System Design Lab

Core · Find out it broke before your client does.

Observability

Automations fail silently. A token expires, a field gets renamed, and leads stop flowing, and the first alert is an annoyed client. Logs, metrics and alerts turn “it broke three days ago” into “it broke three minutes ago”.

Wiring up the simulator…

Try this

Run each experiment in the simulator above, then tick it off.

Key ideas

Logs say what happened

Every run, every step, with the error message and the record ID.

Metrics say where it's heading

Success rate and latency over time catch slow decay that single log lines hide.

Alerts say it now

Alert on what clients feel, like error rate over a threshold or no leads in two hours, not on every single failure.

In your Pabbly workflows

Give every client workflow an error path: on failure, post to Slack or email with the workflow name, step, error and record ID. Add a daily heartbeat workflow that counts yesterday's leads and alerts when the number is zero or unusually low. That catches the failures that never throw an error.

Check yourself

0/2

Get every question right to mark this lab done. Wrong answers let you try again.

Q1. Which alert catches a form that silently stopped sending data?

Q2. Metrics differ from logs because they…

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