What is Prometheus? Explained Simply
Prometheus is an open-source monitoring and alerting toolkit that was originally built at SoundCloud. Think of it as your application’s heartbeat monitor — constantly watching, collecting, and helping you understand what’s going on. 🧠 Why Prometheus? Imagine you’re running an application with hundreds of containers across multiple environments. How do you know if something’s slow or broken? Prometheus answers that by: Scraping metrics from your apps and infrastructure Storing data efficiently using a time-series database Letting you query metrics with a powerful language (PromQL) Alerting you when things go wrong 🔧 How It Works Prometheus works by pulling metrics from exporters (tiny HTTP servers that expose /metrics). For example: ...