Long Thanh Imbiss API versioning and deprecation policy

Current supported version

Version 1 is supported at /api/v1/. No endpoint is currently deprecated, and no sunset date is scheduled. The compatibility text feed /speisekarte.txt remains available. OpenAPI info.version describes compatible releases of the contract independently of the URL major version.

Compatible changes

Within v1, existing field meanings and types remain stable. Clients should tolerate additional response fields. Breaking changes require a new URL major version, such as /api/v2/.

Notice before removal

Before withdrawing a supported version, Long Thanh Imbiss will give at least 90 days notice on this page, identify replacement endpoints, and provide migration instructions. Affected responses will include a Deprecation header using an RFC 9745 structured date, a Sunset header using an RFC 8594 HTTP date, and a Link header with rel="deprecation" pointing to the migration guidance.

Current responses link to this policy using rel="deprecation". They omit Deprecation and Sunset dates because there is no active deprecation. Policy links do not themselves mark an endpoint as deprecated.

See RFC 9745, RFC 8594, the OpenAPI contract, API documentation and Long Thanh Imbiss developer portal.