These are Diego's meeting notes for 2011-03-30.
Option 1: Cache
- memcached compatibility
- Implement their RPCs: need operations like increment, prepend
- Implement their TCP protocol, which should be very similar to that of TcpTransport.
- Unfortunately, it appears to takes deep knowledge of the RPCs to figure out the number of bytes in the request.
- Implement their simple UDP protocol. This should use the existing Driver interface and would be like a very stripped down version of FastTransport.
- Disable the coordinator.
- Memcached libraries handle all necessary cluster management, so the coordinator is not necessary.
- Masters should not enlist with the coordinator. They should instead start with exactly one table.
- Build a userspace 10GigE Driver for a strategically chosen NIC.
- Make RPCs more robust.
- Hosts should be able to recover from the other end of a session failing.
- RPCs need to time out eventually (this probably doesn't need to be very aggressive).
- Update the log cleaner (garbage collector).
- We'll need an eviction policy for when masters fill up (memcached uses LRU).
- One cheap and reasonable strategy might be to free the oldest segment in its entirety.
- We'll need an eviction policy for when masters fill up (memcached uses LRU).