裡面分析了多久沒有 request 會需要冷啟動、記憶體的大小對於冷啟動速度的影響、程式語言的影響，以及程式大小的影響。
對於量很少，但是又很在意速度的人來說也許可以研究一下。不過只要有點量 (就算一分鐘只有一次) 應該都不會遇到這塊問題...
在朋友的 tweet 裡看到微軟啟用自己的 Azure CDN 了，先前應該是提供 Akamai 與 EdgeCast 的服務：「Announcing Microsoft's own Content Delivery Network」。
看圖似乎是有台灣的點，不過我找不到可以測試 traceroute 的 endpoint，頁面上用的圖還是 EdgeCast 的啊 XDDD
;; ANSWER SECTION: azurecomcdn.azureedge.net. 1604 IN CNAME azurecomcdn.ec.azureedge.net. azurecomcdn.ec.azureedge.net. 3404 IN CNAME cs9.wpc.v0cdn.net. cs9.wpc.v0cdn.net. 3404 IN A 126.96.36.199
Azure Content Delivery Network Standard from Verizon (S1) and Akamai (S2) and Microsoft (S3)*
*S3 is currently in public preview. CDN rates will be 50% of the stated price during this period.
文章裡比較了十家 VPS 或是可以當作 VPS 的雲服務商，先直接講重點，看起來他最後選了 Vultr：
A serious competitor to Digital Ocean. I would use this.
不過 Vultr 有個讓人不太舒服的地方 (對我而言) 是登入機制沒有 2FA，所以只能透過 Password Manager 用強密碼保護。不過除此之外都還算不錯。
This one was painful. Yes, I have a bit of a Microsoft aversion, but I tried to keep an open mind. Read the full description of my Azure adventure. Expensive, apparently no IPv6, slow disk IO, and I couldn't figure out block storage options. Definitely not for me.
然後在測試 Azure 時的評語就更酸了：
Oh Azure! This one is going to get a bit ranty. I Spent a good 20 minutes clicking around the provisioning Web UI. To be fair, it is more geared to people needing to provision a lot of servers. Doing a single one like this is not the target audience as far as I can tell. But still, instead of presenting a couple of standard options and a way to build your own custom config, Azure gives you 92 options (depending on which region you select):
I also got super lost trying to figure out what it would cost to bring the VPS up to 500 GB of persistent storage. And then to make things even more confusing, when I started the virtual machine creation process and came to the "Choose your virtual machine size" step, I got a bunch of different options not included in the above list with most of them listed as "Not Available" including both the A4 v2 and F4 options I had so carefully located.
然後還有奇怪的 agent 在跑：
The Azure VPS also had the heaviest provisioning agent of all the ones I tested. It looks like it is doing a heartbeat once per second and doing a (non-ssl) GET request to an IIS server upstream asking it for a "GoalState". I listened and checked what the IIS server responded with. The response from the management server is in the GoalState addendum below. It is mostly self-explanatory, I think.
相較於其他家 VPS 的評測，這部份的長度與酸度都頗不賴的 XDDD
The majority of the investments we make at the kernel level to enable network and storage performance were up-streamed into the FreeBSD 10.3 release, so anyone who downloads a FreeBSD 10.3 image from the FreeBSD Foundation will get those investments from Microsoft built in to the OS.
像是 10Gbps 網路這部份就有明顯的改善：
For example, our measured networking throughput on a 10Gb network on FreeBSD 10.1 was 2Gbps. With 10.3, we’ve been able to achieve over 9Gbps in testing
所以 Microsoft Azure 現在提供三個不同的 CDN 方案：
在「How much bigger is Amazon’s cloud vs. Microsoft and Google?」這篇文章裡用營收來估算...
But, a new report from New Hampshire-based firm Technology Business Research estimates Amazon’s cloud revenue at more than $4.7 billion this year. TBR pegs Microsoft’s public cloud IaaS revenue at $156 million and Google’s at $66 million. If those estimates are correct than Amazon’s cloud revenue is 30 times bigger than Microsoft’s.
如果用估算的營收來比較，與第二大的 Microsoft 相差 30 倍，超級大的差距...
在管理介面時會被提醒需要安裝 Sliverlight。沒有 Silverlight 的只能使用基本介面，同時也在登入時說明 2011 年初會把舊介面關閉：
能看的文件不多，而且要在登入後才能看 Help and Resources (這是 non-Silverlight 版本)
抓了 VSCloudServiceHelp.chm 後，打開來發現只有標題能看，每個章節都看不到內容：
自九月開始，微軟的 Windows Azure CDN 增加了兩個 PoP：「20 Nodes Available Globally for the Windows Azure CDN」，參考文章最後的「UPDATE - 9/1/10」部份。