Schema Routing Rules ..... 98 ApplyRoutingRules ..... 98 Syntax ..... 98 Sharding ..... 99 Overview ..... 99 Sharding scheme ..... 99 Resharding ..... 100 Problems with DROP TABLE ..... 101 Architecture ..... 132 Database Access Model ..... 132 Sharded keyspaces require a VSchema ..... 134 Sharding Model ..... 134 Vindexes ..... 134 Sequences ..... 134 Reference tables ..... 135 Per-Keyspace configuration 279 LDAP authentication 279 Requirements 279 Configuration 280 Region-based Sharding ..... 281 Preparation ..... 281 Schema ..... 281 Region Vindex ..... 282 Start the Cluster

Changes ..... 27 FAQ ..... 27 Configuration ..... 27 Does the application need to know about the sharding scheme underneath Vitess? ..... 27 I cannot start a cluster, and see these errors in the logs: Changing your schema 51 Schema Routing Rules 53 ApplyRoutingRules 53 Syntax 53 Sharding 54 Overview 54 Sharding scheme 54 Resharding 55 Topology Service 56 Requirements and usage 56 Global VSchemas describe how to shard data ..... 80 Sharded keyspaces require a VSchema ..... 80 Sharding Model ..... 80 Vindexes ..... 81 Sequences ..... 81 Reference tables ..... 81 Configuration

Clickhouse in minutes ## PTS ## Provider Transform Sinker • Major Provider Must Listen • Merge sharding tables SolidKey ## Typical Provider Config Type: mysql, // mysql, mongodb, redis Listen: binlog Height Clickhouse Table:user ID Name Age Height ## PTS ## Provider Transform Sinker • Merge sharding tables Table: name ID Name Table: name\_201901 ID Name ![Image](/uploads/documents/2/0/0

Circuit Breaker ..... 24 Request Limit ..... 24 4.3 Sharding ..... 24 4.3.1 Background ..... 24 Vertical Sharding ..... 25 Horizontal Sharding ..... 26 4.3.2 Challenges ..... 26 4.3.3 Goal . Overview ..... 27 Table ..... 27 Data Node ..... 29 Sharding ..... 30 Inline Expression ..... 31 Distributed Primary Key ..... 34 Hint Sharding Route ..... 36 4.3.5 Use Norms ..... 37 Background Algorithm ..... 126 Introduction ..... 126 Usage ..... 126 Metadata Repository ..... 126 Sharding Algorithm ..... 127 Key Generate Algorithm ..... 132 Load Balance Algorithm ..... 133 Encryption

d75e6cc5e4cce30db262683da526/p20_1.jpg) Запись в Distributed таблицу Асинхронно в шард номер sharding_key % 3 INSERT INTO local_table Шард 1 Шард 2 Шард 3 ## Когда нельзя ломаться Хочется защититься

SQL92 ..... 20 4.1.5 DB Protocol ..... 20 4.2 Sharding ..... 20 4.2.1 Background ..... 20 Vertical Sharding ..... 21 Horizontal Sharding ..... 22 4.2.2 Challenges ..... 23 4.2.3 Goal . Overview ..... 24 Table ..... 24 Data Node ..... 25 Sharding ..... 26 Inline Expression ..... 28 Distributed Primary Key ..... 31 Hint Sharding Route ..... 33 4.2.5 Use Norms ..... 33 Background ShardingSphere-JDBC ..... 67 5.1.1 Introduction ..... 67 5.1.2 Comparison ..... 68 5.1.3 Usage ..... 69 Data Sharding ..... 69 Transaction ..... 80 Governance ..... 89 5.1.4 Configuration Manual ..... 95 Java

Circuit Breaker ..... 24 Request Limit ..... 24 4.3 Sharding ..... 24 4.3.1 Background ..... 24 Vertical Sharding ..... 25 Horizontal Sharding ..... 26 4.3.2 Challenges ..... 27 4.3.3 Goal ... Overview ..... 27 Table ..... 27 Data Node ..... 29 Sharding ..... 30 Inline Expression ..... 31 Distributed Primary Key ..... 35 Hint Sharding Route ..... 37 4.3.5 Use Norms ..... 37 Background Algorithm ..... 130 Introduction ..... 130 Usage ..... 130 Metadata Repository ..... 130 Sharding Algorithm ..... 131 Key Generate Algorithm ..... 136 Load Balance Algorithm ..... 137 Encryption

2.4 Procedure ..... 14 Features ..... 16 3.1 Sharding ..... 16 3.1.1 Background ..... 16 Vertical Sharding ..... 17 Horizontal Sharding ..... 18 3.1.2 Challenges ..... 19 3.1.3 Goal . Related References ..... 20 3.1.6 Core Concept ..... 20 Table ..... 20 Data Nodes ..... 22 Sharding ..... 23 3.1.7 Limitations ..... 25 Stable Support ..... 25 Experimental Support ..... 27 Source ..... 138 Rules Introduction ..... 269 Usage ..... 269 Metadata Repository ..... 269 Sharding Algorithm ..... 271 Key Generate Algorithm ..... 278 Load Balance Algorithm ..... 283 Encryption