@absolutejs/slo

Storage-neutral service-level objective decisions for AbsoluteJS.

Error budgets and release gates

The package converts already-authorized measurements into deterministic error budgets, burn-rate alerts, release gates, and incident transitions. It does not own storage, scraping, paging providers, or application policy.

Quick start

import { evaluateSlo, sloReleaseGate } from '@absolutejs/slo';

const evaluation = evaluateSlo(
	{
		id: 'checkout-availability',
		objective: 0.999,
		windowMs: 30 * 86_400_000,
		minimumSamples: 1_000
	},
	{ good: 99_950, total: 100_000, start, end }
);

const gate = sloReleaseGate(evaluation);

Burn rates and incidents

Use evaluateBurnRates for sustained multi-window alerting and sloIncidentDecision to prepare idempotent open/resolve transitions for @absolutejs/incidents.