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wire 2026-08-30
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$ the-wire · showcase

Spring improves singleton destruction caching, upgrades Elasticsearch and Boot deps

By RepoJournal · Filed · About Spring

Juergen Hoeller dependabot Artem Bilan Stefano Cordio sothawo
5 people shipped this
Juergen Hoeller @jhoeller 2 cited dependabot @dependabot 2 cited Artem Bilan @artembilan 1 cited Stefano Cordio @scordio 1 cited sothawo @sothawo 1 cited

Spring Framework improves singleton destruction handling while Spring Data Elasticsearch moves to 9.5.2 and Spring Kafka bumps Boot to 4.0.8.

Spring Framework switched to the singleton target as the cache key for destruction purposes [1], closing gh-37207. This means destruction caching now keys on the actual target bean, preventing mismatches when proxies or aliases are involved. Separately, a lock-guarded boolean field was reduced to a thread-local [2], closing gh-37199 and eliminating lock contention on that hot path. Spring Data Elasticsearch upgraded to Elasticsearch 9.5.2 [3], closing #3333, bringing the client in line with the latest server release. In the same vein, Spring Batch Extensions bumped spring-boot-starter-parent from 4.0.3 to 4.1.1 [4], and Spring Kafka updated its development dependencies, moving spring-boot-starter from 4.0.7 to 4.0.8 [5]. The Kafka build also tracks Spring Data's BOM from 2026.1.0-M1 to 2026.1.0-SNAPSHOT [6], keeping alignment with upcoming milestones. Finally, a flaky Spring Integration test was fixed [7]: the mocked MessageSource now properly terminates its polling sequence, so the test no longer fails on loaded CI runners.

Action items

References

  1. [1] Use singleton target as cache key for destruction purposes ↗ spring-projects/spring-framework
  2. [2] Reduce lock-guarded boolean field to thread-local ↗ spring-projects/spring-framework
  3. [3] Upgrade to Elasticsearch 9.5.2. ↗ spring-projects/spring-data-elasticsearch
  4. [4] Bump `spring-boot-starter-parent` from 4.0.3 to 4.1.1 ↗ spring-projects/spring-batch-extensions
  5. [5] Bump org.springframework.boot:spring-boot-starter from 4.0.7 to 4.0.8 in the development-dependencies group ↗ spring-projects/spring-kafka
  6. [6] Bump org.springframework.data:spring-data-bom from 2026.1.0-M1 to 2026.1.0-SNAPSHOT ↗ spring-projects/spring-kafka
  7. [7] Fix flaky MockMessageSourceTests.testMockMessageSource() ↗ spring-projects/spring-integration

$ ls spring-projects/reviews/ # the step-back reads

the week in review Spring WS, Security fixes; Boot reactive backoff the month in review Spring standardizes release trains while security patches and batch fixes surface
Topics: Java Full archive →

Quick answers

What shipped in Spring on August 30, 2026?
Spring Framework improves singleton destruction handling while Spring Data Elasticsearch moves to 9.5.2 and Spring Kafka bumps Boot to 4.0.8. In total, 8 commits and 3 pull requests landed.
Who contributed to Spring on August 30, 2026?
5 developers shipped this update, including Artem Bilan, Juergen Hoeller, Stefano Cordio, sothawo, and dependabot.
What were the notable Spring updates?
Use singleton target as cache key for destruction purposes, Reduce lock-guarded boolean field to thread-local, and Upgrade to Elasticsearch 9.5.2.
♥

$ log @spring-projects --recent

Spring Kafka fixes multi-value header loss with JSON types 3 shipped Spring Framework fixes duplicate key code lookup 10 shipped Spring Boot reactive resource server backs off with custom security 56 shipped AMQP channel exhaustion and frame_max fixes, security race condition closed 53 shipped

$ log --all # elsewhere on the wire

Meta React Native adds Stable API guards to renderer attributed string FastAPI & Pydantic Pydantic fixes Mypy plugin crash, tightens datetime constraints

$ ls showcases/

Rails Django Laravel Node.js Go Vercel Vue.js Kubernetes HashiCorp Arch Linux Linux Anthropic

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