ProxySQL for Load Balancing

Importance of ProxySQL for Load Balancing

  • ProxySQL can enhance the Load Balancing process among your MySQL Databases due to the following reasons:
  • By leveraging Connection Multiplexing, you can drastically reduce connection usage. Moreover, you can implement Load Balancing by serving multiple frontend connections dynamically via a single backend connection.
  • It allows you to generate complex Query Rules. These rules enhance your database query processing by providing you with, distributed reads across replicas. It also offers to rewrite queries with highly granular criteria on the fly and provides high ProxySQL performance.
  • Since it has a small footprint, you can easily deploy it in any form. For instance, you can use it in a decentralized way for your application servers or in a centralized layer within the servers
  • It’s zero vendors allow you to lock in your applications while retaining full MySQL compliance. This way it ensures a clean and simple integration into your environment for Load Balancing.

Concepts & Architecture of ProxySQL

The ProxySQL Architecture consists of the following major components:

  • Query Rules Engine: It integrates well with MySQL and operates according to its protocol. The Query Rules Engine monitors the incoming traffic and dynamically decides whether to cache a query, block, re-write, reroute or mirror it onto a target of host group.
  • User Authentication: The required user credentials for the supporting databases are hashed and safely stored in the proxy.
  • Hostgroup Manager: Its role is to manage the server groups, track their state and regulate the outgoing traffic.
  • Connection Pool: This ensures the connections to the backend databases are working. This pool is established with the backends, and the connections are shared by all applications.

 

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