Search for a command to run...
Articles tagged with #observability
Introduction You've got structured logging with Zap. You're collecting metrics with Prometheus. You're tracing requests with OpenTelemetry. Great! But here's the problem: where do you store all this data long-term? Prometheus only keeps data for 15 d...
Introduction Picture this: A user reports that your checkout flow is slow. You check the logs. Everything looks fine. You check the metrics. P99 latency is... bad. But why? Without tracing, you're guessing. Maybe it's the payment service? The invento...
Introduction Logs tell you what happened. Metrics tell you how often it happened and how long it took. Here's the thing: logs are great for debugging specific issues, but they're terrible for answering questions like: How many requests per second ar...
Introduction Ever tried debugging a production issue using logs like this? 2025/11/30 10:30:45 Request received 2025/11/30 10:30:46 Processing order 2025/11/30 10:30:47 Error occurred Yeah... good luck figuring out which request failed, what the err...