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Dominik Riemer

PROFILE

Dominik Riemer

Dominik Riemer contributed to the apache/streampipes repository by engineering robust data integration, visualization, and governance features across the stack. He developed modular UI components and dashboards using Angular and TypeScript, modernized authentication with OAuth2 and certificate management, and enhanced backend reliability with Java and Spring Boot. His work included building configurable adapters, implementing secure access controls, and optimizing data pipelines for real-time analytics. Dominik refactored APIs for maintainability, improved CI/CD automation, and introduced internationalization for broader accessibility. The depth of his contributions is reflected in end-to-end solutions that improved system resilience, user experience, and long-term platform scalability.

Overall Statistics

Feature vs Bugs

74%Features

Repository Contributions

175Total
Bugs
27
Commits
175
Features
78
Lines of code
209,591
Activity Months18

Work History

March 2026

17 Commits • 7 Features

Mar 1, 2026

March 2026 performance highlights for apache/streampipes: Focused on delivering data visibility, improved UX, secure access, and resilient core integrations, while strengthening internal stability and CI/CD. Key outcomes include a data preview table for structured data viewing, enhanced UI widgets and dashboards, refresh-token based authentication and session persistence, expanded data flow with Camel Kamelets and Azure/NATS integrations, and comprehensive internal stability work (REST refactor, verification logic improvements, and CI/CD hygiene). These changes collectively increase data exploration capabilities, dashboard efficiency, security posture, and system reliability, enabling faster time-to-value for users and smoother developer experience.

February 2026

14 Commits • 5 Features

Feb 1, 2026

February 2026 monthly summary for apache/streampipes focused on delivering a modernized platform stack, enhanced user experience, and stronger data ingestion reliability, while simplifying authentication flows and strengthening core architecture for maintainability and future scalability. Business value delivered includes faster iteration cycles, improved data exploration capabilities, and more robust integration of OPC-UA data streams.

January 2026

8 Commits • 5 Features

Jan 1, 2026

January 2026: Delivered UX and API enhancements across asset management, dataset access control, reliability, transformation, and file processing. Strengthened user productivity through asset sorting and translations; improved data governance with dataset permissions and name-based retrieval; boosted platform resilience via health-check refinements; expanded transformation API with output collectors and context support; and clarified file processing flows with stop/cancel controls and translation updates.

December 2025

18 Commits • 5 Features

Dec 1, 2025

December 2025 (apache/streampipes) delivered substantial business-value features and reliability improvements across data simulation, dashboards, datasets, assets, and UI/UX. Key outcomes include enhanced data realism with multi-sensor simulation and vector mapping, improved startup mapping initialization, and stronger widget/dataset/asset management workflows. A cohesive UI/system-wide polish supports faster onboarding, consistent design, and scalable growth.

November 2025

25 Commits • 7 Features

Nov 1, 2025

November 2025 development summary for apache/streampipes focusing on security, UX, and maintainability across the codebase. Delivered permissions and UI enhancements, improved configurability, and fixed critical access and event handling issues. Strengthened data access controls, simplified navigation, and prepared the ground for easier future changes with layout and code quality improvements.

October 2025

11 Commits • 6 Features

Oct 1, 2025

In Oct 2025, delivered key features across apache/streampipes to enhance governance, usability, localization, and security, while stabilizing live data UX. The work improves admin visibility, accelerates dashboard operations, and strengthens deployment flexibility, with a focus on business value and long-term maintainability.

September 2025

4 Commits • 2 Features

Sep 1, 2025

During September 2025, the Streampipes project delivered two major outcomes for apache/streampipes: (1) secure anonymous read access to kiosk data when the dashboard is in anonymous mode, with permission checks to prevent unauthorized access; (2) a Material Design 3 design system upgrade plus UI polishing to modernize theming and improve layout consistency across components. In addition, targeted UI refinements were completed to improve the adapter overview layout and fix a minor layout issue in the Exception dialog. These changes enhance data accessibility with proper security controls, deliver a cohesive and modern user experience, and establish a foundation for faster, consistent UI work across the platform.

August 2025

16 Commits • 6 Features

Aug 1, 2025

August 2025 highlights for apache/streampipes: Delivered a broad set of platform enhancements with a focus on business value, security, observability, and release reliability. Key outcomes include richer dashboards, improved asset management UX, modernized authentication/authorization, centralized OPC-UA certificate management, enhanced data exploration/observability, and stabilized CI/CD pipelines.

July 2025

3 Commits • 1 Features

Jul 1, 2025

July 2025 monthly summary for apache/streampipes: Delivered targeted reliability and CI/CD improvements with three primary work items, focusing on data reliability, system stability, and CI/CD modernization. Key features/bugs delivered included fixes to data download timestamp extraction, stabilizing OPC-UA disconnect handling, and upgrading CI/CD Node.js version to 22.x. These changes improved data retrieval reliability, prevented resource leaks, and enabled runtime/performance improvements in CI pipelines. Overall impact: increased data reliability, system stability, and faster feedback cycles; reduced risk of runtime errors and improved performance. Technologies/skills demonstrated: Node.js upgrade, robust error handling, resource management, CI/CD automation, pipeline modernization, and proactive incident prevention.

June 2025

5 Commits • 3 Features

Jun 1, 2025

2025-06 monthly summary for apache/streampipes: Delivered key API and reliability improvements across adapters, data exploration, and translations. Focused on business value through automation readiness, user accessibility, and pipeline resilience.

May 2025

9 Commits • 7 Features

May 1, 2025

In May 2025, delivered a targeted set of features and reliability improvements for the apache/streampipes repository, focusing on UI usability, data integration robustness, platform modernization, and deployment hygiene. Key outcomes include a modular UI refactor for adapters, OPC-UA extension object support and robustness improvements, configurable REST sink with enhanced logging and retry capabilities, reactive site configuration forms with validation to ensure data integrity, and a platform upgrade to Angular v19 with Federation removal. These changes collectively improve maintainability, integration flexibility, build stability, and end-user data reliability.

April 2025

4 Commits • 2 Features

Apr 1, 2025

Monthly summary for 2025-04 focused on delivering configurable improvements and data governance features for the apache/streampipes project, with a emphasis on reliability, correctness, and measurable business value. 1) Key features delivered - Configurable PLC Connector Timings and Scheduler Improvements - Add environment variables to configure PLC connector wait and lease times; update PullAdapterScheduler to use fixed-delay scheduling; implement robust shutdown. - Business value: increased resilience and operational flexibility in PLC integrations; smoother shutdowns reduce downtime risk. - Notable commit: 4023061a695cff835e93484c323f56a8152672f9 - Resource Metadata and Dashboard Timestamps - Introduced ResourceMetadata with createdAtEpochMs and lastModifiedEpochMs; integrated into DashboardEntity and DashboardModel; UI displays timestamps; fix lastModifiedEpochMs handling for dashboard persistence. - Business value: improved data provenance, auditing, and UI accuracy for dashboards. - Notable commits: 52b4ebbabbe02cc7a1eccd7a52d98badde4bbfdc; 87bd428b8107d698aaa9085c5c55e220fb5350eb 2) Major bugs fixed - Data Export Accuracy (Explicit Item Selection) - Ensure export package includes only explicitly selected items; skip non-selected files/documents to prevent unintended data export. - Business value: strengthens data governance and privacy; reduces risk of exporting unnecessary data. - Notable commit: c29b50eaa89c29e8fa4a980f01d0029650432d65 3) Overall impact and accomplishments - Improved configurability and reliability of PLC integrations, reducing operational risk and enabling safer production deployments. - Enhanced data governance and auditability through accurate metadata and timestamps in dashboards. - Corrected export semantics to prevent unintended data exposure, aligning with privacy/compliance requirements. 4) Technologies/skills demonstrated - Environment variable-based configuration, fixed-delay scheduling, and robust shutdown patterns. - Data modeling and API/UI integration for metadata and timestamps (ResourceMetadata, createdAtEpochMs, lastModifiedEpochMs). - Data export filtering and correctness, end-to-end traceability via commit history. - Strong attention to data accuracy, auditing, and compliance through engineering work.

March 2025

12 Commits • 5 Features

Mar 1, 2025

March 2025 (apache/streampipes) monthly summary highlighting delivered capabilities, stability improvements, and business value across data lake, asset management, visualization, and backend infrastructure. Focused on delivering concrete features, reducing operational risk, and enabling faster data-driven decisions through improved analytics, asset lifecycle handling, and more robust APIs and tests. Key achievements: - Data Lake enhancements: paging improvements, persistence of asset filters across pipeline/adapter modifications, and new analytics functions (MEDIAN, SPREAD, STDDEV) in the data explorer. Commits: 35697b07d753d435850c85d8a1687e48108cc4ab; 71cb94f03ef076649a15e32a913459580228f72d. - Asset export/import extensions: extended asset export to support generic storage documents, enabling proper handling during import/export and improved data management. Commit: 13f57c1bfecac52f9d6f9b339a193d3cb6f32bc7. - Asset tree refresh: fixed asset tree updating by resetting and repopulating the data source after adding new assets to reflect the latest hierarchy. Commit: d75f190575e17480ba14944c67b1e4c07a2f5b41. - Visualization enhancements: added configuration for heatmap legend visibility and addressed map visualization issues (marker icon path, tooltip generation). Commits: 3af150d4ab1f63b48b798e2260aa8aaace65b85b; a98de6bdd18a077e65b5404e2de1486cc755e4ca. - Backend/infrastructure, API enhancements, and testing improvements: enabling GitHub discussions, updating ASF keywords, extending generic storage API, deployment broker configuration for NATS where applicable, and improvements to Cypress test stability. Commits: abcefa2428bae95c889e3ea49e77bf62d108111f; 6fd49d04b8287f92161f2196923c8245728cc280; a5976655cf243b8115b5248af75bb553eaa27ae0; 43573850423475a429f517db6502fbe30d1a25b8; 60bdb97f8760009ef94eeed5f7e49913fcfff0f4.

February 2025

11 Commits • 8 Features

Feb 1, 2025

February 2025 — Apache Streampipes monthly summary: Delivered targeted feature enhancements, platform upgrades, and reliability improvements that improve data correctness, user experience, and developer productivity. Highlights include: StaticMetadataEnricher enhancements with v2 migration and UI layout improvements (commits 034137059d2f60beb3086bee9c6a2f46505ccb6d); Frontend upgrade to Angular v18 with linting fixes and updated UI components (commit 0b99270f071171d8c164f0815c33ac618643a15a); UI cleanup and dependency simplification (commits f26aaa45dae356b78dabc302d2f190efdf74fabc, 9f593388db43b0a6cd61391961416a1c16b50641); Multi-language UI support via ngx-translate with German translations and auto-translate groundwork (commit 915fd079350712507c71c87e1f7295b905cb16c2); Kafka-based internal messaging with Zookeeper removal and Kraft-based configuration (commit 18dfc84b815959bcd39c0e9ae2ec516591a2f32d); Test reliability and workflows improvements (commits b983f67ff30359087fcf415d0319b0211ff4a6e5; da356d68c525bcaf56dd883a8ce6fda2f5d7b581; a731c895611080344bd66dda27d1c9a77fea59ca); Backend stability and observability enhancements via Spring Boot upgrades and Prometheus endpoint access configuration (commit 6d9a694dcb2701cc481a318a8db21b9e2e007e42); Routine license maintenance: update NOTICE year to 2025 (commit c275ab2ffb71d5fb125f99e2e2b63af9ed0cd5c2). In addition, a small correctness fix was applied to the InfluxDB query executor to ensure correct data series sizing.

January 2025

7 Commits • 2 Features

Jan 1, 2025

January 2025: Delivered UI overhaul with chart-based data views and a consolidated dashboard module; added Excel export capability; fixed upgrade migration: 0.95.0→0.97.0; improved Kafka groupId handling and restart-time configuration; fixed storage of transformation rules and expanded tests; reinforced security-related JWT settings and restart directories.

December 2024

6 Commits • 4 Features

Dec 1, 2024

December 2024 performance snapshot for apache/streampipes. This month focused on security hardening, reliability improvements, and upgrade-path enhancements across core data integrations, with measurable business impact through safer deployments, better resource utilization, and more predictable operations. Highlights include OPC-UA security enhancements, Kafka connector configurability with migration support, InfluxDB connection pool optimization, and UI/test reliability improvements.

November 2024

3 Commits • 2 Features

Nov 1, 2024

Month: 2024-11. Focused on delivering business-value through UI stability, modular component design, and robust validation. Key work on apache/streampipes with three changes: Enhanced Time Selection Component, Pipeline Element Validation for Collections Bugfix, and PLC Connector Configuration UI Layout Improvement. All changes include commit-level traceability and improved user experience with reduced errors and clearer configuration flows.

October 2024

2 Commits • 1 Features

Oct 1, 2024

October 2024 performance focused on stabilizing templates lifecycle and expanding pipeline output capabilities in apache/streampipes. Key accomplishments include implementing Pipeline Output Strategies via a Visitor Pattern to enable flexible data routing and updating the data model; and resolving critical template lifecycle bugs by ensuring proper deletion of pipeline templates from the canvas and correct initialization of rawPipelineModel when loading templates, removing related data and endpoints before reset. This work improves reliability of templates management, enables flexible data output configurations, and lays groundwork for more advanced pipeline customization.

Activity

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Quality Metrics

Correctness88.0%
Maintainability85.2%
Architecture84.2%
Performance79.6%
AI Usage24.4%

Skills & Technologies

Programming Languages

CSSHTMLJSONJavaJavaScriptMarkdownPythonSCSSTypeScriptXML

Technical Skills

CypressAPI DesignAPI DevelopmentAPI IntegrationAPI RefactoringAPI designAPI developmentAPI integrationAccess ControlAdapter ManagementAngularApache CamelAuthenticationBackend DevelopmentBuild Automation

Repositories Contributed To

1 repo

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

apache/streampipes

Oct 2024 Mar 2026
18 Months active

Languages Used

HTMLJavaTypeScriptSCSSJavaScriptCSSJSONYAML

Technical Skills

API DesignAngularBackend DevelopmentFront End DevelopmentModel Driven EngineeringComponent Refactoring