HTTP Status Code - CI/CD Glossary Definition
An HTTP status code is a three-digit number a server returns to summarize the result: 2xx success, 3xx redirect, 4xx client error (404 not found, 429 too many requests), 5xx server error (500, 503).
In CI
A flaky integration test often reduces to a transient 502 or 503 from a dependency. Treating 5xx and 429 as retryable, but 4xx (except 429) as a real bug, is the basis of a sane retry policy.
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