What's an event library, and how was the original Redis event library implemented?
The following Redis documents were written by the creator of Redis, Salvatore Sanfilippo, early in the development of Redis (c. 2010), and do not necessarily reflect the latest Redis implementation.
Guide to the original implementation of Redis strings
A description of the Redis virtual memory system that was deprecated in 2.6. This document exists for historial interest.
A design for the RDB format written in the early days of Redis