Redis Persistence, Replication, and Cluster Cheat Sheet

LASTSAVE

# Return the Unix timestamp of last successful save.

BGREWRITEAOF

# Compact the append-only file in the background.

WAIT 1 5000

# Block until writes reach a minimum number of replicas or timeout.

WAITAOF 1 1000 5000

# Wait for AOF persistence conditions when supported.

REPLICAOF 10.0.0.10 6379

# Turn the current node into a replica of a primary.

REPLICAOF NO ONE

# Stop replicating and promote current node to primary.

ROLE

# Return whether this node is primary, replica, or sentinel and related metadata.

FAILOVER

# Ask a primary to hand off leadership to a replica.

PSYNC ? -1

# Replication handshake command used internally by replicas.

EVAL "return redis.call('GET', KEYS[1])" 1 user:1:name

# Execute Lua server-side atomically.

EVALSHA <sha1> 1 user:1:name

# Execute a previously loaded Lua script.

SCRIPT LOAD "return 1"

# Cache a Lua script and return its SHA1.

SCRIPT EXISTS <sha1>

# Check whether one or more scripts are cached.

SCRIPT FLUSH

# Remove all cached Lua scripts.

FUNCTION LOAD "#!lua name=mylib
redis.register_function('ping', function() return 'pong' end)"

# Load a function library into the server.

FUNCTION LIST

# Inspect currently loaded libraries and functions.

FCALL ping 0

# Execute a loaded Redis function.

FUNCTION DELETE mylib

# Remove a loaded function library.

CLUSTER INFO

# Read cluster state, slot coverage, and message counters.

CLUSTER NODES

# Show known cluster nodes and flags.

CLUSTER SLOTS

# Return slot-to-node ownership information.

CLUSTER KEYSLOT user:{42}:profile

# Compute the cluster slot for a key.

CLUSTER COUNTKEYSINSLOT 1234

# Count how many keys exist in one slot.

READONLY

# Tell a cluster replica connection to serve reads.

READWRITE

# Disable READONLY mode on a cluster connection.

ASKING

# Send ASKING before a redirected command during slot migration.