Choosing a Database Proxy for MySQL and MariaDB

This whitepaper discusses what database proxies are, what their use is and how to build a highly available and highly controllable MySQL and MariaDB database environment using modern proxies.

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Introducton

This whitepaper discusses what database proxies are, what their use is and how to build a highly available and highly controllable MySQL and MariaDB database environment using modern proxies.

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Table of contents

  • 1. Introduction
    • 1.1. What Is a Database Proxy?
    • 1.2. Proxy Types
      • 1.2.1. Layer 4 Proxies
      • 1.2.2. SQL-Aware Proxies
  • 2. Features of Advanced, SQL-Aware Proxies
    • 2.1. Query Routing
    • 2.2. Query Rewriting
    • 2.3. Query Caching
    • 2.4. Traffic Control
      • 2.4.1. Kill a Query
      • 2.4.2. Slow Down Traffic
  • 3. Designing Highly Available Proxy Architecture
    • 3.1. Dedicated Proxy Instances
      • 3.1.1. A Proxy with a Virtual IP Assigned
      • 3.1.2. Elastic Load Balancing
      • 3.1.3. Application-Side Proxy Discovery
    • 3.2. Collocating Proxies on Application Hosts
    • 3.3. Silo Approach
  • 4. Managing Large Proxy Deployments
  • 5. Setting up Highly Available Proxy Layers with ClusterControl
    • 5.1. ProxySQL Deployment
    • 5.2. HAProxy Deployment
  • 6. Which Proxy Should I Pick?
    • 6.1. SQL-Aware Proxy or Not?
    • 6.2. Which SQL-Aware Proxy Should Be Chosen?
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