Health check for Connect.

Installation:

$ npm install tagged-health

Usage:

The health check can be registered as middleware in any Connect app:

var connect = require('connect');
var health = require('tagged-health');
var app = connect();

// Default health check on `/health.json`:
app.use(health.middleware());

// Custom health check path:
app.use(health.middleware('/my/custom/health.json');

The health check responds with the following data:

{
  "status": "OK",
  "arch": "x64",
  "pid": 1234,
  "uptime": 456,
  "memory": {
    "rss": 15208448,
    "heapTotal": 7195904,
    "heapUsed": 3183048
  },
  workers: []
}

Cluster Support:

If you're using the cluster module, a master health check can be created on its own port:

var health = require('tagged-health');
health.server({
    path: '/health.json',   // path to health check (default: /health.json)
    port: 3000              // port to listen on (default: 3000)
}, function() {
    console.log("Master health check listening on port 3000 at /health.json")
});