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CDN compare: Azure vs Cloudfront vs BelugaCDN

It is a test of the speed from CDN Edge servers to the multi-locations. It is very important the signal for the real experience of the users.

Let me see how I implement the tests.

  • I created two endpoints on the Azure CDN, on Microsoft CDN and Akamai CDN.
  • I created a CloudFront distribution on Amazon CloudFront.
  • I created a CDN property on BelugaCDN.

All these four CDN settings pointed to a custom origin of one of my sites, which hosted on DigitalOcean.

The file I used for testing is a JPG file, an image file.

The testing tool is provided by KeyCDN performance tool.

I run at least two tests to make sure most of the testing server can get the JPG file from the cache of the Edge server(CDN), not back to the origin server.

 

Azure CDN: Standard Microsoft Tier

Standard Microsoft Tier CDN

 

The results are base on the 14 tests from different locations globally. I care about the TTFB much more than others.

What is TTFB

TTFB, which stands for time to first byte, is the amount of time it takes from when a client makes an HTTP request to it receiving its first byte of data from the web server. TTFB is an important aspect of website optimization since the faster the TTFB, the faster the requested resource can start being delivered to the browser.

The time to first byte is made up of three separate components.

  • The time needed to send the HTTP request
  • The time needed for the server to process the request
  • The time needed for the server to send back the first byte of the response to the client

What is a good TTFB?

The time to first byte can vary greatly depending on what sort of content you are serving (static vs dynamic), your server’s configuration, etc. Therefore determining what is a good TTFB number is difficult to answer and is variable based on your situation. However, on average anything with a TTFB under 100 ms is fantastic. Anything between 200-500 ms is standard, between 500 ms – 1 s is less than ideal and anything greater than 1 s should likely be investigated further.

As mentioned, it should be noted that these times are average benchmarks, however do not apply to all websites. Depending on the type of content and complexity of the application it may be completely unavoidable that the TTFB is greater than 1 second

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What is exFAT

Saw a new type of disk format, exFAT. I am only knowing FAT, FAT32, NTFS, and some others for Linux operation system.

Today, when I try to format a microSD card, it has a new option, exFAT.

exfat-format

What is exFAT?

 

File size limit is now 16 exabytes.
Format size limits and files per directory limits are practically eliminated.
Like HPFS, exFAT uses free space bitmaps to reduce fragmentation and free space allocation/detection issues.
Like HTFS, permission systems should be able to be attached through an access control list (ACL). It is unclear if or when Vista will include this feature, however.

Interestingly enough, exFAT is not used and was not designed for formatting hard drives. It is only recommended in flash memory storage and other external devices only. This is why it is currently not considered a huge competitor to NTFS on hard drives.

 

For me, I know that flash drive capacity is getting bigger and bigger. And also the file size, I mean the video file size is also getting bigger and bigger.

FAT32 has a limitation of 4GB file size limit.

NTFS and exFAt can store a single file with 5Gb or evern more.

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Microsoft extend the partial support for Windows XP

It is almost the end of life of Windows XP. vi

Microsoft has announced the Windows XP end of support date of April 8, 2014. After this date, Windows XP will no longer be a supported operating system*. To help organizations complete their migrations, Microsoft will continue to provide updates to our antimalware signatures and engine for Windows XP users through July 14, 2015.

 

Microsoft anti-malware support for Windows XP.

 

Windows Updates 2012-09

Microsoft Security monthly updates released today.

One critical update

  • Cumulative Security Update for Internet Explorer (2744842)

Two important updates

  • MS12-061 Vulnerability in Visual Studio Team Foundation Server Could Allow Elevation of Privilege (2719584)
  • MS12-062 Vulnerability in System Center Configuration Manager Could Allow Elevation of Privilege (2741528)

windows7_update_201209

vi MSBS

Microsoft Security Essentials released

Right now, Microsoft released its free security program, Microsoft Security Essential. It can not work on Windows 2000.
Operating System Requirement: Genuine Windows XP (Service Pack 2 or Service Pack 3); Windows Vista (Gold, Service Pack 1, or Service Pack 2); Windows 7
Let’s see what he said about it:
Microsoft Security Essentials provides real-time protection for your home PC that guards against viruses, spyware, and other malicious software.
I am not very sure how good it is. You would better try it yourself and leave your comment to tell others how it works.
You can get it free here.

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