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nutcracker - Fast, light-weight proxy for memcached and Redis

NUTCRACKER(8) System Manager's Manual NUTCRACKER(8)


nutcracker - Fast, light-weight proxy for memcached and Redis


nutcracker [options]


nutcracker, also known as twemproxy (pronounced "two-em-proxy"), is a fast and lightweight proxy for the memcached and Redis protocols.
It was primarily built to reduce the connection count on backend caching servers, but it has a number of features, such as:
Maintains persistent server connections to backend servers.
Enables pipelining of requests and responses.
Supports multiple server pools simultaneously.
Shard data automatically across multiple servers.
Supports multiple hashing modes including consistent hashing and distribution.
High-availability by disabling nodes on failures.
Observability through stats exposed on stats monitoring port.


-h, --help
Show usage information and exit.
-V, --version
Show version and exit.
-t, --test-conf
Test configuration for syntax errors and exit.
-D, --describe-stats
Print stats description and exit.
-v, --verbose=N
Set logging level to N. (default: 5, min: 0, max: 11)
-o, --output=filename
Set logging file to filename.
-c, --conf-file=filename
Set configuration file to filename.
-s, --stats-port=port
Set stats monitoring port to port. (default: 22222)
-a, --stats-addr=address
Set stats monitoring IP to address. (default:
-i, --stats-interval=interval
Set stats aggregation interval in msec to interval. (default: 30000 msec)
-m, --mbuf-size=size
Set size of mbuf chunk in bytes to size. (default: 16384 bytes)
-d, --daemonize
Run as a daemon.
-p, --pid-file=filename
Set pid file to filename.


memcached(8), redis-server(1)


nutcracker was written by Twitter, Inc.
June 13, 2013 Debian Sid