best practices for intermittent 502 Bad Gateway errors from Azure App Service with Node.js Express app?
I'm following best practices but I just started working with I've looked through the documentation and I'm still confused about Hey everyone, I'm running into an issue that's driving me crazy. I'm experiencing intermittent 502 Bad Gateway errors when accessing my Node.js Express application hosted on Azure App Service. This scenario seems to occur under load, and I want to pinpoint the exact cause. My application is using the latest version of Node.js (18.x) and Express (4.17.3), and I've implemented logging to track the requests and responses. Here's a snippet of my server setup: ```javascript const express = require('express'); const app = express(); const PORT = process.env.PORT || 3000; app.use(express.json()); app.get('/', (req, res) => { res.send('Hello World!'); }); app.listen(PORT, () => { console.log(`Server is running on port ${PORT}`); }); ``` I've enabled Application Insights to monitor performance and detect issues. Sometimes I see spikes in response time before the 502 errors occur, but the logs don't provide enough detail to identify the root cause. I also tried scaling up the App Service plan to Premium, but the scenario continues. Additionally, my application connects to an Azure SQL Database, and I suspect that slow database queries could be contributing to the question. I've tried optimizing my queries, but it's hard to determine if they are the bottleneck without detailed performance metrics. Has anyone experienced similar issues? What steps can I take to diagnose and resolve these 502 errors effectively? Any insights on best practices for configuring Azure App Services with Node.js and handling database connections would also be greatly appreciated. I'm working on a web app that needs to handle this. What am I doing wrong? For context: I'm using Javascript on Debian. I'd really appreciate any guidance on this. I've been using Javascript for about a year now. Any ideas how to fix this?