Method setupKeepAlive

packages/query/src/graphql/graphql.module.ts:119–131

(pgClient: PoolClient)

  }

  private setupKeepAlive(pgClient: PoolClient) {
    const interval = argv['sl-keep-alive-interval'] || 180000;
    logger.info(`Setup PG Pool keep alive. interval ${interval} ms`);
    setInterval(() => {
      void (async () => {
        try {
          await pgClient.query('SELECT 1');
        } catch (err) {
          getLogger('db').error('Schema listener client keep-alive query failed: ', err);
        }
      })();
    }, interval);
  }

  private async createServer() {
    const app = this.httpAdapterHost.httpAdapter.getInstance();