#211 Demo workflow: add backend health check route#214
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Code Review
This pull request adds a new /api/health endpoint to check the application's status. The feedback suggests enhancing this health check by verifying the database connection state and returning a 503 status if the database is disconnected, rather than unconditionally returning a 200 OK status.
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| const express=require('express') | ||
| const router=express.Router() | ||
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| router.get('',(req,res)=>{ | ||
| res.status(200).json({ status: 'ok' }) | ||
| }) | ||
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| module.exports = router No newline at end of file |
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A robust health check should verify the status of critical dependencies like the database connection. Currently, the route returns 200 OK even if the database connection is lost or disconnected. Checking mongoose.connection.readyState ensures that orchestrators (like Kubernetes or AWS ECS) or load balancers can accurately detect when the service is unhealthy and take appropriate action (e.g., restarting the container or stopping traffic routing).
| const express=require('express') | |
| const router=express.Router() | |
| router.get('',(req,res)=>{ | |
| res.status(200).json({ status: 'ok' }) | |
| }) | |
| module.exports = router | |
| const express = require('express') | |
| const { default: mongoose } = require('mongoose') | |
| const router = express.Router() | |
| router.get('', (req, res) => { | |
| const dbState = mongoose.connection.readyState | |
| if (dbState !== 1) { | |
| return res.status(503).json({ | |
| status: 'error', | |
| database: 'disconnected' | |
| }) | |
| } | |
| res.status(200).json({ status: 'ok' }) | |
| }) | |
| module.exports = router |
2 participants
Closes #211
Summary
Validation