Highlights

Performance

• Improve histogram/summary performance under contention (#1794) by @jack-berg — Significant throughput improvements for high-contention scenarios by striping observationCount across multiple instances. Benchmarks show prometheusClassic improving from ~5,126 ops/s to ~14,624 ops/s (~185% improvement) and prometheusNative from ~3,854 ops/s to ~7,406 ops/s (~92% improvement).

Configuration

• Support environment variables in properties (#1828) by @zeitlinger — Adds environment variable support for configuration (e.g., IO_PROMETHEUS_EXPORTER_HTTP_SERVER_PORT) while maintaining full backward compatibility. Also introduces snake_case property naming (recommended) while keeping camelCase working.

API

• Allow metrics with the same name but different labels (#1800) by @jaydeluca — Enables registration of metrics with the same name, with validation at both registration and scrape time.
• Add stable Metrics class to decouple consumers from protobuf version (#1873) by @zeitlinger — Introduces a stable Metrics class so consumer code no longer needs import updates on protobuf upgrades.

OpenTelemetry

• Add OTel support module and make examples standalone (#1868) by @zeitlinger — New prometheus-metrics-otel-support module that bundles the OTel SDK and Prometheus exporter as a single dependency. Examples are now standalone and can be copy-pasted directly.
• Add docs and example for OTel JVM runtime metrics (#1861) by @zeitlinger

Exporters

• Add metricsHandlerPath and registerHealthHandler configuration options to HTTPServer (#1735) by @Donnerbart
• Disable compression in PrometheusScrapeHandler (#1691) by @Myllyenko — Adds ability to disable compression in PrometheusScrapeHandler.
• Prevent exception in HttpServer exporter when using custom root metrics path (#1772) by @Donnerbart

Instrumentation

• Add custom tags to JVM metrics (#1769) by @sibasispadhi
• Verify and document native histograms with custom buckets (NHCB) support (#1846) by @zeitlinger

What's Changed

🏕 Features

• Adding ability to disable compression in PrometheusScrapeHandler by @Myllyenko in #1691
• Add metricsHandlerPath and registerHealthHandler configuration options to HTTPServer by @Donnerbart in #1735
• Add custom tags to JVM metrics by @sibasispadhi in #1769
• Prevent exception in HttpServer exporter when using custom root metrics path by @Donnerbart in #1772
• Allow metrics with the same name different labels by @jaydeluca in #1800
• Improve histogram, summary performance under contention by striping observationCount by @jack-berg in #1794
• support environment variables in properties by @zeitlinger in #1828
• Verify and document native histograms with custom buckets (NHCB) support by @zeitlinger in #1846
• Remove help text validation by @jaydeluca in #1866
• Add docs and example for OTel JVM runtime metrics by @zeitlinger in #1861
• Add OTel support module and make examples standalone by @zeitlinger in #1868
• Add stable Metrics class to decouple consumers from protobuf version by @zeitlinger in #1873

🔧 Maintenance

• fix native test by @zeitlinger in #1729
• use graalvm version that renovate can update by @zeitlinger in #1733
• fix: update build command to include 'clean' for benchmarks by @zeitlinger in #1762
• fix blog post url by @zeitlinger in #1787
• Add test matrix for different java versions by @jaydeluca in #1781
• fix javadoc by @zeitlinger in #1809
• pom cleanup by @zeitlinger in #1810
• separate java update as graal is not working by @zeitlinger in #1811
• pin super linter by @zeitlinger in #1814
• improve code quality, part 1 by @zeitlinger in #1808
• make tests not public by @zeitlinger in #1818
• Make super-linter ARM friendly by @jaydeluca in #1817
• Run integration tests in matrix by @jaydeluca in #1802
• lint only modified links by @zeitlinger in #1819
• Run nightly benchmarks by @jaydeluca in #1803
• bundle renovate updates by @zeitlinger in #1829
• refactor: update exception handling to use specific exception types by @zeitlinger in #1843
• Reduce flakyness of testExemplarsClassicHistogram by @jaydeluca in #1842
• fix and test gh pages by @zeitlinger in #1845
• address todos by @zeitlinger in #1832
• re-use super linter script by @zeitlinger in #1847
• clean up link checking by @zeitlinger in #1850
• add branch coverage, better javadoc lints by @zeitlinger in #1851
• fix(renovate): enable updates for opentelemetry-instrumentation-bom-alpha by @zeitlinger in #1860
• ignore internal poms by @zeitlinger in #1862

🧹 Chore

• add IDEA icon by @zeitlinger in #1676

👒 Dependencies

• fix(deps): update dependency commons-io:commons-io to v2.21.0 by @renovate[bot] in #1670
• chore(deps): update eclipse-temurin:25-jre docker digest to 4a26dfc by @renovate[bot] in #1671
• chore(deps): update eclipse-temurin:25-jre docker digest to dbfb525 by @renovate[bot] in #1673
• chore(deps): update eclipse-temurin docker tag to v25.0.1_8-jre by @renovate[bot] in #1672
• chore(deps): update dependency mise to v2025.11.3 by @renovate[bot] in #1674
• chore(deps): update eclipse-temurin:25.0.1_8-jre docker digest to 31fb090 by @renovate[bot] in #1675
• chore(deps): update grafana/k6 docker digest to ef816d9 by @renovate[bot] in #1677
• fix(deps): update dependency org.apache.tomcat.embed:tomcat-embed-core to v11.0.14 by @renovate[bot] in #1678
• chore(deps): update eclipse-temurin:25.0.1_8-jre docker digest to ac6ce08 by @renovate[bot] in #1679
• fix(deps): update jetty monorepo to v12.1.4 by @renovate[bot] in #1680
• chore(deps): update jdx/mise-action action to v3.4.1 by @renovate[bot] in #1682
• chore(deps): update eclipse-temurin:25.0.1_8-jre docker digest to daeb27e by @renovate[bot] in #1683
• fix(deps): update protobuf monorepo by @renovate[bot] in #1681
• chore(deps): update dependency org.wiremock:wiremock to v3.13.2 by @renovate[bot] in #1685
• chore(deps): update eclipse-temurin:25.0.1_8-jre docker digest to 73fe03b by @renovate[bot] in #1687
• chore(deps): update dependency mise to v2025.11.5 by @renovate[bot] in #1688
• chore(deps): update dependency org.apache.maven.plugins:maven-jar-plugin to v3.5.0 by @renovate[bot] in #1686
• chore(deps): update actions/checkout digest to 93cb6ef by @renovate[bot] in #1689
• chore(deps): update actions/checkout action to v5.0.1 by @renovate[bot] in #1690
• chore(deps): update grafana/grafana docker tag to v12.3.0 by @renovate[bot] in #1693
• chore(deps): update dependency com.diffplug...

What's Changed

🏕 Features

• Optimize metric name validation to fix 2-3x performance regression by @Copilot in #1662
• feat: Add readTimeout and conenctionTimeout as configurable parameters by @hmhuan in #1658
• Fix escaping by @zeitlinger in #1668
• add sum and count for DistributionDataPoint by @zeitlinger in #1669

🧹 Chore

• openjdk image has disappeared by @zeitlinger in #1663
• add Benchmark update & cleanup mise tasks by @zeitlinger in #1664

👒 Dependencies

• chore(deps): update prom/prometheus docker tag to v3.7.3 by @renovate[bot] in #1653
• chore(deps): update dependency com.jayway.jsonpath:json-path to v2.10.0 by @renovate[bot] in #1654
• chore(deps): update jdx/mise-action action to v3.4.0 by @renovate[bot] in #1656
• chore(deps): update dependency com.uber.nullaway:nullaway to v0.12.11 by @renovate[bot] in #1655
• fix(deps): update junit-framework monorepo to v6.0.1 by @renovate[bot] in #1657
• chore(deps): update dependency mise to v2025.11.1 by @renovate[bot] in #1659
• chore(deps): update otel/opentelemetry-collector-contrib docker tag to v0.139.0 by @renovate[bot] in #1661
• chore(deps): update dependency com.uber.nullaway:nullaway to v0.12.12 by @renovate[bot] in #1665
• chore(deps): update dependency com.google.errorprone:error_prone_core to v2.44.0 by @renovate[bot] in #1667

New Contributors

• @Copilot made their first contribution in #1662
• @hmhuan made their first contribution in #1658

Full Changelog: v1.4.2...v1.4.3

What's Changed

🏕 Features

• feat: adds createdTimestamp to counters exposed via prometheus protouf protocol by @cmaune in #1532
• docs: Update classicBuckets() to classicUpperBounds() by @dubek in #1644

🧹 Chore

• update snapshot version by @zeitlinger in #1521
• zizmor is included in super linter by @zeitlinger in #1539
• add experimental warning by @zeitlinger in #1598
• Eclipse temurin 25 update by @jaydeluca in #1643
• fix build by @zeitlinger in #1652

👒 Dependencies

• Update jetty monorepo to v12.1.0 by @renovate[bot] in #1522
• Update jdx/mise-action action to v3 by @renovate[bot] in #1523
• Update dependency com.uber.nullaway:nullaway to v0.12.9 by @renovate[bot] in #1524
• Update grafana/k6 Docker digest to c5f7d22 by @renovate[bot] in #1525
• Update jdx/mise-action action to v3.1.0 by @renovate[bot] in #1526
• Update dependency io.dropwizard.metrics5:metrics-core to v5.0.2 by @renovate[bot] in #1527
• Update actions/setup-java action to v5 by @renovate[bot] in #1528
• Update dependency org.springframework.boot:spring-boot-starter-parent to v3.5.5 by @renovate[bot] in #1529
• Update dependency lychee to v0.20.0 by @renovate[bot] in #1531
• Update jdx/mise-action action to v3.2.0 by @renovate[bot] in #1533
• Update actions/upload-pages-artifact action to v4 by @renovate[bot] in #1534
• Update dependency io.dropwizard.metrics:metrics-core to v4.2.34 by @renovate[bot] in #1535
• Update dependency mise to v2025.8.20 by @renovate[bot] in #1536
• Update dependency lychee to v0.20.1 by @renovate[bot] in #1537
• Update super-linter/super-linter action to v8.1.0 by @renovate[bot] in #1530
• Update otel/opentelemetry-collector-contrib Docker tag to v0.133.0 by @renovate[bot] in #1538
• Update grafana/k6 Docker digest to 0dd39a1 by @renovate[bot] in #1540
• Update module go:github.com/gohugoio/hugo to v0.149.0 by @renovate[bot] in #1541
• Update module go:github.com/grafana/oats to v0.4.1 by @renovate[bot] in #1542
• Update dependency io.dropwizard.metrics:metrics-core to v4.2.35 by @renovate[bot] in #1543
• Update dependency io.dropwizard.metrics5:metrics-core to v5.0.3 by @renovate[bot] in #1544
• Update dependency maven-wrapper to v3.3.3 by @renovate[bot] in #1545
• Update dependency io.dropwizard.metrics:metrics-core to v4.2.36 by @renovate[bot] in #1546
• Update dependency io.dropwizard.metrics5:metrics-core to v5.0.4 by @renovate[bot] in #1547
• chore(deps): update eclipse-temurin:21.0.8_9-jre docker digest to 19ec9fa by @renovate[bot] in #1549
• chore(deps): update eclipse-temurin:21.0.8_9-jre docker digest to 2f696f6 by @renovate[bot] in #1550
• chore(deps): update otel/opentelemetry-collector-contrib docker tag to v0.134.1 by @renovate[bot] in #1551
• chore(deps): update module go:github.com/gohugoio/hugo to v0.149.1 by @renovate[bot] in #1552
• chore(deps): update dependency org.codehaus.mojo:versions-maven-plugin to v2.19.0 by @renovate[bot] in #1553
• fix(deps): update dependency org.apache.tomcat.embed:tomcat-embed-core to v11.0.11 by @renovate[bot] in #1554
• chore(deps): update dependency mise to v2025.9.6 by @renovate[bot] in #1556
• fix(deps): update jetty monorepo to v12.1.1 by @renovate[bot] in #1558
• chore(deps): update module go:github.com/gohugoio/hugo to v0.150.0 by @renovate[bot] in #1559
• chore(deps): update otel/opentelemetry-collector-contrib docker tag to v0.135.0 by @renovate[bot] in #1560
• chore(deps): update eclipse-temurin:21.0.8_9-jre docker digest to 49f7a6b by @renovate[bot] in #1562
• chore(deps): update dependency org.apache.maven.plugins:maven-shade-plugin to v3.6.1 by @renovate[bot] in #1564
• chore(deps): update dependency org.apache.maven.plugins:maven-failsafe-plugin to v3.5.4 by @renovate[bot] in #1563
• chore(deps): update dependency org.apache.maven.plugins:maven-surefire-plugin to v3.5.4 by @renovate[bot] in #1565
• chore(deps): update dependency mise to v2025.9.10 by @renovate[bot] in #1567
• fix(deps): update protobuf monorepo by @renovate[bot] in #1566
• chore(deps): update eclipse-temurin:21.0.8_9-jre docker digest to bc03ecb by @renovate[bot] in #1568
• fix(deps): update dependency io.dropwizard.metrics:metrics-core to v4.2.37 by @renovate[bot] in #1569
• fix(deps): update dependency io.dropwizard.metrics5:metrics-core to v5.0.5 by @renovate[bot] in #1570
• chore(deps): update dependency com.uber.nullaway:nullaway to v0.12.10 by @renovate[bot] in #1571
• chore(deps): update eclipse-temurin:21.0.8_9-jre docker digest to 9dc7449 by @renovate[bot] in #1572
• fix(deps): update dependency com.google.guava:guava to v33.5.0-jre by @renovate[bot] in #1573
• fix(deps): update dependency org.springframework.boot:spring-boot-starter-parent to v3.5.6 by @renovate[bot] in #1574
• chore(deps): update dependency org.assertj:assertj-core to v3.27.5 by @renovate[bot] in #1575
• chore(deps): update dependency com.google.errorprone:error_prone_core to v2.42.0 by @renovate[bot] in #1579
• chore(deps): update dependency org.mockito:mockito-core to v5.20.0 by @renovate[bot] in #1580
• chore(deps): update dependency org.apache.maven.plugins:maven-javadoc-plugin to v3.12.0 by @renovate[bot] in #1581
• chore(deps): update prom/prometheus docker tag to v3.6.0 by @renovate[bot] in #1582
• chore(deps): update dependency mise to v2025.9.15 by @renovate[bot] in #1583
• chore(deps): update dependency org.apache.maven.plugins:maven-compiler-plugin to v3.14.1 by @renovate[bot] in #1584
• chore(deps): update dependency org.codehaus.mojo:versions-maven-plugin to v2.19.1 by @renovate[bot] in #1585
• chore(deps): update dependency org.assertj:assertj-core to v3.27.6 by @renovate[bot] in #1586
• chore(deps): update grafana/k6 docker digest to 290b029 by @renovate[bot] in #1587
• chore(deps): update otel/opentelemetry-collector-contrib docker tag to v0.136.0 by @renovate[bot] in #1589
• chore(deps): update dependency org.sonatype.central:central-publishing-maven-plugin to v0.9.0 by @renovate[bot] in #1588
• chore(deps): update grafana/grafana docker tag to v12.1.2 by @renovate[bot] in #1590
• chore(deps): update grafana/grafana docker tag to v12.2.0 by @renovate[bot] in #1591
• chore(deps): update actions/cache digest to 0057852 by @renovate[bot] in #1592
• chore(deps): update dependency com.diffplug.spotless:spotless-maven-plugin to v3 by @renovate[bot] in #1593
• chore(deps): update dependency maven-wrapper to v3.3.4 by @renovate[bot] in #1594
• chore(deps): update module go:github.com/gohugoio/hugo to v0.150.1 by @renovate[bot] in #1595
• chore(deps): update dependency j...

What's Changed

🏕 Features

• add missing builder method for escaping scheme by @zeitlinger in #1518

Full Changelog: v1.4.0...v1.4.1

What's Changed

Unicode support

UTF-8 is now supported for metric and label names!

• this is a backwards compatible change
  • only Prometheus servers that can handle UTF-8 will actually see it
  • otherwise you'll still get the same _ replacement characters as before
• in the push gateway, you have to enable UTF-8 support explicitly
• unit names still do not support UTF-8
• refer to the documentation for details

🏕 Features

• UTF-8 support in metric and label names by @fedetorres93 in #1255
• public StatefulMetric by @sideeffffect in #1474
• Builder.withoutExemplars() setting cannot be overridden via properties by @cruftex in #1477
• Update PrometheusScrapeHandler compression handling by @jaydeluca in #1493

🧹 Chore

• pin mise by @zeitlinger in #1475
• add Nullaway by @zeitlinger in #1511

👒 Dependencies

• Update dependency com.diffplug.spotless:spotless-maven-plugin to v2.45.0 by @renovate[bot] in #1452
• Update module go:github.com/gohugoio/hugo to v0.148.0 by @renovate[bot] in #1453
• Update dependency com.google.errorprone:error_prone_core to v2.40.0 by @renovate[bot] in #1454
• Update eclipse-temurin:21.0.7_6-jre Docker digest to f7d9b21 by @renovate[bot] in #1455
• Update module go:github.com/gohugoio/hugo to v0.148.1 by @renovate[bot] in #1456
• Update jdx/mise-action action to v2.4.0 by @renovate[bot] in #1457
• Update dependency com.github.ben-manes.caffeine:caffeine to v3.2.2 by @renovate[bot] in #1458
• Update prom/prometheus Docker tag to v3.5.0 by @renovate[bot] in #1459
• Update otel/opentelemetry-collector-contrib Docker tag to v0.130.0 by @renovate[bot] in #1460
• Update dependency org.apache.maven.plugins:maven-enforcer-plugin to v3.6.1 by @renovate[bot] in #1462
• Update dependency maven to v3.9.11 by @renovate[bot] in #1461
• Update eclipse-temurin:21.0.7_6-jre Docker digest to 28bede2 by @renovate[bot] in #1463
• Update eclipse-temurin:21.0.7_6-jre Docker digest to 313b224 by @renovate[bot] in #1464
• Update dependency commons-io:commons-io to v2.20.0 by @renovate[bot] in #1468
• Update dependency java to v21.0.8+9.0.LTS by @renovate[bot] in #1465
• Update module go:github.com/grafana/oats to v0.4.0 by @renovate[bot] in #1466
• Update eclipse-temurin:21.0.7_6-jre Docker digest to bca347d by @renovate[bot] in #1469
• Update dependency com.diffplug.spotless:spotless-maven-plugin to v2.46.0 by @renovate[bot] in #1470
• Update super-linter/super-linter action to v8 by @renovate[bot] in #1467
• Update junit-framework monorepo to v5.13.4 by @renovate[bot] in #1472
• Update dependency com.diffplug.spotless:spotless-maven-plugin to v2.46.1 by @renovate[bot] in #1473
• Update otel/opentelemetry-collector-contrib Docker tag to v0.130.1 by @renovate[bot] in #1476
• Update grafana/grafana Docker tag to v12.1.0 by @renovate[bot] in #1479
• Update jdx/mise-action action to v2.4.2 by @renovate[bot] in #1480
• Update dependency org.springframework.boot:spring-boot-starter-parent to v3.5.4 by @renovate[bot] in #1481
• Update module go:github.com/gohugoio/hugo to v0.148.2 by @renovate[bot] in #1484
• Update jdx/mise-action action to v2.4.4 by @renovate[bot] in #1485
• Update dependency mise to v2025.7.29 by @renovate[bot] in #1486
• Update otel/opentelemetry-collector-contrib Docker tag to v0.131.0 by @renovate[bot] in #1487
• Update dependency com.google.errorprone:error_prone_core to v2.41.0 by @renovate[bot] in #1482
• Update otel/opentelemetry-collector-contrib Docker tag to v0.131.1 by @renovate[bot] in #1491
• Update eclipse-temurin Docker tag to v21.0.8_9-jre by @renovate[bot] in #1490
• Update dependency org.apache.tomcat.embed:tomcat-embed-core to v11.0.10 by @renovate[bot] in #1492
• Update grafana/tempo Docker tag to v2.8.2 by @renovate[bot] in #1494
• Update jetty monorepo to v12.0.24 by @renovate[bot] in #1495
• Update dependency org.assertj:assertj-core to v3.27.4 by @renovate[bot] in #1497
• Update actions/cache digest to 0400d5f by @renovate[bot] in #1496
• Update dependency mise to v2025.8.7 by @renovate[bot] in #1499
• Update actions/checkout action to v4.3.0 by @renovate[bot] in #1501
• Update actions/checkout digest to 08eba0b by @renovate[bot] in #1500
• Update actions/checkout action to v5 by @renovate[bot] in #1502
• Update eclipse-temurin:21.0.8_9-jre Docker digest to b2fa3ed by @renovate[bot] in #1503
• Update jetty monorepo to v12.0.25 by @renovate[bot] in #1504
• Update eclipse-temurin:21.0.8_9-jre Docker digest to ea350fe by @renovate[bot] in #1505
• Update otel/opentelemetry-collector-contrib Docker tag to v0.132.0 by @renovate[bot] in #1506
• Update otel/opentelemetry-collector-contrib Docker tag to v0.132.1 by @renovate[bot] in #1507
• Update grafana/k6 Docker digest to 072db02 by @renovate[bot] in #1508
• Update grafana/grafana Docker tag to v12.1.1 by @renovate[bot] in #1509
• Update otel/opentelemetry-collector-contrib Docker tag to v0.132.2 by @renovate[bot] in #1510
• Update dependency org.mockito:mockito-core to v5.19.0 by @renovate[bot] in #1514
• Update dependency com.google.protobuf:protobuf-java to v4.32.0 by @renovate[bot] in #1513
• Update dependency org.apache.maven.plugins:maven-javadoc-plugin to v3.11.3 by @renovate[bot] in #1515
• Update dependency mise to v2025.8.12 by @renovate[bot] in #1516
• Update otel/opentelemetry-collector-contrib Docker tag to v0.132.4 by @renovate[bot] in #1517

New Contributors

• @sideeffffect made their first contribution in #1474
• @cruftex made their first contribution in #1477
• @jaydeluca made their first contribution in #1493
• @fedetorres93 made their first contribution in #1255

Full Changelog: v1.3.10...v1.4.0

What's Changed

🏕 Features

• Add exposition textformats to bom by @technicallyjames in #1451

👒 Dependencies

• Update junit-framework monorepo to v5.13.3 by @renovate in #1448
• Update dependency org.apache.tomcat.embed:tomcat-embed-core to v11.0.9 by @renovate in #1449

Full Changelog: v1.3.9...v1.3.10

What's Changed

🏕 Features

• Fixes #1431 - shaded exposition-formats/exported-opentelemetry by @lenoch7 in #1441

🧹 Chore

• fix gh pages locally by @zeitlinger in #1374
• Improve renovate by @zeitlinger in #1379
• fix renovate by @zeitlinger in #1385
• Changed workflow to only build GitHub pages on prometheus/client_java by @dhoard in #1392
• renovate exclude by @zeitlinger in #1395
• MISE_ENABLE_TOOLS is not supported by mise action by @zeitlinger in #1437
• add label to renovate prs, fix release by @zeitlinger in #1446

👒 Dependencies

• Configure Renovate by @renovate in #1375
• Update dependency io.dropwizard.metrics:metrics-core to v4.2.32 by @renovate in #1377
• Update jdx/mise-action digest to c160601 by @renovate in #1376
• Update dependency java to v17.0.15+6 by @renovate in #1380
• Update jdx/mise-action action to v2.2.2 by @renovate in #1381
• Update eclipse-temurin Docker tag to v17.0.15_6-jre by @renovate in #1383
• Update grafana/grafana Docker tag to v10.4.19 by @renovate in #1384
• Update grafana/tempo Docker tag to v2.7.2 by @renovate in #1386
• Update prom/prometheus Docker tag to v2.55.1 by @renovate in #1389
• Update otel/opentelemetry-collector-contrib Docker tag to v0.126.0 by @renovate in #1388
• Update jdx/mise-action action to v2.2.3 by @renovate in #1390
• Update dependency java to v21 by @renovate in #1391
• Update eclipse-temurin Docker tag to v21.0.7_6-jre by @renovate in #1393
• Update grafana/grafana Docker tag to v12 by @renovate in #1394
• Update prom/prometheus Docker tag to v3 by @renovate in #1396
• Update otel/opentelemetry-collector-contrib Docker tag to v0.127.0 by @renovate in #1397
• Update dependency org.codehaus.mojo:exec-maven-plugin to v3.5.1 by @renovate in #1399
• Update dependency com.diffplug.spotless:spotless-maven-plugin to v2.44.5 by @renovate in #1400
• Update module go:github.com/gohugoio/hugo to v0.147.6 by @renovate in #1401
• Update dependency org.testcontainers:junit-jupiter to v1.21.1 by @renovate in #1403
• Update openjdk Docker tag to v11.0.16-jre by @renovate in #1405
• Update prom/prometheus Docker tag to v3.4.1 by @renovate in #1407
• Update module go:github.com/gohugoio/hugo to v0.147.7 by @renovate in #1406
• Update dependency org.apache.maven.plugins:maven-clean-plugin to v3.5.0 by @renovate in #1408
• Update protobuf monorepo by @renovate in #1402
• Update junit5 monorepo to v5.13.0 by @renovate in #1404
• Update module go:github.com/grafana/oats to v0.3.2 by @renovate in #1409
• Update jetty monorepo to v12.0.22 by @renovate in #1410
• Update dependency org.codehaus.mojo:build-helper-maven-plugin to v3.6.1 by @renovate in #1412
• Update dependency maven to v3.9.10 by @renovate in #1413
• Update junit5 monorepo to v5.13.1 by @renovate in #1414
• Update module go:github.com/gohugoio/hugo to v0.147.8 by @renovate in #1415
• Update dependency com.github.ben-manes.caffeine:caffeine to v3.2.1 by @renovate in #1416
• Update dependency org.apache.tomcat.embed:tomcat-embed-core to v11.0.8 by @renovate in #1417
• Update otel/opentelemetry-collector-contrib Docker tag to v0.128.0 by @renovate in #1418
• Update grafana/tempo Docker tag to v2.8.0 by @renovate in #1419
• Update dependency org.wiremock:wiremock to v3.13.1 by @renovate in #1420
• Update dependency org.sonatype.central:central-publishing-maven-plugin to v0.8.0 by @renovate in #1422
• Update grafana/grafana Docker tag to v12.0.2 by @renovate in #1423
• Update grafana/tempo Docker tag to v2.8.1 by @renovate in #1424
• Update dependency org.testcontainers:junit-jupiter to v1.21.2 by @renovate in #1425
• Update dependency org.springframework.boot:spring-boot-starter-parent to v3.5.1 by @renovate in #1426
• Update dependency org.springframework.boot:spring-boot-starter-parent to v3.5.2 by @renovate in #1427
• Update dependency org.springframework.boot:spring-boot-starter-parent to v3.5.3 by @renovate in #1429
• Update dependency io.dropwizard.metrics:metrics-core to v4.2.33 by @renovate in #1428
• Update module go:github.com/gohugoio/hugo to v0.147.9 by @renovate in #1432
• Update dependency io.dropwizard.metrics5:metrics-core to v5.0.1 by @renovate in #1430
• Update junit-jupiter.version to v5.13.2 by @renovate in #1434
• Update jdx/mise-action action to v2.3.1 by @renovate in #1436
• Update prom/prometheus Docker tag to v3.4.2 by @renovate in #1438
• Update dependency org.testcontainers:junit-jupiter to v1.21.3 by @renovate in #1439
• Update dependency org.apache.maven.plugins:maven-gpg-plugin to v3.2.8 by @renovate in #1442
• Update dependency org.apache.maven.plugins:maven-enforcer-plugin to v3.6.0 by @renovate in #1443
• Update jetty monorepo to v12.0.23 by @renovate in #1444
• Update otel/opentelemetry-collector-contrib Docker tag to v0.129.1 by @renovate in #1445
• Update dependency com.google.errorprone:error_prone_core to v2.39.0 by @renovate in #1435
• Pin dependencies by @renovate in #1447

New Contributors

• @renovate made their first contribution in #1375
• @lenoch7 made their first contribution in #1441

Full Changelog: v1.3.8...v1.3.9

What's Changed

🏕 Features

• Introduce removeIf method to StatefulMetric by @dao-jun in #1339
• bom should not include junit by @zeitlinger in #1359
• Fixed typos by @dhoard in #1363
• Let clients of DropwizardExports handle validation errors by @mnssn in #1354
• Dropwizard apply label mapper to snapshot metrics by @KacperFilutowski-TomTom in #1266

👒 Dependencies

• Bump jetty-server.version from 12.0.20 to 12.0.21 by @dependabot in #1349
• Bump org.apache.tomcat.embed:tomcat-embed-core from 11.0.6 to 11.0.7 by @dependabot in #1350
• Bump com.google.protobuf:protobuf-java from 4.30.2 to 4.31.0 by @dependabot in #1357
• Bump io.opentelemetry.instrumentation:opentelemetry-instrumentation-bom-alpha from 2.15.0-alpha to 2.16.0-alpha by @dependabot in #1358
• Bump super-linter/super-linter from 7.3.0 to 7.4.0 by @dependabot in #1362
• Bump org.mockito:mockito-core from 5.17.0 to 5.18.0 by @dependabot in #1365
• Bump org.springframework.boot:spring-boot-starter-parent from 3.4.5 to 3.4.6 by @dependabot in #1366

New Contributors

• @dao-jun made their first contribution in #1339
• @mnssn made their first contribution in #1354
• @KacperFilutowski-TomTom made their first contribution in #1266

Full Changelog: v1.3.7...v1.3.8

What's Changed

🏕 Features

• Use bulk string writes for text formats by @marschall in #1273
• fix method name in two Histogram builder method javadocs by @benjaminp in #1302
• Set a name to threads created by Scheduler Threadfactory by @edoardocomar in #1307
• add option to skip the shaded protobuf and otel libraries by @zeitlinger in #1293
• fix timestamp representation by @zeitlinger in #1292
• Eagerly reject null label values by @benjaminp in #1335
• Fix broken link to "Exclude protobuf exposition format" section by @izeye in #1347
• Synchronize common files from prometheus/prometheus by @prombot in #1340

🧹 Chore

• increase coverage by @zeitlinger in #1276
• fix gh pages by @zeitlinger in #1278
• Fix documentation typo by @bzier in #1282
• use Mise by @zeitlinger in #1319
• Fix next SNAPSHOT version by @fstab in #1217
• add Zizmor by @zeitlinger in #1337
• fix gh pages, add super linter by @zeitlinger in #1338
• add release.yml by @zeitlinger in #1341
• Fix by @zeitlinger in #1342
• fix lint by @zeitlinger in #1343
• Fix release by @zeitlinger in #1344

👒 Dependencies

• Bump io.opentelemetry.instrumentation:opentelemetry-instrumentation-bom-alpha from 2.12.0-alpha to 2.13.0-alpha by @dependabot in #1275
• Bump org.apache.tomcat.embed:tomcat-embed-core from 11.0.2 to 11.0.4 by @dependabot in #1274
• Bump org.apache.maven.plugins:maven-clean-plugin from 3.4.0 to 3.4.1 by @dependabot in #1279
• Bump io.opentelemetry.instrumentation:opentelemetry-instrumentation-bom-alpha from 2.13.0-alpha to 2.13.1-alpha by @dependabot in #1280
• Bump org.testcontainers:junit-jupiter from 1.20.4 to 1.20.5 by @dependabot in #1281
• Bump org.awaitility:awaitility from 4.2.2 to 4.3.0 by @dependabot in #1286
• Bump com.diffplug.spotless:spotless-maven-plugin from 2.44.2 to 2.44.3 by @dependabot in #1284
• Bump org.apache.maven.plugins:maven-compiler-plugin from 3.13.0 to 3.14.0 by @dependabot in #1283
• Bump org.springframework.boot:spring-boot-starter-parent from 3.4.2 to 3.4.3 by @dependabot in #1285
• Bump org.slf4j:slf4j-simple from 2.0.16 to 2.0.17 by @dependabot in #1288
• Bump org.apache.maven.plugins:maven-project-info-reports-plugin from 3.8.0 to 3.9.0 by @dependabot in #1290
• Bump org.apache.maven.plugins:maven-deploy-plugin from 3.1.3 to 3.1.4 by @dependabot in #1291
• Bump io.opentelemetry.instrumentation:opentelemetry-instrumentation-bom-alpha from 2.13.1-alpha to 2.13.2-alpha by @dependabot in #1289
• Bump junit-jupiter.version from 5.11.4 to 5.12.0 by @dependabot in #1287
• Bump org.apache.maven.plugins:maven-install-plugin from 3.1.3 to 3.1.4 by @dependabot in #1294
• Bump org.mockito:mockito-core from 5.15.2 to 5.16.0 by @dependabot in #1297
• Bump io.opentelemetry.instrumentation:opentelemetry-instrumentation-bom-alpha from 2.13.2-alpha to 2.13.3-alpha by @dependabot in #1296
• Bump org.testcontainers:junit-jupiter from 1.20.5 to 1.20.6 by @dependabot in #1298
• Bump org.wiremock:wiremock from 3.12.0 to 3.12.1 by @dependabot in #1295
• Bump com.google.protobuf:protobuf-java from 4.29.3 to 4.30.0 by @dependabot in #1299
• Bump jetty-server.version from 12.0.16 to 12.0.17 by @dependabot in #1300
• Bump org.apache.tomcat.embed:tomcat-embed-core from 11.0.4 to 11.0.5 by @dependabot in #1301
• Bump junit-jupiter.version from 5.12.0 to 5.12.1 by @dependabot in #1304
• Bump io.opentelemetry.instrumentation:opentelemetry-instrumentation-bom-alpha from 2.13.3-alpha to 2.14.0-alpha by @dependabot in #1306
• Bump com.google.protobuf:protobuf-java from 4.30.0 to 4.30.1 by @dependabot in #1305
• Bump org.mockito:mockito-core from 5.16.0 to 5.16.1 by @dependabot in #1308
• Bump jetty-server.version from 12.0.17 to 12.0.18 by @dependabot in #1309
• Bump com.google.guava:guava from 33.4.0-jre to 33.4.5-jre by @dependabot in #1310
• Bump com.google.errorprone:error_prone_core from 2.36.0 to 2.37.0 by @dependabot in #1311
• Bump org.springframework.boot:spring-boot-starter-parent from 3.4.3 to 3.4.4 by @dependabot in #1312
• Bump com.google.guava:guava from 33.4.5-jre to 33.4.6-jre by @dependabot in #1313
• Bump com.google.protobuf:protobuf-java from 4.30.1 to 4.30.2 by @dependabot in #1314
• Bump org.apache.maven.plugins:maven-surefire-plugin from 3.5.2 to 3.5.3 by @dependabot in #1315
• Bump org.jacoco:jacoco-maven-plugin from 0.8.12 to 0.8.13 by @dependabot in #1318
• Bump org.apache.maven.plugins:maven-failsafe-plugin from 3.5.2 to 3.5.3 by @dependabot in #1316
• Bump org.mockito:mockito-core from 5.16.1 to 5.17.0 by @dependabot in #1320
• Bump jetty-server.version from 12.0.18 to 12.0.19 by @dependabot in #1317
• Bump com.diffplug.spotless:spotless-maven-plugin from 2.44.3 to 2.44.4 by @dependabot in #1322
• Bump io.opentelemetry.instrumentation:opentelemetry-instrumentation-bom-alpha from 2.14.0-alpha to 2.15.0-alpha by @dependabot in #1326
• Bump org.apache.tomcat.embed:tomcat-embed-core from 11.0.5 to 11.0.6 by @dependabot in #1324
• Bump com.google.guava:guava from 33.4.6-jre to 33.4.7-jre by @dependabot in #1323
• Bump junit-jupiter.version from 5.12.1 to 5.12.2 by @dependabot in #1327
• Bump commons-io:commons-io from 2.18.0 to 2.19.0 by @dependabot in #1328
• Bump junit-jupiter.version from 5.12.2 to 5.12.2 by @dependabot in #1329
• Bump com.google.guava:guava from 33.4.7-jre to 33.4.8-jre by @dependabot in #1330
• Bump com.google.errorprone:error_prone_core from 2.37.0 to 2.38.0 by @dependabot in #1332
• Bump org.wiremock:wiremock from 3.12.1 to 3.13.0 by @dependabot in #1334
• Bump org.testcontainers:junit-jupiter from 1.20.6 to 1.21.0 by @dependabot in #1333
• Bump org.springframework.boot:spring-boot-starter-parent from 3.4.4 to 3.4.5 by @dependabot in #1336
• Bump jetty-server.version from 12.0.19 to 12.0.20 by @dependabot in #1345
• Bump jdx/mise-action from 2.2.1 to 2.2.2 by @dependabot in #1348

New Contributors

• @marschall made their first contribution in #1273
• @bzier made their first contribution in #1282
• @benjaminp made their first contribution in #1302
• @edoardocomar made their first contribution in #1307
• @izeye made their first contribution in #1347

Full Changelog: v1.3.6...v1.3.7

What's Changed

• rename files to avoid dependabot security warnings by @zeitlinger in #1239
• Use buffered writer by @michaldo in #1241
• Use buffered writer by @dhoard in #1248
• add dropwizard to bom by @zeitlinger in #1250
• Caffeine instrumentation: add weighted size metric by @jhominal in #1251
• Add documentation pages for Caffeine and Guava cache instrumentation libraries by @jhominal in #1262
• bom should not include guava - it was only for internal code reuse by @zeitlinger in #1269

New Contributors

• @Stephan202 made their first contribution in #1242
• @michaldo made their first contribution in #1241
• @jhominal made their first contribution in #1251

Full Changelog: v1.3.5...v1.3.6