Mobile Edge Computing DNS Caching is the shorter road to web page downloads

 We are online almost as a second nature. In our everyday life, more and more questions are answered with “Google it” followed by a swift click on our ever-handy mobile devices. The simple act of going online triggers a cascade of activities. In many cases, it also forces us to spend time waiting due to slow response times.

There are many factors that contribute to the relative slowness of the mobile web. This post focuses on the effect of the Domain Name Server (DNS) resolution; the translation of a domain name into an IP address (e.g.

Each time we access a web address, the address is translated into its numerical IP address. The web browser or application uses the resolved IP address to establish a TCP/HTTP connection. This process occurs to the web page itself and every resource within it, such as images, videos CSS files etc.. According to stats gathered by the HTTP Archive, in the past year, over 47% of surveyed web pages have between 50-125 requests per page.

In mobile networks, the round-trip-time (RTT), which is the time it takes requests to travel from the client across the entire mobile network to the DNS server and back, is often more than 100ms. Adding this number for consecutive DNS resolution requests means that a significant amount of time is spent on this task alone; before the requested data is accessed.

Mobile Edge Computing DNS Caching can offer a short cut

MEC DNS Caching Diagram

Mobile Edge Computing (MEC) platform distribute computational power to the radio edge of the mobile network. The MEC platform enables applications to run inside the mobile Radio Access Network (RAN) increasing proximity to mobile users, drastically reducing RTT and improving the user experience.

The Mobile Edge Computing DNS Caching and server service leverages the MEC platform to reduce the time spent on DNS resolutions. (Note taht this approach may also be used as the traffic redirection engine, as the MEC standard moves forward.)  The service stores popular URLs and correlating IP addresses locally. As a result, now many DNS requests only travel the short distance to the radio access network and back accelerating the webpage load time and improving the user experience.

Here are 2 short clips illustrating the acceleration provided by the Saguna Open-RAN DNS Caching.

1. Saguna’s website download time without DNS Caching is 10.10 seconds in this trial.

2. After the relevant DNS addresses are stored in the Saguna Open-RAN DNS Cache, the webpage loading time is reduced by 2.8 seconds.