Mirror Eric's OC PQG to R2 with immutable cache + drift-check script#132
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rdhyee merged 1 commit intoisamplesorg:mainfrom Apr 17, 2026
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Eric Kansa's OpenContext PQG files (the ones with 48K populated thumbnails, see isamplesorg#131) were only served from his GCS bucket. Mirrored to R2 under oc_pqg/ with date-versioned filenames + per-file manifests + a latest.json pointer so we: 1. Have a stable source-of-truth input for the PQG pipeline rebuild. 2. Can detect drift when Eric re-uploads. 3. Get free Cloudflare edge caching via the existing Worker. Worker change: expand the immutable Cache-Control regex from a single isamples_YYYYMM_* pattern to an array that also covers oc_pqg/oc_isamples_pqg*_YYYYMMDD.parquet. Non-versioned files under oc_pqg/ (manifests, latest.json) fall through to the 5-minute default. scripts/check_oc_pqg_drift.py fetches latest.json + per-file manifests from R2, HEADs GCS, and compares etags. Exit 0 = in sync, 1 = drift, 2 = probe failure. Run manually for now; later wire to GitHub Actions cron. Mirror contents (2026-04-17): oc_pqg/oc_isamples_pqg_20251107.parquet (727 MB, narrow) oc_pqg/oc_isamples_pqg_wide_20251116.parquet (289 MB, wide) oc_pqg/*.manifest.json (per-file provenance) oc_pqg/latest.json (flavor -> current version) Verified live: cache-control on the parquets is public, max-age=31536000, immutable. Drift check passes. Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
This was referenced Apr 17, 2026
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Addresses the mirror-planning part of #131. Files uploaded to R2, Worker regex expanded, drift-check script landed.
Mirror verified live —
curl -sI data.isamples.org/oc_pqg/oc_isamples_pqg_20251107.parquetshowscache-control: public, max-age=31536000, immutable. Drift check exits 0 (in sync).