What is Observability?
Knowing what's happening inside your app when it's running.
In plain English
Observability is a fancy word for a simple idea: when your app is running in production, can you see what it's doing? If a user hits an error, can you find out why? If your bill spikes, can you see what caused it? If your app is slow, can you see which part is slow? An 'observable' app lets you answer these questions. An 'unobservable' app leaves you guessing. Most vibe-coded apps are unobservable by default — the AI generated code that works, but didn't add any logging or monitoring. FlareLog makes your app observable in 5 minutes.
Why it matters
Without observability, you're debugging by guessing. A user emails 'your app is broken' and you have no idea what they mean. You refresh the page, it works for you, you reply 'works on my machine'. With observability, you see the exact error, the exact request, and the exact line of code that caused it — without asking the user anything.
How FlareLog handles it
FlareLog gives you observability without the DevOps overhead. The SDK auto-captures console.log, uncaught errors, and unhandled rejections. The Tail Worker captures crashes your SDK can't see. The MCP server lets your AI read it all. No dashboards to build, no YAML to write, no SRE to hire.
FAQ
Is observability the same as monitoring?
Close but not exactly. Monitoring is watching specific metrics (CPU, memory, error rate). Observability is broader — it means you can answer any question about your app's behavior, even questions you didn't think to ask in advance. FlareLog gives you both: real-time monitoring (cost alerts, error rates) and observability (full logs, traces, and search).
Do I need observability if my app is small?
Yes — especially if it's small. A small app with no observability is a black box. When it breaks (and it will), you'll spend hours guessing. FlareLog's free tier (10k logs/month) is enough for most small apps. You'll thank yourself the first time something breaks at 2 AM.