memcached
high-performance, distributed memory caching system
TLDR
Start memcached
$ memcached
Start with specific memory$ memcached -m [256]
Listen on specific port$ memcached -p [11211]
Run as daemon$ memcached -d -u [memcache]
Verbose output$ memcached -vv
Limit connections$ memcached -c [1024]
SYNOPSIS
memcached [options]
DESCRIPTION
memcached is a high-performance, distributed memory caching system. It stores key-value pairs in RAM to reduce database load and speed up dynamic web applications.memcached uses a simple protocol and is widely used for caching database queries, API responses, and session data.
PARAMETERS
-p port
TCP port (default 11211).-m MB
Memory limit in megabytes.-c connections
Max simultaneous connections.-d
Run as daemon.-u user
Run as user.-l ip
Listen address.-v, -vv
Verbose output.-t threads
Number of threads.
PROTOCOL COMMANDS
$ set key 0 3600 5\r\nvalue\r\n # Store
get key\r\n # Retrieve
delete key\r\n # Remove
incr key 1\r\n # Increment
stats\r\n # Statistics
get key\r\n # Retrieve
delete key\r\n # Remove
incr key 1\r\n # Increment
stats\r\n # Statistics
INSTALL
sudo apt install memcached
sudo dnf install memcached
sudo pacman -S memcached
sudo apk add memcached
sudo zypper install memcached
brew install memcached
nix profile install nixpkgs#memcached
CAVEATS
No persistence (RAM only). No authentication by default. LRU eviction when full. Not for large values (1MB limit).
HISTORY
memcached was developed by Brad Fitzpatrick at LiveJournal in 2003 to reduce database load. It became foundational for web scaling.
SEE ALSO
redis-cli(1)