| Type | Use Case | Example |
|---|
| String | Cache, counter, session | SET user:1 '{"name":"Alice"}' |
| List | Queue, recent items | LPUSH queue task1 |
| Set | Tags, unique items | SADD tags python web |
| Sorted Set | Leaderboard, ranking | ZADD leaderboard 100 alice |
| Hash | Object fields | HSET user:1 name Alice age 30 |
| Stream | Event log, messaging | XADD events * type click page /home |
| HyperLogLog | Cardinality estimation | PFADD visitors user1 user2 |
| Bitmap | Feature flags, bitfields | SETBIT flags:1 0 1 |
# Strings
SET key value [EX 3600] # Set with TTL
GET key
INCR counter # Atomic increment
MGET key1 key2 # Multi-get
# Lists
LPUSH queue item # Push to head
RPOP queue # Pop from tail (queue behavior)
LRANGE queue 0 -1 # Get all
# Sets
SADD myset member1
SISMEMBER myset member1
SINTER set1 set2 # Intersection
SUNION set1 set2 # Union
# Sorted Sets
ZADD leaderboard 100 alice
ZRANGE leaderboard 0 -1 WITHSCORES
ZRANK leaderboard alice # Position
# Hashes
HSET user:1 name Alice age 30
HGET user:1 name
HGETALL user:1
# Streams
XADD events * type click page /home
XREAD COUNT 10 STREAMS events 0