Design and Optimization of Bilibili Log Service 2.0 Using ClickHouse and OpenTelemetry
This article details Bilibili's evolution of its log system from an Elastic Stack‑based solution to a ClickHouse‑backed architecture with OpenTelemetry, describing the challenges of cost, stability, and scalability, the new components such as Log‑Agent, Log‑Ingester, and a custom visualization platform, and the performance gains and future directions.