EXCEEDS logo
Exceeds
Jared Anderson

PROFILE

Jared Anderson

Jonathan Handers contributed to the OpenLiberty/open-liberty repository by engineering robust backend features and infrastructure improvements across Java EE and MicroProfile platforms. He delivered concurrency enhancements, security context integration, and modular test architectures, often refactoring core Java components for performance and maintainability. Jonathan modernized build systems using Gradle and optimized class loading, caching, and dependency management to support evolving Java versions. His work included integrating new Jakarta EE features, improving authentication subsystems, and streamlining packaging for reliable releases. Leveraging Java, Gradle, and Eclipse, Jonathan’s solutions addressed scalability, compatibility, and developer workflow challenges with a focus on stability and long-term maintainability.

Overall Statistics

Feature vs Bugs

74%Features

Repository Contributions

150Total
Bugs
19
Commits
150
Features
53
Lines of code
48,746
Activity Months19

Work History

February 2026

6 Commits • 3 Features

Feb 1, 2026

February 2026 monthly summary for repository OpenLiberty/open-liberty. Focused on delivering performance improvements, stability enhancements, and developer experience upgrades. Key features include: per-subject cache refactor in authentication subsystem with performance and thread-safety gains; beta readiness transitions for appAuthentication-3.1 and webProfile-11.0; threading model improvements by switching default BlockingQueue to ConcurrentPriorityBlockingQueue with updated documentation; and IDE/test infrastructure refinements to Eclipse build paths and package-aligned test files. These efforts, backed by targeted commits, improved reliability, faster authentication operations, and smoother development workflows.

January 2026

6 Commits • 3 Features

Jan 1, 2026

January 2026 performance summary for OpenLiberty/open-liberty focused on reliability, efficiency, and capability expansion. Delivered packaging reliability improvements, hardened server restore scenarios, and feature upgrades while modernizing the build lifecycle. Business value includes more reliable distributions, safer restarts, faster and clearer builds, and updated dependencies for security and ecosystem compatibility.

December 2025

8 Commits • 4 Features

Dec 1, 2025

December 2025: OpenLiberty/open-liberty focused on Java modernization, modular test architecture, and JMS startup reliability, complemented by targeted maintenance to streamline future builds. Delivered changes enhance developer velocity, runtime stability, and build flexibility, aligning with the project’s long-term goals for modern Java support and scalable test organization.

November 2025

8 Commits • 3 Features

Nov 1, 2025

November 2025 monthly summary for OpenLiberty/open-liberty. Delivered focused improvements across IDE integration, release governance, and Java 25 readiness, with a stability fix to server.xml handling. Key outcomes include Eclipse IDE build/config stabilization, robust release gating to prevent production issues, and codebase updates for Java 25 compatibility.

October 2025

17 Commits • 2 Features

Oct 1, 2025

October 2025: Build system modernization and stability improvements across OpenLiberty/open-liberty. Key work included upgrading Gradle to 9.x with 9.1.0 support, refactoring build tasks, upgrading Spring Boot tooling for compatibility, and aligning dependencies for Gradle 9. Consolidated packaging/build scripts and release configurations to enable faster, more reliable releases. Addressed test stability and release behavior through TCK result writer revert and test release policy adjustments. Reverted MD5 hashing for library listings due to SHA-512 issues, and updated documentation to ensure Java 21 compatibility. Overall impact: smoother release cycles, stronger compatibility with modern Java/Spring tooling, and clearer test/release governance.

September 2025

11 Commits • 2 Features

Sep 1, 2025

September 2025 monthly summary for OpenLiberty/open-liberty. Delivered Jakarta EE readiness and improved build tooling, enabling smoother releases and broader Java/Jakarta compatibility. Focused on Java/Jakarta compatibility and API evolution, plus build, deployment, and testing enhancements to tighten release quality and reduce integration risk.

August 2025

9 Commits • 3 Features

Aug 1, 2025

August 2025 — OpenLiberty/open-liberty: Delivered packaging, test, and compatibility improvements with direct business value: corrected packaging of MicroProfile 7.0/7.1 for webprofile and Jakarta EE 11 archives, stabilized test infrastructure with Java 11 minimum, and addressed critical bugs and dependency issues to improve reliability, security, and developer velocity. Key outcomes include Eclipse-friendly builds, reduced test flakiness, robust interruption semantics, safer SPNEGO packaging behavior, and upgraded bcprov for SSHD compatibility.

July 2025

14 Commits • 5 Features

Jul 1, 2025

July 2025 (OpenLiberty/open-liberty) — concise monthly summary focused on business value and technical achievements. Key features delivered include RestEasy MP Rest Client 4.0 integration with reliability enhancements (proxy invocations, client header providers, request filtering) and memory-leak fixes, plus a base integration for RestEasy MP Rest Client 3.0 with testing optimizations. XML Web Services Client support (xmlWSClient-4.0) for EE 11 was introduced with client configuration and test adjustments. Significant logging and resource management improvements were implemented to reduce overhead and prevent REST client lifecycle warnings (including improved TrOSGi logging handling and proper RestClient lifecycle management). Packaging and archive updates were applied to align with MicroProfile 7.1 in the webprofile 10 archive and EE 10 archive configurations.

June 2025

10 Commits • 5 Features

Jun 1, 2025

June 2025 performance summary for OpenLiberty/open-liberty: focused on stabilizing builds, tightening packaging, and improving runtime reliability. Delivered cross-project build/packaging hardening, enhanced class loading stability and diagnostics, repository integration improvements, robust test bundle access, and data/module organization enhancements. Result is more reliable artifact creation, reduced flaky builds, and clearer module boundaries to accelerate future development and QA cycles.

May 2025

6 Commits • 3 Features

May 1, 2025

May 2025 monthly summary focusing on key accomplishments, business value, and technical achievements across core platform and TCK suites.

April 2025

12 Commits • 3 Features

Apr 1, 2025

April 2025 performance summary for OpenLiberty/open-liberty: Key platform enhancements delivered, extended compatibility across MicroProfile 7.x and Jakarta EE 11, and strengthened test infrastructure. Major bugs fixed to improve reliability and data integrity. Overall impact includes faster customer migration to MP 7.x/Jakarta EE 11, more robust runtime behavior, and improved API/SPI documentation tooling. Technologies demonstrated include Java platform updates, Charset API usage, concurrency-safe test code (ConcurrentHashMap), build/config modernization, and API/SPI documentation tooling.

March 2025

8 Commits • 3 Features

Mar 1, 2025

2025-03 monthly summary for OpenLiberty/open-liberty: Implemented stability, startup performance, and build clarity improvements. Key work includes stabilizing JDBC test suite with Java security fixes, hardening startup by refactoring ApplicationRegistry with constructor-injected dependencies and optimizing class-loading paths, decoupling SyncToOSThread with a new metadata interface, and cleaning build configuration by removing duplicate paths in bnd.bnd. The changes improve test reliability, startup reliability, deployment consistency, and security posture, enabling faster, safer releases and easier maintenance.

February 2025

13 Commits • 4 Features

Feb 1, 2025

February 2025 monthly summary for OpenLiberty/open-liberty: delivered key features to streamline build and packaging, aligned security test configurations with EE8/JACC and AppSecurity 2.0, strengthened test infrastructure, cleaned up build/IDE metadata, and advanced Jakarta Authorization 3.0 with new mappings and policy-provider integrations. These changes reduce packaging complexity, improve test reliability and coverage, and lay groundwork for Jakarta Authorization 3.0 governance and security posture.

January 2025

8 Commits • 3 Features

Jan 1, 2025

January 2025 monthly summary for OpenLiberty/open-liberty focusing on business value, stability, and security enhancements. Delivered five key features/bug fixes that improve security posture, initialization correctness, packaging accuracy, platform alignment, and configuration stability.

December 2024

5 Commits • 2 Features

Dec 1, 2024

OpenLiberty/open-liberty — December 2024 monthly recap focused on business value and technical excellence: delivered Java version compatibility updates for Jakarta Authorization and SAAJ to support Java 24 while preserving Java 17/21 compatibility; enforced build hygiene by removing osgi.core from buildpath to prevent stale dependencies; expanded test coverage to validate PolicyContextHandlers across Jakarta EE versions and added versionless tests to support jakartaee-8.0 and javaee-8.0/MicroProfile compatibility; these efforts reduce runtime risk, improve modernization, and strengthen regression safety across the Jakarta/MicroProfile stack.

November 2024

6 Commits • 2 Features

Nov 1, 2024

OpenLiberty/open-liberty – 2024-11: Key features delivered around Jakarta EE compatibility and security architecture, runtime stability, and test/logging fidelity. This work reduces deployment risk, improves startup reliability, and enhances maintainability. Highlights include preparing for PrincipalMapper integration, improving test isolation for Jakarta EE fat tests, refining server dump timeouts, and restoring original test logging granularity.

October 2024

1 Commits • 1 Features

Oct 1, 2024

Monthly summary for 2024-10 (OpenLiberty/open-liberty): Delivered targeted security test enhancements for JAX-RS by implementing Security Context Handling Integration Tests. This included introducing a new resource class, updating test servlets to cover SecurityContext injection and custom wrapper scenarios, and validating user principal retrieval under custom security configurations. Commit a71177ffe95d68c11ad7681062fdaedb199a5236 was added to support a FAT test. Business value: improved security test coverage, reduced regression risk for JAX-RS security contexts, and stronger CI feedback. Technologies: Java, JAX-RS, OpenLiberty, integration testing, security context.

July 2020

1 Commits • 1 Features

Jul 1, 2020

July 2020 summary for OpenLiberty/open-liberty: Delivered a prioritized concurrent task scheduling feature using ConcurrentPriorityBlockingQueue. Updated ExecutorServiceImpl to use the new queue, enabling prioritized task handling and reducing synchronization overhead in high-concurrency scenarios. Commit: 625da1ed1fd52bb61891d0b3f0f901d4d6828fee. Added tests to verify correctness, robustness, and performance of the new queue. Business value: improved throughput and responsiveness under load, enabling higher-priority tasks to be serviced sooner without locking overhead.

June 2020

1 Commits • 1 Features

Jun 1, 2020

June 2020: OpenLiberty/open-liberty delivered ChannelSelector Concurrency Enhancement. Refactored concurrency handling to use read/write locks and concurrent queues, reducing lock contention and improving multi-threaded throughput for channel operations. This enhances scalability under high-concurrency workloads and improves overall responsiveness of the channel selection path. Commit: 21609ceef9ad885d58713acae6e9d2006c476bc0 (Update concurrency logic to remove lock contention).

Activity

Loading activity data...

Quality Metrics

Correctness88.6%
Maintainability87.4%
Architecture84.8%
Performance80.6%
AI Usage20.4%

Skills & Technologies

Programming Languages

BNDBatchGradleGroovyJavaMFShellXMLYAMLproperties

Technical Skills

API DesignAPI DevelopmentAPI DocumentationAPI IntegrationAPI ManagementAPI RefactoringAPI TestingAuthorizationBackend DevelopmentBuild AutomationBuild ConfigurationBuild ManagementBuild Script DevelopmentBuild Script ManagementBuild Scripting

Repositories Contributed To

2 repos

Overview of all repositories you've contributed to across your timeline

OpenLiberty/open-liberty

Jun 2020 Feb 2026
19 Months active

Languages Used

JavaMFBNDGradleYAMLXMLpropertiestext

Technical Skills

Javaconcurrent programmingmulti-threadingdata structuresmultithreadingIntegration Testing

jakartaee/platform-tck

May 2025 May 2025
1 Month active

Languages Used

Java

Technical Skills

API TestingJava Development