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Error budget

The share of requests an SLO allows to fail, such as 0.1% for 99.9%.

Taught in Chapter 25: Observability.

More from the same chapter

• Burn rate: How fast the error budget is being spent: 1 uses it exactly over the period, 10 empties it ten times sooner.
• Golden signals: Latency, traffic, errors and saturation: four numbers to start with for any service.
• Saturation: How full a component is, such as its queue depth, busy threads or connections in use. It moves before errors do.