CloudFlare 推出了 HTTP/2 服務,與其他 CDN 業者不一樣的地方在於,他可以同時接受 HTTP/2 與 SPDY:「HTTP/2 is here! Goodbye SPDY? Not quite yet」。
CloudFlare 拿自家的 www.cloudflare.com
官網測試,顯示 HTTP/2 的效能比 SPDY 又好了不少:
Access via HTTP Protocol Version |
Average Page Load time |
HTTP 1.x |
9.07 sec. |
SPDY/3.1 |
7.06 sec. |
HTTP/2 |
4.27 sec. |
在正式上 HTTP/2 前,有 80.38% 對 www.cloudflare.com
的 SSL/TLS 連線是 SPDY:
During the week before our HTTP/2 launch, 80.38% of all SSL/TLS connections to our own website at www.cloudflare.com were made over SPDY/3.1.
上線後其實沒有想像中的高:
Protocol Version |
Percentage of Hits |
HTTP 1.x |
19.36% |
SPDY/3.1 |
57.02% |
HTTP/2 |
23.62% |
這也說明了為什麼 CloudFlare 要推出 SPDY + HTTP/2 的服務:
Why choose, if you can have both? Today CloudFlare is introducing HTTP/2 support for all customers using SSL/TLS connections, while still supporting SPDY. There is no need to make a decision between SPDY or HTTP/2. Both are automatically there for you and your customers.
剛剛連到後台確認,由於本來已經打開 SPDY 的使用者會自動開啟 HTTP/2,這表示全球 HTTP/2 的使用率會馬上拉高很多,有太多資源掛在 CloudFlare 上:(像是 cdnjs.com,剛剛確認也已經是 HTTP/2 了)
If you are a customer on the Free or Pro plan, there is no need to do anything at all. Both SPDY and HTTP/2 are already enabled for you.
Customers on Business and Enterprise plans can enable HTTP/2 within the "Network" application of the CloudFlare Dashboard.