v1.32

What's Changed

• Send vote when election starts with older timestamp than block
• Add Unbanner
• Add metric percentiles
• Add NetworkInfoContributor
• Improve connection cleanup in tests by @rotilho in #393

Full Changelog: v1.31...v1.32

v1.31

What's Changed

• Add voter metrics
• Target march=compatibility by @rotilho in #379
• Voter improvements by @rotilho in #390
• Enhance handshake validation and connection management logic by @rotilho in #391
• Add early exit for non-historical nodes in VoteKeeper.keep by @rotilho in #392
• Bump org.jetbrains.kotlinx:kotlinx-serialization-json from 1.9.0 to 1.10.0 by @dependabot[bot] in #382
• Bump org.graalvm.buildtools.native from 0.11.3 to 0.11.4 by @dependabot[bot] in #380
• Bump org.springdoc:springdoc-openapi-starter-webflux-ui from 2.8.14 to 3.0.1 by @dependabot[bot] in #377
• Bump actions/upload-artifact from 6 to 7 by @dependabot[bot] in #385
• Bump actions/download-artifact from 7 to 8 by @dependabot[bot] in #386
• Bump docker/build-push-action from 6 to 7 by @dependabot[bot] in #389
• Bump docker/setup-buildx-action from 3 to 4 by @dependabot[bot] in #388
• Bump docker/login-action from 3 to 4 by @dependabot[bot] in #387
• Bump cucumberVersion from 7.32.0 to 7.33.0 by @dependabot[bot] in #371
• Bump io.github.oshai:kotlin-logging-jvm from 7.0.13 to 7.0.14 by @dependabot[bot] in #378

Full Changelog: v1.30...v1.31

v1.30

What's Changed

• Properly handle voter stability in the Election
• Exit vote when a consensus event is received out of order
• Bump kotlinVersion from 2.3.0-RC3 to 2.3.0 by @dependabot[bot] in #375

Full Changelog: v1.29...v1.30

v1.29

⚠️ Compatibility warning

This node release introduces new JSON fields. SDK versions 5.4.0 and older were not tolerant to unknown fields and may fail decoding.

• Update the SDK to 5.4.1 (or newer).
• If you run wallet-server, make sure you’re on 1.5-release (or newer) for the same reason.

What's Changed

• Improve license
• Out-of-order vote buffer during dependency discovery
• Remove custom converters in favor of Atto Commons Spring Boot starter
• Account Controller OpenAPI enhancements + bean naming fixes
• Deadlock fix in drop-vote processing
• Transaction timestamp migration
• Transaction prioritizer refactor for concurrency
• Add VoteWeightController
• Close HTTP/WebSocket clients on stop
• Workflow + Docker + native-image cleanups
• Bump ktorVersion from 3.3.0 to 3.3.1 by @dependabot[bot] in #346
• Bump org.graalvm.buildtools.native from 0.11.1 to 0.11.2 by @dependabot[bot] in #348
• Bump kotlinVersion from 2.2.20 to 2.2.21 by @dependabot[bot] in #349
• Bump org.springframework.boot from 3.5.6 to 3.5.7 by @dependabot[bot] in #350
• Bump net.logstash.logback:logstash-logback-encoder from 8.1 to 9.0 by @dependabot[bot] in #353
• Bump cucumberVersion from 7.30.0 to 7.31.0 by @dependabot[bot] in #354
• Bump net.logstash.logback:logstash-logback-encoder from 8.1 to 9.0 by @dependabot[bot] in #355
• Bump ktorVersion from 3.3.1 to 3.3.2 by @dependabot[bot] in #356
• Bump org.springdoc:springdoc-openapi-starter-webflux-ui from 2.8.13 to 2.8.14 by @dependabot[bot] in #357
• Bump org.graalvm.buildtools.native from 0.11.2 to 0.11.3 by @dependabot[bot] in #359
• Bump org.jlleitschuh.gradle.ktlint from 13.1.0 to 14.0.1 by @dependabot[bot] in #358
• Bump cucumberVersion from 7.31.0 to 7.32.0 by @dependabot[bot] in #361
• Bump org.jetbrains.kotlinx:kotlinx-io-core from 0.8.0 to 0.8.2 by @dependabot[bot] in #364
• Update GraalVM Java version to 25 in test workflow by @rotilho in #340
• Bump ktorVersion from 3.3.2 to 3.3.3 by @dependabot[bot] in #365
• Bump io.mockk:mockk from 1.14.5 to 1.14.6 by @dependabot[bot] in #342
• Bump io.mockk:mockk from 1.14.6 to 1.14.7 by @dependabot[bot] in #370
• Bump kotlinVersion from 2.3.0-RC2 to 2.3.0-RC3 by @dependabot[bot] in #372

Full Changelog: v1.28...v1.29

v1.28

Atto follows a continuous delivery approach: we ship features and fixes in small, frequent releases so it’s easy to pinpoint issues and roll forward safely. v1.28 is a rare exception: a thematic, larger-than-usual drop centered on the bootstrap process.

Bootstrap is one of the hardest parts of the node: it’s big, highly parallel, and non-deterministic. Problems typically don’t crash it; they slow it down. This release brings a broad sweep of improvements (across discovery, gap handling, unchecked transactions, streaming, metrics, and lifecycle cleanup) to make bootstrap faster, more reliable, and easier to observe.

What’s Changed

• Add OCI labels, run as non-root, and adjust entrypoint in Dockerfile.
• Replace custom Docker build with docker/build-push-action@v6.
• Upgrade Gradle wrapper to 9.1.0.
• Update GraalVM Java versions in workflows; re-enable native-image where needed.
• Improved error handling for transaction streaming; lifecycle cleanup (AutoCloseable, @PreDestroy), virtual-thread executors, @Scheduled metrics refresh, cache support and cleanup across components.
• Numerous fixes and logs around gap discovery/resolution and unchecked transaction queries.
• Introduce UncheckedTransactionInserter to batch insert transactions by @rotilho in #339
• Bump ktorVersion from 3.2.3 to 3.3.0 by @dependabot[bot] in #333
• Bump commonsVersion from 5.2.0 to 5.2.2 by @dependabot[bot] in #330
• Bump cucumberVersion from 7.28.1 to 7.28.2 by @dependabot[bot] in #331
• Bump kotlinVersion from 2.2.10 to 2.2.20 by @dependabot[bot] in #332
• Bump org.springframework.boot from 3.5.5 to 3.5.6 by @dependabot[bot] in #335
• Bump commonsVersion from 5.2.2 to 5.3.0 by @dependabot[bot] in #334
• Bump cucumberVersion from 7.28.2 to 7.29.0 by @dependabot[bot] in #336
• Bump commonsVersion from 5.3.0 to 5.4.0 by @dependabot[bot] in #337
• Bump org.graalvm.buildtools.native from 0.11.0 to 0.11.1 by @dependabot[bot] in #338
• Bump cucumberVersion from 7.29.0 to 7.30.0 by @dependabot[bot] in #343

Full Changelog: v1.27...v1.28

v1.27

What's Changed

• Fix POST accounts/stream
• Bump cucumberVersion from 7.27.0 to 7.27.2 by @dependabot[bot] in #320
• Bump kotlinVersion from 2.2.0 to 2.2.10 by @dependabot[bot] in #319
• Bump org.jlleitschuh.gradle.ktlint from 13.0.0 to 13.1.0 by @dependabot[bot] in #325
• Bump cucumberVersion from 7.27.2 to 7.28.1 by @dependabot[bot] in #328
• Bump org.springframework.boot from 3.5.4 to 3.5.5 by @dependabot[bot] in #323
• Bump org.springdoc:springdoc-openapi-starter-webflux-ui from 2.8.10 to 2.8.13 by @dependabot[bot] in #329

Full Changelog: v1.26...v1.27

v1.26

What's Changed

• Refactor TransactionPrioritizer to validate active election threshold within queue mutex
• Introduce getMinimalToStaleWeight and use it to refine retry threshold in LastDiscoverer
• Fix hashComparator to compare distinct vote hashes
• Reduce ElectionProcessor.flush fixedRate to 1ms for improved responsiveness
• Refactor VotePrioritizer to optimize mutex handling and change duplicate detection logic to rely on vote hash
• Bump org.springdoc:springdoc-openapi-starter-webflux-ui from 2.8.9 to 2.8.10 by @dependabot[bot] in #322
• Bump io.github.oshai:kotlin-logging-jvm from 7.0.12 to 7.0.13 by @dependabot[bot] in #321

Full Changelog: v1.25...v1.26

v1.25

• Properly handle transaction idempotence

Full Changelog: v1.24...v1.25

v1.24

What's Changed

• Logging improvements
• Exit the VotePrioritizer scheduled job when mutex is locked
• Increase fixedRate for rebroadcast schedulers to 100 ms
• Exit the ElectionProcessor flush job when mutex is locked
• Reject RECEIVE transactions with a timestamp earlier than the receivable
• Bump actions/download-artifact from 4 to 5 by @dependabot[bot] in #318
• Bump io.github.oshai:kotlin-logging-jvm from 7.0.7 to 7.0.12 by @dependabot[bot] in #317

Full Changelog: v1.23...v1.24

v1.23

• Add indexes
• Add temporary top 100 accounts endpoint
• Make vote weight properties configurable with environment variables

Full Changelog: v1.22...v1.23