Dropbox 將本來的 SPDY 切換到 HTTP/2 後整理了不少資料：「Enabling HTTP/2 for Dropbox web services: experiences and observations」。
大多數都是效能的改善，但「Increased latency for POST requests.」這段頗有趣的，找出了 nginx 的 bug：
POST 的 latency 大約增加了 50%，而實際追蹤問題發現是 nginx 中 SETTINGS_INITIAL_WINDOW_SIZE 預設值的問題，然後提出 patch 改善：「[nginx] HTTP/2: rewritten handling of request body.」：
There is a small issue with setting `SETTINGS_INITIAL_WINDOW_SIZE` to 0: now when client tries to POST data it needs to wait for an additional RTT(between `send HEADERS` and `recv WINDOW_UPDATE`) to start sending data.