DAMPAK EDGE CACHING TERHADAP RELIABILITAS PROTOKOL PENGIRIMAN AUDIO UNTUK ASSESSMENT ONLINE BERSKALA KECIL
Abstract
Penelitian ini menginvestigasi dampak edge caching terhadap reliabilitas pengiriman audio assessment online berskala kecil melalui perbandingan empat konfigurasi: Direct No-CDN, Direct CDN, HLS No-CDN, dan HLS CDN. Konteks ini mengevaluasi audio prerecorded berdurasi pendek (3–13 detik) pada jaringan mobile Indonesia dengan 235 pengguna riil menggunakan desain within-subjects dan analisis sensitivitas threshold Acceptable Delay (0 ms, 500 ms, 3000 ms). Hasil Cochran's Q menunjukkan efek signifikan konfigurasi terhadap reliabilitas (Q = 265,88, p < 0,001). CDN mengurangi tingkat gagal AD dari ~75–82% menjadi ~14–21% secara independen dari protokol. Uji Mann-Whitney U mengkonfirmasi tidak terdapat perbedaan signifikan pada median gagal AD antara Direct CDN dan HLS CDN pada threshold 500 ms (p = 0,706, median keduanya 0%). Temuan ini menyanggah stereotip bahwa HLS kurang cocok untuk konten berdurasi pendek dan mengidentifikasi edge caching sebagai determinan utama reliabilitas, menggeser prioritas dari pilihan protokol ke implementasi CDN.
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