System (CurveFS) • CurveFS: a high performance cloud native file systemUse Cases • Container • Database • Data apps(middleware/bigdata/ai) • Data backupContainer • Aggregates underlying storage container-native storageDatabase • Database services orchestrated in the cloud • Curve can backup / sync data to slave cloud • When master cloud failure happens, Database service can move to the slave horizontal / vertical scaling, auto config tuning, abnormal detection and schedule tuningStorage Engine Comparison (vs. Ceph) DATA CONSISTENT PROTOCOL CURVE (RAFT) CEPH WRITE SUCCESS majority write successful

Binlog 特性详情 提供与 MySQL 生态下游透明对接能力 产品体验 • 与 MySQL Binlog 完全一致体验 • 文件格式兼容：Binlog v4 row-based • SQL 指令兼容：show binary logs… • MySQL DUMP 协议 • 保证分布式事务完整性与顺序 • 同一连接串 已验证工具或系统 • MySQL Slave（change master） Answer：No and NO ONE Does进入 Kubernetes 生态 04 When in Rome, do as the Romans do.参数设置 容灾部署 CDC 备库重搭 备库重搭 SQL审计 只读实例

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CURVE Roadmap CURVE Community You can take awayDesign objectives App scenario & requires ● Database scenario ● Elastic block Storage for KVM / Kubernetes / iSCSI Design objectives ● Thin provisioning take awayPerformance in database scenario Solution architecture ● CURVE provides underlying distributed shared storage services ● Polardb for PostgreSQL provides database services Solution features seperation between storage and computation ● The call method is the same as that of the standalone database Performance test vs CEPH ● BenchmarkSQL transactions per minute increased by 39% ● In PGBench

–消息通过回调函数接收 –消息异步发送 ●Tag –MPI使用 ●Stream –官方不推荐30 WORKER ●worker是UCX通讯中的核心概念，它是一个进度引擎(progress engine) ●worker既不是协程也不是线程，而是一个状态机，可以通过不停地调用 ucp_worker_progress(worker)完成功能。如果你用过libuv或者libevent的evbuffer，它们有点