How do I measure remaining failed requests against the reliability target for one observation window?
A failure budget is floored to whole requests. Each failure belongs to the same request cohort.
Open Failure Budget DeskTry the worked example
These are the example inputs from Failure Budget Desk. Replace them in the tool to run your own case.
| Service | Requests | Failures | Success target % |
|---|---|---|---|
| Portal | 10000 | 14 | 99.9 |
| API | 2000 | 1 | 99.5 |
Example result
1 budget exceeded
Who uses this?
Service reliability owner. The free online tool runs the calculation in your browser. To edit the files and use the tools offline in one business, see the €49 offline edition.
Where the idea came from
Measure remaining failed requests against the reliability target for one observation window. The demonstrated change reaches a pull request and a human approval point before merge. Benchcraft designed this tool’s inputs, decision rule and example for this office task.
Original video