2024数据库TiDB 技术演进及生态发展

❏❏TiDB❏TiDB❏TiDB❏TiDB“202050050%202595%的实时数据。“20201.5GB4TB40TB的数据，每个小型的工厂会产生1PB的数据”

Redhat300 MongoDB90 ElasticSearch60 Cloudera20 Confluent（Kafka）D1.25亿美元融资 Databricks（Spark）E2.5亿美元融资 RedisLabsE6000万美元融资 CockRoachLabsC5500万美元融资 PingCAP（TiDB）C5000万美元融资立势-TiDB回归到2015，重新设计一个数据库，我SQL（ACIDMySQL+->TiDBCostMySQLDrivers(e.g.MySQLDrivers(e.g.MySQL APIPhysicalAPIPhysicalPlanKV按照等长大小策略自动分裂分片（96

TiKVKey

ID:RegionXRange:[start_key,KVID:RegionXRange:[start_key,Seek

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96MBRegion1Region1Region1Region1Region1Region1Region2Region2leader4.0followerTiKVTiKVNodeStoreTiKVNodeStoreTiKVNodeStoreLet’ssay,theamountofdatawithinTiKVNodeStoreTiKVNodeStoreTiKVNodeStoreLet’ssay,theamountofdatawithinRartTiKVTiKVNodeStore1TiKVNodeStoreTiKVNodeStoreRegion1willbesplitintotwosmaller(theleaderofRegion1sendsaSplitcommandasaspeciallogtoitsreplicasviatheRaftprotocol.OncetheSplitcommandissuccessfullycommittedbyRaft,thatmeanstheregionhasbeensuccessfullysplit.)TiKVTiKVNodeStore1TiKVNodeStoreTiKVNodeStoreTiKVNodeStoreTiKVTiKVNodeStore1TiKVNodeStoreTiKVNodeStoreTiKVNodeStoreTiKVTiKVNodeStore1TiKVNodeStoreTiKVNodeStoreTiKVNodeStorePD:“OK,Node1,deleteyourlocalreplicaofRegion分片数量、Leader

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IDCRegion

RegionNode

RegionHTAPPD全局受时~4MtimestampsTiKV节点分配单独区域存放锁信息（CFlock）GooglePercolatorTiKVKV也支持悲观事务模型（3.0+版本默认隔离级别:SnapshotTiDBMySQLSQL支持，DML&tidb-TiKVtidb-TiKVPhysicalPlanCostRBO&TOP-N、TiDB3.0SQLTitanvalueWiscKey优化器准确性提升，快速统计信息等：Fast/Increamental悲观锁：PessimisticLockSQL执行计划管理与绑定：SQLPlan4.5x提升TPC-C1.5x提升SysbenchHTAP我们认为，HTAP是针对业务来说，DB

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retrievedatafrom RaftLearnerRaftLearnerRaftLearnerMVCC提供强一致LabelAP/TPRaftETL3010Query100%HTAPTiDBGithub20000stars,NewSQLGithub：400contributors2018年度全球最佳开源软件奖（byCNCFKey-Value数据库项目CNCFBigdataCNCF基金会统计的旗下开