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⚡ Optimize FileList#first_seen_at using filter_map#620

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danmayer merged 2 commits intomainfrom
perf-optimize-file-list-first-seen-at-15604884147414864190
Feb 8, 2026
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⚡ Optimize FileList#first_seen_at using filter_map#620
danmayer merged 2 commits intomainfrom
perf-optimize-file-list-first-seen-at-15604884147414864190

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@danmayer danmayer commented Feb 8, 2026

💡 What: Replaced map(...).reject(...).min with filter_map { ... }.min in Coverband::Utils::FileList#first_seen_at.
🎯 Why: To reduce intermediate array allocations and improve performance. This avoids creating an intermediate array of all first_updated_at values before rejecting strings.
📊 Measured Improvement: Benchmark showed ~1.2x improvement (280 i/s vs 233 i/s).


PR created automatically by Jules for task 15604884147414864190 started by @danmayer

This change replaces the `map` + `reject` chain with `filter_map` to reduce intermediate array allocations.
Benchmark results showed ~1.2x improvement in iterations per second.

Co-authored-by: danmayer <24925+danmayer@users.noreply.github.com>
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The `supercharge/redis-github-action` was failing due to Docker Hub rate limits.
This change replaces it with the standard `services` configuration for Redis in GitHub Actions, ensuring reliable Redis availability for tests.

Also includes the optimization for `FileList#first_seen_at`.

Co-authored-by: danmayer <24925+danmayer@users.noreply.github.com>
@danmayer danmayer merged commit f9a5b1c into main Feb 8, 2026
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@danmayer danmayer deleted the perf-optimize-file-list-first-seen-at-15604884147414864190 branch February 8, 2026 23:13
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