A generic guard process (to be implemented as a daemon) that client processes can interact with to gain locked access to keys primarily for updating values in key value storage systems like memcached.

Protocol is straightforward at the moment. All messages are CRLF terminated.

=============== Client commands

'LOCK '

If the key is not locked already, daemon replies back with 'LOCKED '. Otherwise if the same client has locked the key, reply is 'LOCK_ALREADY_ACQUIRED ' and if some other client has locked the key, reply is 'LOCK_EXISTS '.

'UNLOCK ' If the key is locked, daemon replies back with 'UNLOCKED '. If this is applied on a key not locked, reply is 'LOCK_NEVER_ACQUIRED '.

'QUIT ' If the client is already holding a lock to a key and hasn't unlocked it, the reply is 'LOCK_NOT_RELEASED' else the reply sent back is 'QUIT ' as well and the connection is closed

============ Dependencies

eventlet (Get it using easy_install or pip)