{
  "publisher": "FetchDL",
  "source_documents": [
    "docs/architecture/spotify_web_pipeline.md",
    "docs/architecture/youtube_web_streaming.md"
  ],
  "methodology": "/blog/how-fetchdl-benchmarks-are-measured",
  "competitor_speeds_measured": false,
  "observations": [
    {
      "test": "spotify_original_cold",
      "date": "2026-10-10",
      "scope": "metadata + retrieval + ZIP preparation; excludes browser transfer",
      "attempted": 89,
      "successful": 88,
      "elapsed_seconds": 124.813,
      "first_byte_seconds": null,
      "bytes": 628507341,
      "throughput_mib_per_second": null,
      "cache": "cold audio",
      "environment": "one-core ARM VPS"
    },
    {
      "test": "spotify_original_cached",
      "date": "2026-10-10",
      "scope": "new ZIP preparation; excludes browser transfer",
      "attempted": 89,
      "successful": 88,
      "elapsed_seconds": 8.1048,
      "first_byte_seconds": null,
      "bytes": 628507341,
      "throughput_mib_per_second": null,
      "cache": "cached audio",
      "environment": "one-core ARM VPS"
    },
    {
      "test": "youtube_public_sample",
      "date": "2026-10-10",
      "scope": "64 MiB public HTTPS sample after metadata preparation; not a full ten-hour browser stream",
      "attempted": 1,
      "successful": 1,
      "elapsed_seconds": 18.731,
      "first_byte_seconds": 0.274,
      "bytes": 67108864,
      "throughput_mib_per_second": 3.418,
      "cache": "stream metadata prepared",
      "environment": "one-core ARM VPS"
    }
  ]
}