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Architecture note for adding Codecov’s bash uploader to CI pipelines: requirements, minimal design, trust boundaries, operational checks, and failure‑driven evolution.
Goal: select an upload method that avoids HTTP connection pool exhaustion when many CI jobs run in parallel. Constraint: the Bash uploader relies on curl’s default connection reuse, which can exhaust the local pool under high concurrency, while the Docker‑based uploader isolates its own HTTP client but adds container startup overhead. The Codecov documentati
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