ApplyDjinn digest · AI assisted
Origin Range Requests: Serving large files without range-request tuning
Overview
Cloudflare released Origin Range Requests, a self-service feature on all plans for caching partial file fetches without tuning a range size. It replaces older fixed slices that could pull much more origin data than clients requested. On R2, responses got faster and tiered cache traffic declined after the switch.
Key facts
- Enable it with a Cache Rule in the dashboard or API; a support contact is unnecessary.
- R2 previously used a 64 MiB range, so a boundary-crossing read could move 128 MiB between data centers.
- Satisfiable ranges return 206 Partial Content; cases that cannot safely be ranged are served in full.
Key figures
- 128 MiB — Origin and inter-data-center transfer a small old-style range read could trigger.
- 64 MiB — R2 configured range size before the new cache implementation.
- about half — Drop in R2 p99 time to first byte on both cache hits and misses.
- about 6% — Week-over-week fall in tiered cache traffic for R2 and similar workloads.
- petabytes — Scale of daily data no longer moving between data centers after the cut.
Context
Available today on all plans; customers choose matching traffic and the edge coordinates ranges.
What remains uncertain
Earlier nginx range caching could not combine with concurrent streaming without cutting responses short.
A concise AI-assisted digest of selected facts. The original publication may contain additional detail and later updates. Company data below is a separate ApplyDjinn observation.
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