Create database upper level standard . . . . . . . . . . . . . . . . . . 4 1.2.2 Enhance: Database computing enhancement engine . . . . . . . . . . . . . . . 4 1.2.3 Pluggable: Building database function Scenarios . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35 Complex primary‐secondary database architecture . . . . . . . . . . . . . . . . . 35 3.3.5 Related References . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36 Primary database . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36 Secondary database . . . . . . . . . . . . . . . . . . . . . . . . .

Create database upper level standard . . . . . . . . . . . . . . . . . . 5 1.2.2 Enhance: Database computing enhancement engine . . . . . . . . . . . . . . . 5 1.2.3 Pluggable: Building database function Scenarios . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36 Complex primary‐secondary database architecture . . . . . . . . . . . . . . . . . 36 3.3.5 Related References . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37 Primary database . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37 Secondary database . . . . . . . . . . . . . . . . . . . . . . . . .

2 Distributed Transaction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 1.2.3 Database Governance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 2 Quick Start 5 2 . . . . . . . . . . . . . . . . . . . 68 Primary Database . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68 Replica Database . . . . . . . . . . . . . . . . . . . . . . . . . Goal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70 3.4.4 Management . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70 Navigation . . .

. . 2 2 Design Philosophy 4 2.1 Connect: Create database upper level standard . . . . . . . . . . . . . . . . . . . . . . 5 2.2 Enhance: Database computing enhancement engine . . . . . . . . . . . . . . . . . . . 5 2.3 Pluggable: Building database function ecology . . . . . . . . . . . . . . . . . . . . . . . 5 2.3.1 L1 Kernel Layer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Scenarios . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40 Complex primary‐secondary database architecture . . . . . . . . . . . . . . . . . 40 8.3.5 Related References . . . . . . . . . .

. . 2 2 Design Philosophy 4 2.1 Connect: Create database upper level standard . . . . . . . . . . . . . . . . . . . . . . 5 2.2 Enhance: Database computing enhancement engine . . . . . . . . . . . . . . . . . . . 5 2.3 Pluggable: Building database function ecology . . . . . . . . . . . . . . . . . . . . . . . 5 2.3.1 L1 Kernel Layer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Scenarios . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40 Complex primary‐secondary database architecture . . . . . . . . . . . . . . . . . 40 8.3.5 Related References . . . . . . . . . .

SQL92 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23 4.2 Management . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23 4.2.1 Background . . . . . . . . . . . . . . . . . . . 53 Primary Database . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53 Replica Database . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60 Production Database . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60 Shadow Database . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23 4.2 Cluster Management . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23 4.2.1 Background . . . . . . . . . . . . . . . . . . . 55 Primary Database . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55 Replica Database . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63 Production Database . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63 Shadow Database . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . 47 Primary Database . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47 Replica Database . . . . . . . . . . . . . . . . . . . . . . . . . Goal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49 4.5.4 Management . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49 Navigation . . . Use Norms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65 Shadow database . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65 Shadow algorithm . .

ShardingSphere ElasticJob document Through the functions of flexible scheduling, resource management and job management, it creates a distributed scheduling solution suitable for Internet scenarios, and provides can release operators too, so that they do not have to worry about jobs high availability and management, and can automatic operation by simply adding servers. ElasticJob is a lightweight, decentralized 2 2 Features • Elastic Schedule – Support job sharding and high availability in distributed system – Scale out for throughput and efficiency improvement – Job processing capacity is flexible and

of parameters manually and retrieving the results. It provides a simple API to interact with the database. It also provides support for custom SQL, stored procedures and advanced mappings. It was formerly platform such as Java, Ruby, and C# for Microsoft .NET. Independent Interfaces − MyBatis provides database-independent interfaces and APIs that help the rest of the application remain independent of any encapsulates SQL in the form of stored procedures so that business logic can be kept out of the database, and the application is more portable and easier to deploy and test. Supports inline SQL − No pre-compiler