ITPUB

Jul 16, 2023 · Big Data

How WeChat Reduced Query Latency from 1000ms to 100ms in Its Multi‑Dimensional Monitoring Platform

This article explains how the WeChat multi‑dimensional monitoring platform, which processes billions of data points daily, identified performance bottlenecks in its Druid‑based data layer and applied sub‑query splitting, Redis caching, and sub‑dimension tables to achieve over 85% cache hit rate and bring average query time down to around 100 ms.