Is There a DNS Doctor in the House?

An apple a day may keep the doctor away, but what if the apple itself is sick? Starting a little before 6 am EST on Wednesday, users across Apple’s various internal applications services such as iTunes, iBooks, the App store, and several others experienced growing frustration as repeated attempts to…

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Dissecting DNS Communications

In our previous articles on DNS we gave an overview of the recursion process, but before we can go further on how DNS impacts performance, we need to understand how it the DNS protocol works. In the TCP/IP Protocol suite, DNS is an application layer protocol. DNS protocol relies on…

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