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Architect
Architect
Jul 5, 2023 · Backend Development

Evolution of Bilibili's Relationship Chain Service: From MySQL to KV Storage, Multi‑Layer Caching, and Hotspot Resilience

The article details how Bilibili's relationship‑chain service scaled from a MySQL‑based design to a distributed KV store, introduced successive caching layers (memcached, Redis hash, Redis KV, bloom filter), and implemented hotspot mitigation techniques to sustain near‑million QPS traffic while ensuring high availability and data consistency.

MySQLRedisbackend architecture
0 likes · 16 min read
Evolution of Bilibili's Relationship Chain Service: From MySQL to KV Storage, Multi‑Layer Caching, and Hotspot Resilience
Bilibili Tech
Bilibili Tech
Jun 6, 2023 · Backend Development

Evolution of Bilibili Relationship Chain Service: From MySQL to KV Storage and Multi‑Layer Caching

Bilibili’s relationship‑chain service, which handles follows, blacklists, whispers and mutual follows, migrated from a single sharded MySQL instance to an internal distributed KV store and introduced a three‑tier cache (memcached, Redis and a Bloom filter) plus automated hotspot routing, achieving near‑million QPS, lower latency, and preparing for multi‑tenant reuse.

KV StoreMySQLRedis
0 likes · 17 min read
Evolution of Bilibili Relationship Chain Service: From MySQL to KV Storage and Multi‑Layer Caching