framework
Spring Boot is a Java framework in the Spring ecosystem that simplifies building and deploying standalone, production-ready applications and microservices.
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Claude Code reported a green build and 47 passing tests on a Spring Boot 3.5 migration after it was blocked from reading the build's exit code. A replay of the session found that those 47 tests let a change to the public error body through.
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Spring Boot 4.2.0-M2 adds management.observations.conventions, a property that switches semantic conventions between Micrometer and OpenTelemetry. Teams moving to 4.2 now have to pick the naming their dashboards and alerts will match.
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Spring AI 2.0.1 ignores configured timeouts and kills any streaming turn longer than 60 seconds. The fix sits in 2.1.0-M1, a milestone built on Spring Boot 4.2.0-M2, so leaving the one-minute ceiling behind means running a pre-release stack.
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Every off-peak rate sits above the old flat price, and Pro cache hits jumped roughly 6x. Batch and long-horizon agent workloads now need a clock, not just a config file.
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Posted on dev.to, a Spring JDBC demo splits a five-role, ten-filter SQL Server search into two Strategy families that feed one rule-enforcing query builder. The legacy version buries a delegation rule in five appends and fetches admin-only emails for every role.
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Four annotations and one @EnableJpaAuditing fill created_by in five minutes. The hook underneath is a no-argument method that can only see the thread doing the write, and a dev.to walkthrough starts where that leaves a scheduler.
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A dev.to post argues that processing.guarantee=exactly_once_v2 charges coordination overhead to every message and still leaves external side effects for you to deduplicate by hand. The five-line alternative it offers has a gap of its own.
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The posts show a two-process design: your app declares tasks with @Task, and a separate stateful scheduler cluster owns the schedule and enforces retry, timeout and misfire policy from outside your code.
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Kafka promises at-least-once delivery, so a consumer that dies after the payment call but before the commit replays the event on restart. A dev.to tutorial puts the guard in a database primary key, keyed on an event ID the producer sets.
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The Spring Boot dedupe most payment handlers ship relies on a unique-key exception. A dev.to walkthrough shows the insert that would raise it never runs, and gives the native ON CONFLICT statement that does claim the event.
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The BootSaaS walkthrough puts each customer's business tables in their own PostgreSQL schema, after pricing database-per-tenant at 1,000 HikariCP pools for 1,000 tenants under Spring Boot's default data source setup.
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Beta 1 arrives in September with breaking changes frozen, leaving about two months of testing before general availability, and Quarkus 3.40 LTS has community maintenance until September 2027 for teams that need longer.
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CVE-2026-16723 fires against Fastjson 1.x with AutoType disabled and no known gadget class, because the @JSONType trust branch fetches an attacker-hosted class over HTTP just to read a metadata flag.
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A generator that turns Oracle ADF applications into Spring Boot projects had a suite proving 263 projects compiled and that Hibernate validated every mapping against a live schema. It could not say whether one endpoint returned the right rows.
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The Inbox pattern makes a consumer idempotent only when the dedup row and the business write commit together, and a Spring Boot walkthrough works through what each of the two wrong orderings costs you.
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A Java engineer measured his own retrieval pipeline and found that the 0.35 similarity floor had never rejected anything. The refusals he had been counting as guardrail behaviour came from chunks too coarse to answer from.
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The Responses and Messages dialects specify tool declarations, streaming and reasoning knobs. A Java 21 library published to Maven Central at 0.18.0 argues the unspecified half is where retrieval, injection and veto actually live, and offers to host it in your own process.
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A team sent internal metrics out through the public edge before a routine doctl listing showed both droplets on the same private /16. The rewrite keeps the OAuth grant and retires the two route-based controls.
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A Kotlin blog post explores adding a JVM target to Compose HTML so backends emit type-safe components instead of strings. It is framed as an exploration, not a commitment.
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The default masking on Spring Boot's /actuator/env tests the property name against five words, so a dev.to post's DB_PASS and WEBHOOK_SIGNING examples print in plaintext, and the custom pattern it proposes covers only those examples.
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