Error budget by SLO
allowed downtime per period, how much budget is already spent, and the erroring-requests limit
Parameters
Downtime budget
per day1.4 min
per week10.1 min
per month (30d)43.2 min
per quarter (90d)2.2 h
per year (365d)8.8 h
Monthly budget spent150%
1.1 h of 43.2 min
Erroring requests/mo1 296,00k
Error budget = 100% − SLO: the "allowed" amount of failure you can spend on releases and experiments. While budget remains — ship; once exhausted — freeze features, stabilize only (the Google SRE rule). Each extra nine divides the budget by 10.
Sobre Error Budget
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