Dimitar Kostadinov
Software Developer at SAP Labs
Bulgaria
Summary
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RockstarDimitar Kostadinov is a software developer with seven years of experience, currently working at SAP Labs in Bulgaria. He focuses on backend systems and has hands-on experience improving observability and reliability in container distribution tooling. His open-source contributions include adding Prometheus metrics and robust shutdown behavior to the widely used distribution/distribution project, highlighting attention to production telemetry and graceful shutdown. Colleagues would describe him as pragmatic and detail-oriented, tackling both feature implementation and post-review fixes to ensure correctness. He brings a practical understanding of metrics-driven diagnostics that helps teams measure and troubleshoot proxy performance in production.
6 years of coding experience
Github Skills (9)
container10
go10
prometheus10
distributions9
metric9
occi8
cnc7
docker6
dockers6
Programming languages (5)
Github contributions (5)
distribution/distribution
Sep 2023 - May 2024
The toolkit to pack, ship, store, and deliver container content
Role in this project:
Back-end Developer
Back-end DeveloperContributions:2 reviews, 5 PRs, 3 comments in 8 months
Contributions summary:Dimitar primarily contributed to the implementation of proxy metrics within the distribution/distribution repository. Their work involved adding Prometheus metrics for tracking proxy request performance, including hits, misses, and byte counts for both blobs and manifests. They also addressed review feedback and fixed issues related to proxy statistics, ensuring correct metric reporting, and initialized prometheus counters. Furthermore, the user implemented the shutdown of the proxy scheduler on system exit.
containersshipdockerdelivercncf
dimitar-kostadinov/gardener-extension-registry-cache
Jan 2023 - Apr 2025
Gardener extension controller which deploys pull-through caches for container registries.
Contributions:120 pushes, 72 branches in 2 years 3 months
controllerregistriesdockergardenerkubernetes
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