关系型数据库 ● NoSQL ● 中间件 ● NewSQL 1970s 2010 2015 Present MySQL PostgreSQL Oracle DB2 ... Redis HBase Cassandra MongoDB ... Google Spanner Google F1 TiDB RDBMS NoSQL NewSQL NewSQL 是什么 ● 水平扩展 ● 事务 gRPC gRPC gRPC 数据分片 ● Hash Based Partition ○ Redis ○ 不利于范围 Scan ● Range Based Partition ○ Hbase ○ Range 需要足够大且足够小 Storage stack 1/2 ● TiKV is the underlying storage layer ● Physically, data

● Middleware & Proxy ● NewSQL 1970s 2010 2015 Present MySQL PostgreSQL Oracle DB2 ... Redis HBase Cassandra MongoDB ... Google Spanner Google F1 TiDB RDBMS NoSQL NewSQL Architecture TiKV TiKV