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Reviewed By: [email protected]

Subscribers: alikhtarov

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# Mcrouter

Mcrouter is a memcached protocol router for scaling memcached
(http://memcached.org/) deployments. It's a core component of cache
infrastructure at Facebook and Instagram where mcrouter handles almost
5 billion requests per second at peak.

Mcrouter is developed and maintained by Facebook.

See https://github.com/facebook/mcrouter/wiki to get started.

## Quick start guide

See https://github.com/facebook/mcrouter/wiki/mcrouter-installation for more
detailed installation instructions.

Mcrouter depends on folly (https://github.com/facebook/folly) and
FBThrift (https://github.com/facebook/fbthrift).

The installation is a standard autotools flow:

$ autoreconf --install
$ ./configure
$ make
$ sudo make install
$ mcrouter --help

Assuming you have a memcached instance on the local host running on port 5001,
the simplest mcrouter setup is:

$ mcrouter \
--config-str='{"pools":{"A":{"servers":["127.0.0.1:5001"]}},
"route":"PoolRoute|A"}' \
-p 5000
$ echo -ne "get key\r\n" | nc 0 5000

(nc is the GNU Netcat, http://netcat.sourceforge.net/)

## Features

+ Memcached ASCII protocol
+ Connection pooling
+ Multiple hashing schemes
+ Prefix routing
+ Replicated pools
+ Production traffic shadowing
+ Online reconfiguration
+ Flexible routing
+ Destination health monitoring/automatic failover
+ Cold cache warm up
+ Broadcast operations
+ Reliable delete stream
+ Multi-cluster support
+ Rich stats and debug commands
+ Quality of service
+ Large values
+ Multi-level caches
+ IPv6 support
+ SSL support

## Links

Documentation: https://github.com/facebook/mcrouter/wiki
Engineering discussions and support: https://www.facebook.com/groups/mcrouter

## License

Copyright (c) 2014, Facebook, Inc.
All rights reserved.

Licensed under a BSD license:
https://github.com/facebook/mcrouter/blob/master/LICENSE

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