TiDB, an open-source, distributed NewSQL database, can experience write performance degradation for several reasons. This troubleshooting guide discusses write performance degradation related to the RocksDB built-in write stall feature. RocksDB is an open-source, mature, and high-performance key-value store. It is optimized for fast, low latency storage such as flash drives and high-speed disk drives.
We will also discuss how to resolve this issue in TiKV, a highly scalable, low latency, and easy-to-use key-value database that uses RocksDB as its storage engine.