Distributed
← Operational readiness

Lesson 10.1

SLOs & error budgets

A service-level objective sets a measurable reliability target for a user journey, while its error budget is the limited amount of failure that target permits during a rolling window.

A sharp checkout failure burns a monthly promise

Ava and Ben run the cookie shop computer. It promises that almost every checkout works, so a burst of failed orders must use only a small saved allowance.

In this lesson you'll

  1. 1Follow one run and learn how to read the picture
  2. 2Predict what changes before revealing the result
  3. 3Compare the practices and help Ava get checkout restored while budget remains