How much to set up golang database connection pool

The setting of golang database connection pool depends on the database type, database configuration, server performance, concurrency requirements, etc. Detailed description: 1. Database type. Different database types may have different concurrent connection limits. The size of the connection pool needs to be determined according to the database type used; 2. Database configuration. Some databases allow concurrency to be adjusted through configuration files or parameters. Number of connections; 3. Server performance, the server's CPU, memory and network performance also have an impact on the settings of the database connection pool; 4. Concurrency requirements will also affect the settings of the connection pool, etc.

# Operating system for this tutorial: Windows 10 system, Dell G3 computer.

In the Go language, the number of database connection pool settings depends on multiple factors, including database type, database configuration, server performance, concurrency requirements, etc. Here are some common considerations:

1. Database type:Different database types may have different concurrent connection limits. For example, the number of concurrent connections for MySQL is usually under 1,000, while the number of concurrent connections for PostgreSQL can be higher. Therefore, the size of the connection pool needs to be determined based on the type of database used.

2. Database configuration: Some databases allow the number of concurrent connections to be adjusted through configuration files or parameters. You can check the documentation for the database you are using to learn about its limits on the number of concurrent connections and make adjustments as needed.

3. Server performance: The server's CPU, memory and network performance also have an impact on the settings of the database connection pool. If the server performance is low, you can reduce the size of the connection pool to avoid excessive resource consumption.

4. Concurrency requirements: The concurrency requirements of the application will also affect the connection pool settings. If your application needs to handle a large number of concurrent requests, you may need to increase the size of the connection pool to provide enough database connections.

When determining the size of the connection pool, it is recommended to perform performance testing and tuning. You can find the appropriate connection pool size by simulating different concurrent request scenarios and observing the system's response time and resource consumption.

It should be noted that setting an excessively large connection pool may lead to resource waste and performance degradation. Therefore, it needs to be weighed and adjusted according to the actual situation. At the same time, connections that have not been used for a long time should be released in time to avoid wasting resources.

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