replit-observability

name	replit-observability
description	Monitor Replit deployments with health checks, uptime tracking, resource usage, and alerting. Use when setting up monitoring for Replit apps, building health dashboards, or configuring alerting for deployment health and performance. Trigger with phrases like "replit monitoring", "replit metrics", "replit observability", "monitor replit", "replit alerts", "replit uptime".
allowed-tools	Read, Write, Edit
version	1.12.0
license	MIT
author	Jeremy Longshore <[e-mail]>
tags	["saas","replit","monitoring","observability","alerting"]
compatibility	Designed for Claude Code

Replit Observability

Overview

Monitor Replit deployment health, track cold starts, measure resource usage, and set up alerting. Covers Replit's built-in monitoring, external health checking, structured logging, and integration with monitoring services.

Prerequisites

• Replit app deployed (Autoscale or Reserved VM)
• Health endpoint implemented (/health)
• External monitoring service (UptimeRobot, Better Stack, or Prometheus)

Instructions

Step 1: Health Endpoint with Detailed Metrics

// src/routes/health.ts — comprehensive health check
import { Router } from 'express';
import { pool } from '../services/postgres';

const router = Router();
const startTime = Date.now();

router.get('/health', async (req, res) => {
  const checks: Record<string, any> = {
    status: 'ok',
    uptime: process.uptime(),
    bootTime: ((Date.now() - startTime) / 1000).toFixed(1) + 's ago',
    timestamp: new Date().toISOString(),
    repl: process.env.REPL_SLUG,
    region: process..,
    : process..,
  };

  
   (process..) {
     dbStart = .();
     {
       pool.();
      checks. = {
        : ,
        : .() - dbStart,
        : { : pool., : pool. },
      };
    }  (: ) {
      checks. = { : , : err. };
      checks. = ;
    }
  }

  
   mem = process.();
  checks. = {
    : .(mem. /  / ),
    : .(mem. /  / ),
    : .(mem. /  / ),
    : ((mem. / mem.) * ).(),
  };

  
  checks. = {
    : process.,
    : process.,
    : process.,
  };

  res.(checks. ===  ?  : ).(checks);
});


router.(,  res.());

  router;