an atomic batch of Redis commands with MULTI/EXEC

Increment a member's score in a Redis sorted set with ZINCRBY

Build a top-N leaderboard with Redis sorted sets (ZADD/ZRANGE)

Create a Redis sorted set and add/update member scores with ZADD

Store compact integer counters in Redis with BITFIELD

Track daily user activity with Redis bitmaps (SETBIT/GETBIT)

Count distinct unique items in Redis with HyperLogLog (PFADD/PFCOUNT)

Calculate the distance between two Redis geospatial members with GEODIST

Find points near a location or member in Redis with GEOSEARCH

Add locations to a Redis geospatial index with GEOADD

Implement a Redis cache-aside (lazy loading) pattern with TTL

Batch many Redis commands efficiently with pipelining

Build an optimistic lock with Redis WATCH to prevent lost updates

Run an atomic batch of Redis commands with MULTI/EXEC transactions

Track presence/boolean flags compactly with Redis bitmaps (SETBIT/GETBIT/BITCOUNT)

Pack and manipulate bit-level integers with Redis BITFIELD

Store and query geospatial data with Redis GEOADD and GEOSEARCH

Count unique items with Redis HyperLogLog (PFADD/PFCOUNT/PFMERGE)

Reliably distribute work to a Redis Stream consumer group with at-least-once semantics

Fan out Redis Stream messages to all consumers with XREAD

Consume Redis Streams with a consumer group using XREADGROUP and XACK

Append events to a Redis Stream with XADD

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Implement Redis pub/sub with SUBSCRIBE and PUBLISH across clients

Manage Redis key expiration with EXPIRE, TTL and PERSIST

Use Redis INCR for atomic counters and build a sliding rate limiter

Iterate Redis keys without blocking using SCAN with cursor, MATCH and COUNT

Use Redis sorted sets for leaderboards and ranking with ZADD/ZRANGE/ZSCORE

Build a reliable blocking Redis queue with BLPOP/BRPOP and BRPOPLPUSH

Use Redis lists as a queue with LPUSH/RPUSH/LRANGE and pop operations

Store and read Redis hashes for objects using HSET/HGET/HGETALL (redis-cli and clients)

Implement a distributed lock with Redis SET NX EX and safe Lua-based release

Set and get string keys in Redis, including expirations and conditional set

Connect to a Redis server with redis-cli including auth, TLS, and a specific database

Use Redis lists as a queue with LPUSH/RPUSH/LRANGE and pop operations

Store and read Redis hashes for objects using HSET/HGET/HGETALL (redis-cli and clients)

Implement a distributed lock with Redis SET NX EX and safe Lua-based release

Set and get string keys in Redis, including expirations and conditional set

Connect to a Redis server with redis-cli including auth, TLS, and a specific database

Recover stalled Redis Streams consumers using XAUTOCLAIM instead of manual XPENDING plus XCLAIM

Trigger a manual Redis Cluster failover with CLUSTER FAILOVER for planned primary maintenance

Configure Redis Sentinel to automatically fail over a monitored primary

Use Redis Streams as a lightweight event bus for change data capture

Implement Redis pub/sub fanout to broadcast messages to multiple subscribers