io.projectreactor:reactor-core
3.8.7
#739 most downloaded on Maven Central
reactor/reactor-core
What this package is like to depend on
Last release 3 days ago
21 Aug 2026
Ships fairly regularly
a new release about every 4 weeks
Rarely documented
notes for 10 of 189 stable releases
Nothing withdrawn
no release was ever pulled
12 years old
203 releases · first in 2015
20 releases in the last 12 months
see the full history below
Release timeline
203 releases · Feb 2015 to Aug 2026Releases
latest 60 of 203-
3.8.721 Aug 2026Release notes
Open source →Reactor Core3.8.7is part of the2025.0.7and2026.0.0-M1Release Trains.What's Changed
🐞 Bug fixes
- Fix elapsed time computation in
OptimisticEmitFailureHandlerby @bjmi in #4112 - Fix
windowTimeoutfair-backpressure index wraparound by @chemicL in 9fdb2cf - Guard against flush-state update in
FluxBufferTimeoutby @Sage-Pierce in 1791421
New Contributors
Full Changelog: v3.8.6...v3.8.7
- Fix elapsed time computation in
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3.8.608 Jun 2026Release notes
Open source →Reactor Core3.8.6is part of the2025.0.6Release Train.What's Changed
✨ New features and improvements
- Bump
ByteBuddyfrom1.18.8to1.18.10by @dependabot[bot] in #4260 - Bump
BlockHoundfrom1.0.16.RELEASEto1.0.17.RELEASEby @violetagg in edccbec - Depend on
Micrometerv1.16.6by @violetagg in edccbec - Depend on
Micrometer Tracingv1.6.6by @violetagg in edccbec
📖 Documentation
- Preserve nullability annotations in Javadoc by @chemicL in #4242
- Swap javadoc.io for jspecify.dev for JSpecify links by @chemicL in #4251
- Modernize
Antorasetup by @chemicL in #4262 - Fix an outdated link in the Mono class javadoc by @RenanMarques in #4206
New Contributors
- @RenanMarques made their first contribution in #4206
Full Changelog: v3.8.5...v3.8.6
- Bump
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3.8.514 Apr 2026Release notes
Open source →Reactor Core3.8.5is part of the2025.0.5Release Train.What's Changed
✨ New features and improvements
- Bump
ByteBuddyfrom1.18.7to1.18.8by @dependabot[bot] in #4232 - Depend on
Micrometerv1.16.5by @violetagg in #4238 - Depend on
Micrometer Tracingv1.6.5by @violetagg in #4238
Full Changelog: v3.8.4...v3.8.5
- Bump
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3.8.410 Mar 2026Release notes
Open source →Reactor Core3.8.4is part of the2025.0.4Release Train.What's Changed
✨ New features and improvements
- Bump byteBuddy from 1.18.4 to 1.18.7 by @dependabot[bot] in #4214
- Bump Micrometer from 1.16.3 to 1.16.4 by @chemicL in #4220
📖 Documentation
Full Changelog: v3.8.3...v3.8.4
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3.8.310 Feb 2026Release notes
Open source →Reactor Core3.8.3is part of the2025.0.3Release Train.What's Changed
✨ New features and improvements
- Update
NullAwayto0.13.0andErrorProneto2.46.0by @chemicL in #4187 - Bump
ByteBuddyfrom1.18.3to1.18.4by @dependabot[bot] in #4183 - Bump
Micrometerto1.16.3andMicrometer Tracingto1.6.3by @chemicL in #4202
Full Changelog: v3.8.2...v3.8.3
- Update
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3.8.213 Jan 2026Release notes
Open source →Reactor Core3.8.2is part of the2025.0.2Release Train.What's Changed
✨ New features and improvements
- Bump
ByteBuddyfrom1.18.2to1.18.3by @dependabot[bot] in #4169 - Bump
BlockHoundfrom1.0.15.RELEASEto1.0.16.RELEASEby @chemicL in #4181 - Bump
Micrometerfrom1.16.1to1.16.2by @chemicL in #4182
Full Changelog: v3.8.1...v3.8.2
- Bump
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3.8.109 Dec 2025Nothing published for this version
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3.8.007 Nov 2025Nothing published for this version
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3.8.0-RC114 Oct 2025 pre-releaseNothing published for this version
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3.8.0-M709 Sep 2025 pre-releaseNothing published for this version
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3.8.0-M612 Aug 2025 pre-releaseNothing published for this version
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3.8.0-M515 Jul 2025 pre-releaseNothing published for this version
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3.8.0-M410 Jun 2025 pre-releaseNothing published for this version
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3.8.0-M313 May 2025 pre-releaseNothing published for this version
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3.8.0-M215 Apr 2025 pre-releaseNothing published for this version
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3.8.0-M111 Mar 2025 pre-releaseNothing published for this version
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3.7.1908 Jun 2026Release notes
Open source →Reactor Core3.7.19is part of the2024.0.18Release Train.
This is the last release of3.7.x, as2024.0.xRelease Train is going out of OSS support. For the next steps, check our support policy.What's Changed
✨ New features and improvements
- Bump
ByteBuddyfrom1.18.8to1.18.10by @dependabot[bot] in #4260 - Bump
BlockHoundfrom1.0.16.RELEASEto1.0.17.RELEASEby @violetagg in c84e170
📖 Documentation
Full Changelog: v3.7.18...v3.7.19
- Bump
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3.7.1814 Apr 2026Release notes
Open source →Reactor Core3.7.18is part of the2024.0.17Release Train.What's Changed
✨ New features and improvements
- Bump
ByteBuddyfrom1.18.7to1.18.8by @dependabot[bot] in #4232
Full Changelog: v3.7.17...v3.7.18
- Bump
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3.7.1710 Mar 2026Release notes
Open source →Reactor Core3.7.17is part of the2024.0.16Release Train.What's Changed
✨ New features and improvements
- Bump byteBuddy from 1.18.4 to 1.18.7 by @dependabot[bot] in #4214
📖 Documentation
Full Changelog: v3.7.16...v3.7.17
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3.7.1610 Feb 2026Release notes
Open source →Reactor Core3.7.16is part of the2024.0.15Release Train.What's Changed
✨ New features and improvements
- Bump
ByteBuddyfrom1.18.3to1.18.4by @dependabot[bot] in #4183
Full Changelog: v3.7.15...v3.7.16
- Bump
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3.7.1513 Jan 2026Nothing published for this version
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3.7.1409 Dec 2025Nothing published for this version
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3.7.1307 Nov 2025Nothing published for this version
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3.7.1214 Oct 2025Nothing published for this version
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3.7.1109 Sep 2025Nothing published for this version
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3.7.1009 Sep 2025Nothing published for this version
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3.7.912 Aug 2025Nothing published for this version
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3.7.815 Jul 2025Nothing published for this version
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3.7.710 Jun 2025Nothing published for this version
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3.7.613 May 2025Nothing published for this version
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3.7.515 Apr 2025Nothing published for this version
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3.7.411 Mar 2025Nothing published for this version
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3.7.311 Feb 2025Nothing published for this version
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3.7.214 Jan 2025Nothing published for this version
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3.7.110 Dec 2024Nothing published for this version
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3.7.012 Nov 2024Nothing published for this version
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3.6.1810 Jun 2025Nothing published for this version
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3.6.1713 May 2025Nothing published for this version
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3.6.1615 Apr 2025Nothing published for this version
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3.6.1511 Mar 2025Nothing published for this version
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3.6.1411 Feb 2025Nothing published for this version
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3.6.1310 Dec 2024Nothing published for this version
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3.6.1212 Nov 2024Nothing published for this version
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3.6.1115 Oct 2024Nothing published for this version
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3.6.1010 Sep 2024Nothing published for this version
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3.6.913 Aug 2024Nothing published for this version
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3.6.809 Jul 2024Nothing published for this version
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3.6.711 Jun 2024Nothing published for this version
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3.6.614 May 2024Nothing published for this version
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3.6.509 Apr 2024Nothing published for this version
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3.6.412 Mar 2024Nothing published for this version
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3.6.313 Feb 2024Nothing published for this version
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3.6.209 Jan 2024Nothing published for this version
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3.6.112 Dec 2023Nothing published for this version
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3.6.014 Nov 2023Nothing published for this version
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3.5.2013 Aug 2024Nothing published for this version
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3.5.1909 Jul 2024Nothing published for this version
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3.5.1811 Jun 2024Nothing published for this version
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3.5.1714 May 2024Nothing published for this version
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3.5.1609 Apr 2024Nothing published for this version