HSET colors white fffff
HSET colors black 000000
HSET colors blue 0000FF
HGET colors white
HDEL colors white
HGETALL colors                # Get all fields and values
HMSET user:1 name Alice age 30
HINCRBY user:1 age 1          # Increment field value
HEXISTS colors black          # Check if field exists
HKEYS colors                  # List all fields
HVALS colors                  # List all values

LPUSH tasks task1
LPUSH tasks task2
RPUSH tasks task3
RPOP tasks                    # Remove and get last element
LPOP tasks                    # Remove and get first element
LRANGE tasks 0 2              # Get first 3 elements
BRPOP tasks 5                 # Blocking RPOP with timeout
BLPOP tasks 5                 # Blocking LPOP with timeout
LLEN tasks                    # List length
LREM tasks 1 task2            # Remove first occurrence of value
LSET tasks 0 urgent_task      # Set value at index

SADD colors white
SADD colors black
SADD colors blue
SREM colors white
SMEMBERS colors               # List all members
SISMEMBER colors black        # Check membership
SCARD colors                  # Set cardinality
SRANDMEMBER colors            # Get random member
SPOP colors                   # Remove and return random member
SDIFF colors othercolors      # Diff sets
SINTER colors othercolors     # Intersect sets
SUNION colors othercolors     # Union sets

ZADD scores 100 "Alice"
ZADD scores 200 "Bob"
ZINCRBY scores 50 "Alice"         # Increment score
ZRANGE scores 0 -1 WITHSCORES     # Get all members with scores
ZREVRANGE scores 0 1 WITHSCORES   # Top 2 scores
ZREM scores "Bob"                 # Remove member
ZCOUNT scores 100 200             # Count members in score range
ZRANK scores "Alice"              # Get rank of member
ZPOPMAX scores                    # Remove & return member with max score
ZPOPMIN scores                    # Remove & return member with min score
ZSCAN scores 0 MATCH "A*"         # Scan by pattern

SET welcomeMessage "Hello"
APPEND welcomeMessage " World"
GET welcomeMessage
SET masterServer host123 EX 60 NX # EX: expire in seconds, NX: only if not exists
SET anotherKey value PX 5000 XX   # PX: expire in ms, XX: only if exists
GETRANGE welcomeMessage 0 4       # Substring
STRLEN welcomeMessage             # String length
INCR counter                      # Increment integer value
DECR counter                      # Decrement integer value

FLUSHALL                         # Remove all keys from all DBs
FLUSHDB                          # Remove all keys from current DB
ECHO "Hello Redis"               # Print message
TIME                             # Server time
PING                             # Test connection

EXISTS keyname                    # Check if key exists
DEL keyname                       # Delete key
EXPIRE keyname 60                 # Set key to expire in 60 seconds
TTL keyname                       # Time to live for key
PERSIST keyname                   # Remove expiration
RENAME oldkey newkey              # Rename key
TYPE keyname                      # Get key type
KEYS *pattern*                    # List keys by pattern
SCAN 0 MATCH *pattern* COUNT 100  # Incremental key scan
DUMP keyname                      # Serialize key
RESTORE keyname 0 serialized_val  # Restore key

MULTI
SET foo bar
INCR counter
EXEC
DISCARD                          # Cancel transaction
WATCH key1 key2                  # Watch keys for changes
UNWATCH

SUBSCRIBE channel1
PUBLISH channel1 "Hello World"
UNSUBSCRIBE channel1
PSUBSCRIBE news.*
PUNSUBSCRIBE news.*
PUBSUB CHANNELS                  # List active channels
PUBSUB NUMSUB channel1           # Subscribers count

SAVE                              # Synchronous save
BGSAVE                            # Background save
LASTSAVE                          # Last save timestamp
INFO                              # Server info and stats
DBSIZE                            # Number of keys in DB
MONITOR                           # Real-time command monitoring
CONFIG GET *                      # Show config
CONFIG SET maxmemory 256mb        # Set config

SETNX lock_key "locked"           # Simple lock
GETSET counter 0                  # Get old value and set new
MSET key1 val1 key2 val2          # Set multiple keys
MGET key1 key2                    # Get multiple keys
INCRBY counter 5                  # Increment by value
DECRBY counter 2                  # Decrement by value
BITCOUNT bitmap                   # Count set bits
PFADD hll user1 user2             # HyperLogLog add
PFCOUNT hll                       # HyperLogLog count