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Mcrouter is a memcached protocol router for scaling memcached deployments.
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README.md

Mcrouter Build Status

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

New! Ubuntu package available

Currently, we support Ubuntu Xenial (16.04) and Bionic (18.04) amd64. Here is how to install it:

Add the repo key:

$ wget -O - https://facebook.github.io/mcrouter/debrepo/xenial/PUBLIC.KEY | sudo apt-key add

For Xenial: add the following line to apt sources file /etc/apt/sources.list

deb https://facebook.github.io/mcrouter/debrepo/xenial xenial contrib

For Bionic: add the following line to apt sources file /etc/apt/sources.list

deb https://facebook.github.io/mcrouter/debrepo/bionic bionic contrib

Update the local repo cache:

$ sudo apt-get update

Install mcrouter:

$ sudo apt-get install mcrouter

Installing From Source

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

Mcrouter depends on folly, wangle, fizz, and 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) 2016, Facebook, Inc.

Licensed under the MIT license: https://github.com/facebook/mcrouter/blob/master/LICENSE

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