Comment by femto113

Only one thread can access the data at any given time, so it seems like most of the things you'd expect to be guaranteed by a single thread still are. I found this comment particularly interesting

   Unlike most databases the core data structure is the
   fastest part of the system. Most of the query time
   comes from parsing the REPL protocol and copying data
   to/from the network.

I wonder if anyone in the Redis ecosphere has explored a binary client server protocol, something that could be parsed/compiled on the client and then executed without parsing on the server, if the above is really true seems like that might offer even more perf gain than multithreading on the server.