Nearly all functions return a \ ``memcached_return_t``\ value.
This value can be translated to a printable string with memcached_strerror(3).
-Partitioning based on keys is testsed in the library. Using the key partioning
-functions it is possible to group sets of object onto servers.
+Objects are stored on servers by hashing keys. The hash value maps the key to a particular server. All clients understand how this hashing works, so it is possibly to reliably both push data to a server and retrieve data from a server.
+
+Group keys can be optionally used to group sets of objects with servers.
+
+Namespaces are supported, and can be used to partition caches so that multiple applications can use the same memcached servers.
\ ``memcached_st``\ structures are thread-safe, but each thread must
contain its own structure (that is, if you want to share these among