distributed timer

Tencent Cloud Developer

Mar 31, 2021 · Backend Development

Design and Implementation of a Distributed Timer Service at Tencent

The article details Tencent’s design and implementation of a distributed timer service—using a multi‑level time‑wheel stored in a KV system, a scheduler daemon, broker, and notifier—to support reliable, low‑latency delayed tasks such as order closure and SMS activation, while addressing isolation, rate limiting, disaster recovery, and delivery guarantees.