Tech Freedom Circle

Jul 17, 2025 · Databases

What Happens Under the Hood When a Redis Command Executes? – A Deep Dive into Redis’s Reactor Model

This article explains the three‑stage execution flow of a Redis command—connection establishment, command processing, and result return—detailing how the single‑threaded reactor pattern drives event handling, how commands are parsed and dispatched, and how the output is sent back, with code snippets and a comparison to Netty’s multithreaded reactor.