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

SQL Authority

It's understood that by following the evolution from centralized databases to distributed ones, the user ID authentication mechanism has undergone dramatic changes. Similarly, any logic database provided by Apache ShardingSphere does not exist in a certain database resource, so ShardingSphere-Proxy is required to centralize the processing of user permission verification.

In the previous chapter, in terms of user login authentication, we explained that if the user specifies the schema to be connected, ShardingSphere can determine whether the user has the permissions based on the authorization information. How can it do that?

In this chapter, we will showcase Apache ShardingSphere's SQL Authority feature and its scalability.

Defining SQL Authority

We can describe SQL Authority like this: after receiving a user's SQL command, Apache ShardingSphere checks whether the user has authority based on the data type and data scope requested by the command...