Shulou(Shulou.com)05/31 Report--

This article will explain in detail how to solve the replication lag in MySQL. The content of the article is of high quality, so the editor will share it for you as a reference. I hope you will have a certain understanding of the relevant knowledge after reading this article.

Slave node disk problem: the replication operation is done by a thread for each database, and the delay in executing changes is usually caused by disk latency. In this case, you should consider using SSD to speed up the process.

Low bandwidth / high network latency: if there is a problem of low bandwidth between two servers located at a remote location (in the case of high latency) or between servers, we should use one of the following methods or a combination of both to reduce traffic between servers to a limited extent.

Use statement-based replication: row-based replication creates a SQL statement for each row change in the database. Statement-based replication is a record of the actual SQL statement sent by the application. Statement-based replication is usually more effective in terms of record size. However, you should be aware that when you use UPDATE. Statement-based replication may not be very effective in LIMIT1

Compressed traffic: MySQL supports log compression replication using the slave_compressed_protocol parameter. This approach will reduce communication between servers by up to 80%. However, compression is computationally intensive, so you should be aware that this will result in some additional CPU utilization (which is not usually a problem in the database). This parameter should be enabled on both servers:

Enter dynamically from the MySQL command line: SET GLOBALslave_compressed_protocol = 1

Configure in the MySQL configuration file:

# compress master-slave communication slave_compressed_protocol = 1 so much about how to solve the replication lag in MySQL. I hope the above content can be helpful to you and learn more. If you think the article is good, you can share it for more people to see.

Welcome to subscribe "Shulou Technology Information " to get latest news, interesting things and hot topics in the IT industry, and controls the hottest and latest Internet news, technology news and IT industry trends.