The single-threaded architecture

Redis incorporates a single-threaded architecture, which is a distinctive design in the realm of databases and caches. While “single-threaded” may suggest that only one thread runs within the Redis process, this assumption is not entirely accurate. A Redis server comprises multiple threads dedicated to specific tasks, such as key expiration, statistics, and threaded I/O to handle concurrent connections. However, the primary focus is on the main thread responsible for executing commands and managing data storage and retrieval. This single-threaded design ensures that commands are processed sequentially, avoiding complex synchronization issues such as deadlocks and long-running locks. By eliminating interaction between different clients, this implementation reduces the number of stages data and instructions must pass through and enables immediate access to data, a crucial aspect for real-time execution.

With the main thread executing...