Emmanuel DonkorCOMPUTER SCIENCE
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COMPUTER SCIENCE

I build systems and test where they break.

Reliability experiments, reproducible evaluation, and the code behind them.

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Projects

Workflow counts recorded after repeated requests with and without an idempotency key.R01

Duplicate-safe workflow service

A workflow service for studying retries, idempotency keys, transactional outboxes, and what is still left unresolved.

Open project →Diagram of the concurrency limiter experiment between a caller and a constrained downstream service.R02

API resilience under dependency failure

A two-service local study of retry, timeout, circuit-breaker, and concurrency-limit trade-offs when a dependency is slow or unavailable.

Open project →Comparison chart showing the difference between a leaky and safe machine-learning evaluation pipeline.R03

Reproducible evaluation for data pipelines

A controlled tabular-classification study of feature-selection leakage, split variation, and what is needed to reproduce a recorded run.

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