Mcrouter
Memcached protocol router for scaling memcached deployments
Mcrouter is an open-source memcached protocol router developed by Facebook to scale and manage large memcached deployments efficiently. It acts as an intermediary between clients and memcached servers, handling routing, load balancing, and failover, thereby abstracting the complexity of managing numerous cache servers. Mcrouter is designed to be a drop-in replacement, requiring minimal or no changes to existing client configurations. It supports the standard memcached ASCII protocol, making it compatible with existing memcached clients. At Facebook, Mcrouter handles a substantial portion of cache traffic, demonstrating its capability to operate at scale.