:sig
String memcache_command(u64 connection, String command)

:params
connection : connection handle
command : string containing the Memcache command
return value : string containing the Memcache server's response

:see
>memcache

:content
Executes a raw command on an open Memcache connection and returns the server response as a string.

This is the low-level escape hatch for Memcache operations that are not covered by the dedicated helpers.

:example
print("memcache_command is resource-bound; configure the service or connection, then call it in request code.\n");