# Fastify v5.10.0

- Product: Fastify (https://whatsnew.fyi/product/fastify)
- Vendor: Fastify
- Date: 2026-07-05
- Version: v5.10.0
- Original notes: https://github.com/fastify/fastify/releases/tag/v5.10.0
- Permalink: https://whatsnew.fyi/product/fastify/releases/v5.10.0

What's New is an index, not a publisher: every entry below links to the vendor's own release notes, which are the authoritative source. Entries are labelled where they are hand-curated sample data, pre-releases, or drawn from a secondary source such as a developer blog.

Reuse: the summaries, labels and curation here are © What's New. Quote freely with attribution and a link back; wholesale republication of the corpus is not permitted — terms: https://whatsnew.fyi/terms. The vendors' own release notes remain their publishers'.

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- **added** — Introduce log controller layer
- **fixed** — Clear socket._meta on reply.hijack() when onTimeout is registered
- **fixed** — Use ContentType to detect json and charset in reply.send
- **fixed** — Derive request.port from request.host
- **changed** — Reduce per-request overhead in the request lifecycle

##### What's Changed
* docs(type-providers): clarify as const usage by @smith558 in https://github.com/fastify/fastify/pull/6772
* docs: fix broken and redirected links by @Eomm in https://github.com/fastify/fastify/pull/6817
* docs: remove marko from @fastify/view engines (support dropped) by @EduardF1 in https://github.com/fastify/fastify/pull/6821
* fix: clear socket._meta on reply.hijack() when onTimeout is registered by @nerkoux in https://github.com/fastify/fastify/pull/6810
* docs: fix duplicate routeOptions entries in Request.md example by @thePranav-kpk in https://github.com/fastify/fastify/pull/6824
* chore: Bump @types/node from 25.9.4 to 26.0.1 in the dev-dependencies-typescript group by @dependabot[bot] in https://github.com/fastify/fastify/pull/6829
* docs(ecosystem): add @stitchapi/fastify to Community plugins by @rejifald in https://github.com/fastify/fastify/pull/6820
* feat: introduce log controller layer by @Eomm in https://github.com/fastify/fastify/pull/6580
* fix: use ContentType to detect `json` and `charset` in reply.send by @climba03003 in https://github.com/fastify/fastify/pull/6830
* docs: fix incorrect defaults and code examples in Server.md by @Adit-Jain-srm in https://github.com/fastify/fastify/pull/6805
* docs: fix incorrect hook count in Hooks.md by @thePranav-kpk in https://github.com/fastify/fastify/pull/6825
* chore: Bump fast-json-stringify from 6.4.0 to 7.0.0 in the dependencies group across 1 directory by @dependabot[bot] in https://github.com/fastify/fastify/pull/6800
* perf: reduce per-request overhead in the request lifecycle by @mcollina in https://github.com/fastify/fastify/pull/6831
* fix: derive request.port from request.host by @mcollina in https://github.com/fastify/fastify/pull/6680
* docs: update Logging.md with per-route log level info by @asppsa in https://github.com/fastify/fastify/pull/6627
* docs(type-providers): update import for article consistency by @smith558 in https://github.com/fastify/fastify/pull/6771

##### New Contributors
* @EduardF1 made their first contribution in https://github.com/fastify/fastify/pull/6821
* @thePranav-kpk made their first contribution in https://github.com/fastify/fastify/pull/6824
* @rejifald made their first contribution in https://github.com/fastify/fastify/pull/6820
* @Adit-Jain-srm made their first contribution in https://github.com/fastify/fastify/pull/6805
* @asppsa made their first contribution in https://github.com/fastify/fastify/pull/6627

**Full Changelog**: https://github.com/fastify/fastify/compare/v5.9.0...v5.10.0