Category Archives: CDN

Amazon CloudFront 又增加東京機房了...

Posted on May 10, 2017 by Gea-Suan Lin

CloudFront 又增加東京的點了，這是第四個點：「Amazon CloudFront adds new Edge Locations in Tokyo, Japan and Dallas/Fort Worth, Texas」。 This is our fourth edge location in the Tokyo area and our third in Dallas, bringing the total number of CloudFront locations to 87 (including 76 … Continue reading →

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Cloudflare 推出 SSL 的 SaaS 服務

Posted on April 20, 2017 by Gea-Suan Lin

Cloudflare 把之前需要人力介入的操作，包成 API 直接提供給大家用：「Introducing SSL for SaaS」。 要解決的是「用戶自己的 domain 掛到我的服務上，而且需要 HTTPS」，而 Cloudflare 提供 API 把上面三部跑完，下面的就是 Cloudflare 自己處理 (包括取得用戶的同意)：

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EdgeCast 總算記得要推出 HTTP/2 了...

Posted on March 18, 2017 by Gea-Suan Lin

每次看到 EdgeCast 的業務都會抱怨一下，總算正式公佈了... EdgeCast 的 HTTP/2 預定在 2017/03/31 全面上線：「HTTP/2 Coming Soon to Our Customers with SSL Certificates!」。 由於是逐步上線，有些網站會在 3/31 前就生效 (像是 EdgeCast 的官網)： The rollout of HTTP/2 will be gradual, and you may start to see some of your content … Continue reading →

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分析現在還有多少不安全的 JavaScript Library 被使用

Posted on March 11, 2017 by Gea-Suan Lin

在「Thou shalt not depend on me: analysing the use of outdated JavaScript libraries on the web」這邊看到對 JavaScript Library 的研究。 jQuery 沒有什麼疑問的還是最大宗，查了一下應該是 CVE-2011-4969 的影響，對 jQuery 1.6、1.6.1、1.6.2 三個版本有影響。 另外也提到了 hosting 的部份，可以看到 Google Hosted Libraries 還是佔有最高的比率。

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Cloudbleed：Cloudflare 這次的安全問題

Posted on February 25, 2017 by Gea-Suan Lin

Cloudflare 把完整的時間軸與影響範圍都列出來了：「Incident report on memory leak caused by Cloudflare parser bug」。 出自於 2/18 時 Google 的 Tavis Ormandy 直接在 Twitter 上找 Cloudflare 的人： Could someone from cloudflare security urgently contact me. — Tavis Ormandy (@taviso) February 18, 2017 Google 的 … Continue reading →

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CloudFront 在慕尼黑加到第五個機房...

Posted on January 27, 2017 by Gea-Suan Lin

德國是歐洲區重要的交換中心，不過量大到可以讓 CloudFront 加到第五個點就頗意外的：「Announcing New Munich Edge Location for Amazon CloudFront, our 7th Edge Location in Germany」。 慕尼黑的第五個點，全德國第七個點： The Munich location is our third location in Germany (joining Frankfurt and Berlin), and our 7th edge location in Germany bringing the total … Continue reading →

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Cloudflare 因為閏秒炸掉...

Posted on January 2, 2017 by Gea-Suan Lin

Cloudflare 這次閏秒炸掉：「How and why the leap second affected Cloudflare DNS」，影響範圍包括了 DNS query 與 HTTP request： At peak approximately 0.2% of DNS queries to Cloudflare were affected and less than 1% of all HTTP requests to Cloudflare encountered an error. 主要的原因在於 … Continue reading →

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CloudFront 的 Regional Edge Caches

Posted on December 13, 2016 by Gea-Suan Lin

Amazon CloudFront 前陣子宣佈了 two-tier 架構：「Announcing Regional Edge Caches for Amazon CloudFront」。 一般的 CDN 是 edge 收到後就打到 origin，這會使得 origin 的量比較大。而 two-tier 架構則是在中間疊一層降低對 origin 的量。這種架構對於直播時的 pattern 幫助很大：由於量很大，會需要用大量的 edge server 支撐，而 edge server 一多就對 origin 產生巨大的壓力。 一般直播 95% 的 hitrate 表示外面 20Gbps 的流量就會造成 … Continue reading →

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Debian 的 CloudFront

Posted on December 12, 2016 by Gea-Suan Lin

剛剛看到 Debian Mirrors via CloudFront 這個，原來 AWS 幫忙付掉了： This service is kindly hosted by and paid for by Amazon Web Services, and we thank them for their contribution to Debian. 翻了 mailing list 發現是在 2013 年五月的時候弄出來的：「Debian archive distribution via CloudFront … Continue reading →

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