You don't need Datadog's $50K/year plan to have solid observability. Here's how to build a monitoring stack on a startup budget.
The Open-Source Stack
Grafana + Prometheus for metrics, Loki for logs, and Sentry for error tracking. Total cost: under $50/month.
What to Monitor
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Start with the golden signals: latency, traffic, errors, and saturation. Everything else is noise until you hit scale.
Conclusion
Great observability is about asking the right questions, not collecting the most data. Start lean and add instrumentation as needed.
MR
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