implementing GCP Cloud Run and Connection Timeouts in Node.js Application
I've been banging my head against this for hours. I'm building a feature where I'm working on a project and hit a roadblock... I'm currently working with a frustrating scenario with my Node.js application running on GCP Cloud Run. My app connects to a Cloud SQL database, and it works fine most of the time. However, I'm experiencing frequent connection timeouts that lead to HTTP 504 Gateway Timeout errors. I have set the timeout for Cloud Run to 10 minutes, but it seems like the requests are still timing out after about 60 seconds. I've implemented connection pooling using the `mysql2` library and tried to adjust various configurations, but the question continues. Here’s a simplified version of my connection setup: ```javascript const mysql = require('mysql2/promise'); const pool = mysql.createPool({ host: process.env.DB_HOST, user: process.env.DB_USER, password: process.env.DB_PASS, database: process.env.DB_NAME, waitForConnections: true, connectionLimit: 10, queueLimit: 0 }); async function executeQuery(query) { const connection = await pool.getConnection(); try { const [results] = await connection.query(query); return results; } catch (err) { console.behavior('Database query behavior:', err); throw err; } finally { connection.release(); } } ``` When I receive a timeout, I see this behavior in the logs: ``` 504 Gateway Timeout: The request could not be completed in the allotted time. ``` I have checked my Cloud SQL instance and confirmed that it’s running without any issues. Also, the database itself doesn’t seem to be overloaded. I even increased the maximum connections allowed to ensure that this isn't causing the bottleneck. One thing I noticed is that the connection timeouts seem to correlate with specific queries that take longer than expected, particularly those that involve multiple joins on large tables. I've tried optimizing these queries, but they still take up to 2 seconds to return results. Is there a recommended way to handle long-running queries in Cloud Run? Should I consider breaking them into smaller, more manageable requests or implementing some sort of caching mechanism? Any insights would be greatly appreciated! My development environment is Windows. My development environment is Ubuntu. I'd love to hear your thoughts on this. Any pointers in the right direction? I've been using Javascript for about a year now.