How Redis handles Ctrl-C and shutdown signals

Databases trap SIGINT and SIGTERM so they can safely drain clients, preserve state, and avoid corrupting data during ordinary process termination

Fun fact: Redis, or any database. does not just stop when you hit `Ctrl+C` or when the OS decides to shut down. Databases need to handle termination with extreme care. This happens by trapping operating system signals like `SIGINT` and `SI