redis-server

TLDR

Start Redis server with default configuration

$ redis-server

Start with a configuration file

$ redis-server [/path/to/redis.conf]

Start on a specific port

$ redis-server --port [6380]

Start with password protection

$ redis-server --requirepass [password]

Start in daemonized mode (background)

$ redis-server --daemonize yes

Start with a specific data directory

$ redis-server --dir [/path/to/data]

Test configuration file syntax

$ redis-server [/path/to/redis.conf] --test-memory [megabytes]

SYNOPSIS

redis-server [configfile] [options]

redis-server is the Redis server daemon, an in-memory data structure store supporting strings, lists, sets, sorted sets, hashes, streams, and more. It provides high-performance key-value storage with optional persistence.
Redis supports two persistence modes: RDB snapshots (point-in-time snapshots at intervals) and AOF (append-only file logging every write). Both can be enabled simultaneously for maximum durability.
The server supports replication for high availability, with replicas automatically syncing from a master. Redis Sentinel provides automatic failover, while Redis Cluster enables horizontal scaling across multiple nodes.
Configuration can be specified via command-line options or a configuration file. Command-line options override config file settings.

PARAMETERS

--port number

Listen on specified port (default: 6379)

--bind address

Bind to specified IP address(es)

--daemonize yes|no

Run as daemon in background

--requirepass password

Require password for client connections

--dir path

Set working directory for data files

--dbfilename file

Set RDB snapshot filename

--appendonly yes|no

Enable append-only file persistence

--maxmemory bytes

Set maximum memory limit

--maxmemory-policy policy

Eviction policy when maxmemory reached

--loglevel level

Set log verbosity (debug, verbose, notice, warning)

--logfile path

Log to specified file

--replica-of host port

Start as replica of specified master

CAVEATS

By default, Redis binds to all interfaces (0.0.0.0), which may expose it to the network. In production, use --bind to restrict to specific addresses and --requirepass for authentication.
Redis stores data in memory. Without --maxmemory, it can consume all available RAM. Set appropriate limits and eviction policies for production use.
With default settings, Redis may lose up to 1 second of writes on crash (RDB mode). Enable AOF with appendfsync always for stronger durability guarantees at the cost of performance.

HISTORY

Redis was created by Salvatore Sanfilippo (antirez) in 2009. Originally standing for "Remote Dictionary Server," it quickly gained popularity as a high-performance caching and data structure server. Redis became part of Redis Ltd. (formerly Redis Labs) while remaining open source under BSD license.