Recently I worked on constructing a simple Content Delivery Network using Bind DNS. I will share my experience in this blog post. Bind DNS is an open source DNS server. It is the most widely used DNS server. DNS is one of the building blocks of the internet. The main use of DNS is to translate domains names to IP Addresses. DNS also has other uses such as securing email.
ReadContainers are light weight virtual machines that can be used to isolate processes. Containers implement operating system level virtualization. This means that all containers running on a host will share the kernel of the host operating system.
ReadW3C Markup Validator and Validator.nu are two useful tools that can be used to validate HTML code. W3C Markup validator allows validating xhtml, html, xml, mathml and more. Validator.nu allows validating HTML 5 code. The W3C Markup validator is written in Perl, while the Validator.nu is written in Java. Both tools are actively being developed.
ReadRocket Chat and Wekan are useful online collaboration tools. Both tools are open source and can be downloaded and installed for free.
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