Nest js, TypeOrm Connection close issue

I’m using NestJs, and Typeorm (MySQL driver). From time to time I get the ‘Connection lost: The server closed the connection.’ error.
The server that I’m using closes the connection after 10-15 seconds of inactivity.
I tried different pool configurations but that didn’t help.

Here is my TypeOrm config:

TypeOrmModule.forRootAsync({
  useFactory: async () => {
    return {
      type: 'mysql',
      charset: 'utf8mb4',
      extra: {
        pool: {
          createTimeoutMillis: 30000,
          destroyTimeoutMillis: 5000,
          reapIntervalMillis: 1000,
          createRetryIntervalMillis: 200,
          acquireTimeoutMillis: 30000,
          idleTimeoutMillis: 10000,
        },
      },
      logging: ['error', 'warn'],
    };
  },
}),

I also tried using a factory. The idea was to validate the connection before a query. But it also didn’t help

factory: {
  validate: async (connection) => {
    return new Promise((resolve, reject) => {
      connection
        .raw('SELECT 1 + 1 AS health_check')
        .then(() => {
          // Connection is healthy, resolve the promise
          resolve(true);
        })
        .catch((error) => {
          // Connection is invalid, reject the promise
          reject(error);
        });
    });
  },
},