Engineering,
but with adrenaline.
A live incident simulator for data engineers. Real systems, real bills, real SLO clocks — recompiled from outage post-mortems and dropped onto your pager. One free sim every month; replays last forever.
We share a user_hash column with an analytics partner so they can join on users without seeing identities. This morning the partner sent back a spreadsheet mapping our user_hash values straight to real email addresses. We used SHA-256 - it's a one-way function. So how did they reverse it?
Not a tutorial. A diagnosis loop on a clock.
Every sim runs the same four-phase loop the best on-call engineers run in their head. Skip a phase, get graded down. Trip a red herring, lose the clock.
Hunt clues in the right component.
You're handed a topology and a brief. Open the components you think matter. Wrong probes burn time. Wrong layers burn red herrings against your grade.
- Pick component → run probe → inspect output
- Evidence chips accumulate at the bottom
- 4 clues per sim · 1 right answer per layer
The stakes aren't theoretical.
They're the bills you've actually paid.
Every scenario is recompiled from a real outage post-mortem. Same systems, same metrics, same root causes — we change the names so the lawyers stay calm.
Every Monday, a new ticket.
Last Monday of the month — free for everyone.
One free simulation every month.
Unlock the rest for the price of one bad query.
A new drop every Monday. The last drop of the month is free for everyone, no card. Annual saves ~50%. Cancel anytime, replays last forever.