Tencent Cloud Developer

Aug 1, 2019 · Databases

FeatureKV: A High-Performance Key-Value Storage System for WeChat's Billion-Scale Challenges

FeatureKV, WeChat’s high‑performance key‑value store, handles one‑billion queries per second and ingests a billion keys per hour by separating write‑only DataSvr from read‑only KVSvr, supporting in‑memory, indexed, and block‑indexed tables, scaling horizontally, guaranteeing eventual consistency with versioned reads, and delivering up to 11 billion reads per second with sub‑15 ms latency.