Changed description from

A buffered Meta Text protocol client for single servers and clusters.

A client library for a Memcached cluster. Memcached is an in-memory key-value
store typically used as a distributed and shared cache. Clients connect to a
group of Memcached servers and perform out-of-band caching for things like
SQL results, rendered pages, or third-party APIs.

It uses the Memcached Meta Text protocol and requires memcached 1.6.0 or
newer. Username/password authentication is supported through memcached's
@-Y authfile@ mode; the binary protocol and SASL authentication are no longer
supported. It supports connecting to a single, or a cluster of Memcached
servers. When connecting to a cluster, consistent hashing is used for routing
requests to the appropriate server. Timeouts, retrying failed operations, and
failover to a different server are all supported, as is Amazon ElastiCache
auto discovery.

Multi-get is supported through the pipelined @getMany@. Keys containing
whitespace or control bytes are sent using the protocol's base64 binary-key
mode.

Basic usage is:

> import qualified Database.Memcache.Client as M
>
> mc <- M.newClient [M.ServerSpec "localhost" "11211" M.NoAuth] M.def
> M.set mc "key" "value" 0 0
> v <- M.get mc "key"

You should only need to import 'Database.Memcache.Client', but other modules
are exposed for lower-level use. Version 0.4 is a breaking change from 0.3;
see the changelog for details.