Book Image

A Definitive Guide to Apache ShardingSphere

By : Trista Pan, Zhang Liang, Yacine Si Tayeb
Book Image

A Definitive Guide to Apache ShardingSphere

By: Trista Pan, Zhang Liang, Yacine Si Tayeb

Overview of this book

Apache ShardingSphere is a new open source ecosystem for distributed data infrastructures based on pluggability and cloud-native principles that helps enhance your database. This book begins with a quick overview of the main challenges faced by database management systems (DBMSs) in production environments, followed by a brief introduction to the software's kernel concept. After that, using real-world examples of distributed database solutions, elastic scaling, DistSQL, synthetic monitoring, database gateways, and SQL authority and user authentication, you’ll fully understand ShardingSphere's architectural components, how they’re configured and can be plugged into your existing infrastructure, and how to manage your data and applications. You’ll also explore ShardingSphere-JDBC and ShardingSphere-Proxy, the ecosystem’s clients, and how they can work either concurrently or independently to address your needs. You’ll then learn how to customize the plugin platform to define personalized user strategies and manage multiple configurations seamlessly. Finally, the book enables you to get up and running with functional and performance tests for all scenarios. By the end of this book, you’ll be able to build and deploy a customized version of ShardingSphere, addressing the key pain points encountered in your data management infrastructure.
Table of Contents (18 chapters)
1
Section 1: Introducing Apache ShardingSphere
4
Section 2: Apache ShardingSphere Architecture, Installation, and Configuration
10
Section 3: Apache ShardingSphere Real-World Examples, Performance, and Scenario Tests

Configuration – read/write splitting

In this section, we will introduce you to DistSQL's management syntax for read/write splitting rules:

  1. First, let's create the read/write splitting rules:
    CREATE READWRITE_SPLITTING RULE ruleName (
        WRITE_RESOURCE=resourceName,
        READ_RESOURCES(resourceName [ , resourceName] *),
        TYPE(NAME=algorithmName, PROPERTIES("key"="value" [, "key"="value" ]* )
    );

This is the standard syntax of the read/write splitting rule. The DistSQL syntax with read/write splitting also provides configuration methods for dynamic data sources.  

To modify the syntax of the read/write splitting rule, replace CREATE with ALTER and keep the other parts unchanged.

  1. Next, we will learn how to drop read/write splitting rules. The delete syntax is as follows:
    DROP READWRITE_SPLITTING RULE ruleName, [ruleName]*
  2. Now, let...