ApsaraDB RDS:[New features/New specifications] ApsaraDB RDS for MySQL provides general-purpose database proxies and persistent connections free of charge

Effective date

December 15, 2023

General-purpose database proxies (free of charge)

Introduction

A database proxy of ApsaraDB RDS for MySQL serves as a network proxy that resides between your database system and your application and receives all requests from your application. A database proxy supports read/write splitting, persistent connections, transaction splitting, connection pooling, and SSL encryption to reduce loads on your primary RDS instance. A database proxy has multiple benefits, including easy O&M, ease of use, high availability, and high performance.

ApsaraDB RDS for MySQL provides general-purpose database proxies and dedicated database proxies. General-purpose database proxies are provided free of charge. For more information about the differences between the two types of database proxies and supported features, see What are database proxies?

Scenarios

• The primary RDS instance is heavily loaded due to a large number of requests that are encapsulated in transactions.

• The primary RDS instance is heavily loaded due to an excessively large number of connections.

• Read/write splitting is required.

• Read-only workloads and workloads that need to be isolated are processed.

• Most of your workloads require short-lived connections.

• The capability to prevent transient connections that are caused by O&M operations such as switchovers is required.

Prerequisites

The RDS instance is a primary RDS instance and meets the following requirements:

• Version requirements:

  Major engine version	RDS edition	Minor engine version
  MySQL 8.0	RDS Enterprise Edition	20191204 or later
  	RDS High-availability Edition	20190915 or later
  	RDS Cluster Edition	No requirements
  MySQL 5.7	RDS Enterprise Edition	20191128 or later
  	RDS High-availability Edition	20190925 or later
  	RDS Cluster Edition	No requirements
  MySQL 5.6	RDS High-availability Edition	20200229 or later

• Region requirements: The RDS instance for which you want to enable the database proxy feature does not reside in Hangzhou Zone C or Hangzhou Zone D.

Billing rules

• General-purpose database proxies are provided free of charge.

• Dedicated database proxies are billed based on the pay-as-you-go billing method. For more information, see Billing rules for database proxies.

Enable the database proxy feature

For more information, see Enable the database proxy feature.

Persistent connections (free of charge)

Introduction

When O&M operations that trigger automatic switchovers are performed on an RDS instance, the connections between your application and database proxies of the RDS instance are temporarily interrupted. This affects your services. You can configure persistent connection settings for the RDS instance to keep connections alive, prevent service interruptions, improve instance availability, and reduce maintenance costs. For more information, see Introduction.

Prerequisites

Your RDS instance meets the following requirements:

• The RDS instance runs MySQL 5.6, MySQL 5.7, or MySQL 8.0.

• The RDS instance runs RDS High-availability Edition.

• The RDS instance uses cloud disks.

• The database proxy feature is enabled for the RDS instance, and the database proxy version is 1.14.5_20231207 or later. For more information, see Enable the database proxy feature.

Billing rules

Persistent connections are provided free of charge.

Configure persistent connection settings

For more information, see Configure persistent connection settings.