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performance on a mobile deviceBecause of the unpredictable nature of mobile devices, it is important to test performance on multiple devices. Here are some free performance testing tools: Mobitest,akamai: You can generate waterfall and har files for IOS 5.0,iphone 3 G and Nexus S on IPhone 4. Note The Nexus S test results are inconsistent with our own internal tests. Our server access logs show when we test the actual Android 2. The x devic

http post parameters to change the cache items. For example, you only need to set VaryByParam = "Report" to set the default. aspx? Report = 1 or default. aspx? Report = 2. You can specify other parameters by specifying a list separated by semicolons. Many people do not know when to use the output cache. The ASP. NET page will also generate some HTTP headers located below the cache Server, such as the headers used by Microsoft Internet Security and Acceleration Server or

attribute just mentioned. VaryByParams is requested, but you can also specify http get or http post parameters to change the cache items. For example, you only need to set VaryByParam = "Report" to set the default. aspx? Report = 1 or default. aspx? Report = 2. You can specify other parameters by specifying a list separated by semicolons.Many people do not know when to use the output cache. The ASP. NET page will also generate some HTTP headers located below the cache Server, such as the header

) http://blog.erratasec.com/2014/09/bash-shellshock-bug-is-wormable.html#.VD5bymSUeE1 (29) http://resources.infosecinstitute.com/bash-bug-cve-2014-6271-critical-vulnerability-scaring-internet/ Http://unix.stackexchange.com/questions/157329/what-does-env-x-command-bash-do-and-why-is-it-insecure 31) http://askubuntu.com/questions/529511/explanation-of-the-command-to-check-shellshock 32) http://digg.com/video/the-shellshock-bug-explained-in-about-four-minutes Http://www.symantec.com/connect/bl

technologies, and fiber-to-household. Akamai publishes a global bandwidth report every quarter With the Tracerouter tool, you can view the routing topology, and the last kilometer delay has a significant relationship with the provider, deployment method, network topology, and even the time of day. As an end user, if you want to improve your internet speed, it is critical that you choose the shortest latency ISP. ? 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

cache", the gateway cache is also acting as a proxy role, through the network administrator (or webmaster himself), can make the bandwidth more efficient use, so that their website becomes more reliable.Content Delivery Networks(CDNs) to sell their cache service. Speedera and Akamai are very famous CDNs.What is the impact of caching on your site? How do I use caching correctly?Site cache is often misunderstood, owners think proxy cache can be "hidden

answer is "Facebook content distribution Network". Facebook uses content distribution networks (CDNs) to distribute static files like images, CSS tables, and JavaScript files. As a result, these files will be backed up in many CDN data centers around the world.Static content often represents the bandwidth size of the site and can be easily replicated through a CDN. A third-party CDN is usually used by the website. For example, Facebook's static files are hosted by

Facebook is now reading more than 10 times times faster than standard mobile web articles. Yes, it's 0.8 seconds, honestly, no one knows how Facebook did it, and it's really impressive.Facebook has full control over what is presented to the user. Without instant articles, users clicked an article on the New York Times web site, most likely to come to the New York Times Web server (which might be provided by Akamai or other similar vendors), and then

content often represents the bandwidth of the site and can be easily copied through CDN. Websites usually use third-party CDN. For example, Facebook's static files are hosted by Akamai, the largest CDN provider. For example, when you try to ping static.ak.fbcdn.net, you may obtain a response from an akamai.net server. Interestingly, when you ping the server again, the response server may be different. This shows that the load balancing function start

download page, such as files, stylesheets, scripts, and Flash. Instead of the difficult task of refactoring the system, it is better to distribute the static content first. This not only greatly reduces the response time, but also due to the existence of CDN, the distribution of static content is very easy to implement. A CDN is a collection of geographically distributed Web servers that you use to publish content more efficiently. Web server is typically selected for specific user services bas

ISP and Web companies have been setting up World IPv6 Launch Day for one year. Akamai reported that IPv6 traffic on the IPv6 content transmission platform has increased by 250%, the number of requests sent every day reaches 10 billion. Although this traffic is still far behind IPv4, it continues to grow. At the same time, the misunderstanding of IPv6 has always affected the deployment of this Protocol and the security of the enterprise network. After

To make HTTPS global! Let's Encrypt pulled Facebook It is reported that the Let's Encrypt Project (designed to promote the globalization of HTTPS encryption protocols and allow more websites to adopt HTTPS encryption protocols) has officially opened Beta testing since January 1, December 3. At the same time, Let's Encrypt project team also said that Facebook became its latest gold medal sponsor. Let's Encrypt Project In November 2014, companies such as EFF, Mozilla, Cisco, and

), which is converted to a bandwidth capacity of hundreds of T bit/s per cable.Access network bandwidthThe backbone, or fiber link, is the core data route that makes up the Internet, capable of transmitting hundreds of tbit/s of data. However, the available capacity of the access network is much less and varies greatly with different access technologies: dial-up, DSL, wired cable, host-based wireless technology, fiber-to-home, local router performance. The user's available bandwidth is among the

in mind that 80% to 90% of the response time in the end user's response time is used to download images, stylesheets, scripts, Flash, and other page content. This is the Golden Code of website performance. It would be a little better to distribute static content first, than to redesign your application architecture for a more difficult task. This not only shortens response times, but it is easier to implement for content distribution networks.Content Delivery Network,cdn is made up of a series

efficiently generate an output for this page and then reuse it for a maximum of 60 seconds, where the page will be re-executed and the output will be added to the ASP. This behavior can also be done by using some low-level programmable APIs. There are several configurable settings for the output cache, such as the VaryByParams property that you just talked about. VaryByParams is just being requested, but also allows you to specify an HTTP GET or http POST parameter to change the cache entry. Fo

technology is not a function, you must ensure that all links are available, especially internal.6. Have you checked the basics? (Including pages, connection information and forms)Pages and contact pages are usually the longest pages to see. So you need to check the information on these pages twice or even three times. Make sure that the contact information is complete. Make sure that the process of entering the contact form is smooth. I often encounter some websites that have blank pages after

download page, such as files, stylesheets, scripts, and Flash. Instead of the difficult task of refactoring the system, it is better to distribute the static content first. This not only greatly reduces the response time, but also due to the existence of CDN, the distribution of static content is very easy to implement. A CDN is a collection of geographically distributed Web servers that you use to publish content more efficiently. Web server is typically selected for specific user services bas

"fbcdn.net" means in the address. The smart answer is "Facebook content distribution Network". Facebook uses content distribution networks (CDNs) to distribute static files like images, CSS tables, and JavaScript files. As a result, these files will be backed up in many CDN data centers around the world.Static content often represents the bandwidth size of the site and can be easily replicated through a CDN. A third-party CDN is usually used by the website. For example, Facebook's static files

is usually used by the Website. For example, Facebook's static files are hosted by akamai, the largest CDN provider.For example, you might get a response from a akamai.net server when you try to ping static.ak.fbcdn.net. interestingly, When you ping again, the server may be different, which means that the load balance behind the scenes is starting to Work.The browser sends further asynchronous (AJAX) requests (browser send asynchronous (ajax) Request

more dangerous than those that you have recognized. We started a detailed investigation and saw the result: Connecting these with other results makes everything clear. Cucumbertown is a food channel in Nigeria and a quality blog in Thailand, making it popular in different regions. But as you can see, page loading times in these countries are not normal. Cucumbertown is an asset-heavy website. although we have postponed all operations on requieJS and actively loaded JavaScript as needed, we hav