Optimize the current cache mechanism such that when the user types the same letters as the current cached suggestion, we keep the suggestion displayed instead of sending a new request to the server. This will increase cache hits and reduce server load.

          Maybe we can use this cache mechanism to create a second set of hashes just for the current completion, so that when the user is typing the same letters as the suggestion, we do not send requests to the server and simply reuse the results from the cache.

Originally posted by @ggerganov in #15 (comment)