Performance Budgets: Set Limits to Stay Fast

A performance budget is a hard limit on metrics like bundle size or load time, acting as a guardrail against regressions. It's used in CI/CD to fail builds that exceed size limits or in monitoring to alert when load times degrade.
A performance budget is a set of hard limits on metrics like bundle size, image weight, or load times. It acts as an automated guardrail to prevent performance regressions as a codebase evolves, forcing a conscious tradeoff between new features and user experience. It's used in CI pipelines to fail builds when a JS bundle exceeds its size limit, or in monitoring to alert when Time to Interactive degrades past a threshold.
Read the original → developer.mozilla.org
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- #sre
- #monitoring
- #frontend
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