Redis CLI

Redis CLI

Interface for Redis cache, queues, and in-memory data.

Setup

# Check if installed
command -v redis-cli

# Install — macOS
brew install redis

# Install — Ubuntu/Debian
sudo apt install redis-tools

Connection

# Local
redis-cli

# Remote
redis-cli -h <host> -p <port>
redis-cli -h <host> -p <port> -a <password>

# With URL
redis-cli -u redis://:<password>@<host>:<port>/<db>

# Ping
redis-cli ping

Keys

# List keys (WARNING: be careful in production!)
redis-cli KEYS "prefix:*"        # pattern match
redis-cli SCAN 0 MATCH "user:*" COUNT 100   # safe for production

# Info for a key
redis-cli TYPE <key>
redis-cli TTL <key>              # remaining time (-1 = no expiration)
redis-cli OBJECT ENCODING <key>

# Delete
redis-cli DEL <key>
redis-cli DEL key1 key2 key3

# Expiration
redis-cli EXPIRE <key> <seconds>
redis-cli PERSIST <key>          # remove expiration

Strings

redis-cli SET <key> <value>
redis-cli SET <key> <value> EX 3600   # expires in 1h
redis-cli GET <key>
redis-cli MGET key1 key2 key3
redis-cli INCR <key>
redis-cli INCRBY <key> 10

Hashes

redis-cli HSET <key> <field> <value>
redis-cli HGET <key> <field>
redis-cli HGETALL <key>
redis-cli HDEL <key> <field>

Lists

redis-cli LPUSH <key> <value>
redis-cli RPUSH <key> <value>
redis-cli LRANGE <key> 0 -1     # all elements
redis-cli LLEN <key>

Sets

redis-cli SADD <key> <member>
redis-cli SMEMBERS <key>
redis-cli SCARD <key>            # count
redis-cli SISMEMBER <key> <member>

Info and Monitor

# General info
redis-cli INFO
redis-cli INFO memory
redis-cli INFO stats
redis-cli INFO keyspace

# Connected clients
redis-cli CLIENT LIST

# Monitor (see commands in real time — use with caution)
redis-cli MONITOR

# Database size
redis-cli DBSIZE

# Flush (WARNING!)
redis-cli FLUSHDB       # current database
redis-cli FLUSHALL      # all databases

Tips

• Use SCAN instead of KEYS in production (non-blocking)
• Use --pipe for bulk import
• Use --csv for CSV output
• Use --bigkeys to find large keys
• Use --latency to measure latency

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