Web における Beacon の変遷 (sendBeacon(), fetch() keepalive, fetchLater())
Read Originalこの記事は、Webページが閉じられる際にサーバーへデータを確実に送信する「Beacon」技術の進化について詳しく解説しています。imgタグ、同期XHRから始まり、navigator.sendBeacon()、fetch()のkeepaliveオプション、そして最新のfetchLater()提案に至るまでの各APIの策定経緯、挙動の違い、利点と制約を技術的に深掘りします。
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