[HTML] comparison between CDN and WPO in front-end performance optimization, cdnwpo

[HTML] comparison between CDN and WPO in front-end performance optimization, cdnwpo

By storing resources closer to users, CDN can shorten the round-trip to servers and speed up page loading to solve performance problems. The WPO solution, such as Radware's FastView, improves the front-end performance so that the page is displayed more effectively in the browser.

"I have already used Content Delivery Network (Content Delivery Networks, CDN). Why do I still need a front-end Performance Optimization (WPO) solution ?" This is one of the most frequently asked questions. To understand how front-end WPO can make up for the lack of CDN and ultimately provide significant acceleration effects for web pages or enterprise applications, you must understand the different problems that the two solutions can solve.

Performance issues that CDN can solve

Although content delivery network (CDN) improves network availability and saves bandwidth for global users, the main problem solved by CDN is latency. Latency means that the hosting server receives the right page resources (images, CSS files, etc) the time required to process the request and finally send the webpage and related resources to the visitor.

Latency depends largely on the distance between the user and the server, and the number of resources contained in the webpage. If all your resources are hosted in San Francisco and users in London visit your page, every request will go through a long round trip from London to San Francisco and then return to London. If your page contains 100 objects, your browser must send 100 independent requests to your server to obtain these objects.

Generally, the latency is within ms, but it may also become higher. Especially for mobile users who access the website through 3G networks, the page loading time is generally increased to 2 ~ 3 seconds, think about this as one of the factors that slow page loading, and you will understand the importance of Web performance optimization.

Content Delivery Network (CDN) caches content on distributed servers across regions or around the world to bring webpage resources closer to users and shorten the round-trip time between users and servers, then solve the latency problem.

CDN is not useful everywhere

CDN is essential for most websites, but not all websites require CDN. For example, if your resources are hosted locally and the users are also local users, CDN will not be helpful in improving Web performance.

Unlike some website operators, CDN is not an independent performance solution. In the E-commerce and SaaS fields, the two most common performance challenges are the processing of third-party content and servers. CDN is powerless to meet these requirements.

How can WPO make up for CDN deficiency?

By storing resources closer to users, CDN can shorten the round-trip to servers and speed up page loading to solve performance problems. The WPO solution, such as Radware's FastView, improves the front-end performance so that the page is displayed more effectively in the browser.

The WPO Solution uses some optimization measures to increase rendering time. FastView measures include the following:

· Resource Integration reduces the latency of packets transmitted over the network.

· Resources (images and texts) are compressed to reduce the total load.

· Optimize the rendering mode of resources in the browser, ensure that key content is loaded first, and load less important content later, such as third-party scripts such as page analysis.

· Optimize and utilize browser cache to cache all webpage resources involved by users.

· Intelligently predict the next access page and pre-load relevant resources to the browser cache to make the resources available so that the webpage rendering process can be called immediately.

· Many other WPO technologies. Currently, FastView uses 22 advanced acceleration technologies, and Radware R & D teams are constantly upgrading the solution with new cutting-edge patented technologies.

Benefits of integration of CDN and front-end WPO

As shown in the following table, the integration of CDN and WPO solutions has a great impact on the Evaluation Indicators of each page, from the number of requests to the effective load, to the rendering and loading time, it has been greatly improved.

All in all, the integrated CDN/WPO solution can speed up the web page by four times and reduce the total load by 70%.

Using an automated WPO solution to supplement the CDN deficiency brings many other benefits, such:

Automatically rename the file so that it can serve the CDN, And if manually completed, this will be a very time-consuming task. The FastView solution can perform this operation automatically, greatly saving developers' time.

Adding invalid header files is the best page optimization technology to be used. Although it is relatively easy to add header files, Version Control is tricky, especially after CDN is used, you may need to spend a lot of effort to focus on CDN clearing tools, either it takes a lot of development time to integrate CDN APIs. The automated WPO solution can solve these problems, saving a lot of development time and reducing the error margin.

Summary

Radware security experts pointed out that CDN and front-end WPO are highly complementary and can be well combined. In addition, users also found that CDN and WPO technologies can be integrated with internal performance engines of enterprises as part of Web performance acceleration policies. FastView, as the best Web Acceleration Solution for Radware, can help users maximize Web performance.

Original article: Use the frontend performance optimization solution to solve the CDN Deficiency