Simple server in C++. Reads a message with the shape "get <text> <number>" from a socket and replies with the MD5 hash of the text after sleeping number miliseconds.
It manages multi-threading using a thread pool, and has a LRU cache. The port for communication and the cache size are parameters of the program.
The server can be closed with the SIGTERM signal and the cache emptied with the SIGUSR1 signal.