Set connection pool and overflow limits when using Node.js

Configure the connection pool size and overflow when connecting to Cloud SQL for PostgreSQL by using the Node.js knex module.

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For detailed documentation that includes this code sample, see the following:

• Manage database connections

Code sample

Node.js

To authenticate to Cloud SQL for PostgreSQL, set up Application Default Credentials. For more information, see Set up authentication for a local development environment.

// 'max' limits the total number of concurrent connections this pool will keep. Ideal
// values for this setting are highly variable on app design, infrastructure, and database.
config.pool.max = 5;
// 'min' is the minimum number of idle connections Knex maintains in the pool.
// Additional connections will be established to meet this value unless the pool is full.
config.pool.min = 5;

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