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Fernando Ipar / Percona University Montevideo / April 2019 TiDB 101
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Fernando Ipar / Percona University Montevideo / April 2019
TiDB 101
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© The Pythian Group Inc., 2019
●Internal Principal Consultant @ Pythian.
●Pager-carrying, buck stops at my team.
●OSDB Practice (MySQL/MariaDB, MongoDB, Cassandra, …).
●19 years of MySQL experience.
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About me
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© The Pythian Group Inc., 2019 "3
TiDB
Created by PingCAP (Founded in April 2015 by 3 Infrastructure Engineers)
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© The Pythian Group Inc., 2019
●SQL-based (MySQL[0] protocol).
●Distributed (ACID).
●Transactional (Snapshot Isolation, advertised as REPEATABLE-READ).
●Inspired on Google’s Spanner and F1.
●HTAP workloads.
●Open Source (Open Core).
●RocksDB for storage (though Storage Engine API exists)[1].
●“15+ Petabytes in 300+ Companies”[2]
[0] https://github.com/pingcap/docs/blob/master/sql/mysql-compatibility.md
[1] https://blog.pythian.com/tag/myrocks/
[2] https://www.pingcap.com/success-stories/https://www.pingcap.com/success-stories/
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TiDB Overview
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© The Pythian Group Inc., 2019
●You need a sharded MySQL.
●You have a sharded MySQL but have found out the shard key does not match all query use cases (who would have thought?!).
●Your data set does not fit on a single machine and your query volume is rather low.
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Good Use Cases
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© The Pythian Group Inc., 2019
●Your workload is very latency-sensitive.
●Your data fits in a single server.
●You’re closer to OLTP than OLAP.
●You have very large transactions.
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Poor Use Cases
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TiDB Overview - Architecture
Image Credit: https://github.com/pingcap/docs/blob/master/architecture.md
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© The Pythian Group Inc., 2019 "8
TiKV
Image Credit: https://github.com/tikv/tikv
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© The Pythian Group Inc., 2019 "9
TiDB: OLTP + Ad Hoc OLAP
Image Credit: https://www.slideshare.net/morgo/tidb-introduction
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© The Pythian Group Inc., 2019 "10
TiDB: SQL Parser and Coprocesor.
Image Credit: https://www.slideshare.net/morgo/tidb-introduction
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© The Pythian Group Inc., 2019 "11
TiDB: Replicating from MySQL
Image Credit: https://github.com/pingcap/docs/blob/master/tools/syncer.md
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© The Pythian Group Inc., 2019 "12
https://pingcap.com/tidb-academy/
I have certification vouchers for questions I can’t answer right now or otherwise interesting questions.
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© The Pythian Group Inc., 2019 "13
THANK YOU
