What could be simpler than returning HTTP status codes? Did the page render? Great, return 200. Does the page not exist? That’s a 404. Do I want to redirect the user to another page? 302, or maybe 301.

In the unicast world, each endpoint on the internet has a unique IP address assigned to it. This means that each of LinkedIn’s many PoPs (Points of Presence) has a unique IP address associated with it. DNS is then used to assign users to PoPs based on geographical location.

From an end-user perspective, the TTY system in Linux (or any POSIX-like OS) is both functional and intuitive. For example, the input you type in usually goes to the process you expect it to go to, CTRL+Z usually suspends the process you expect to see suspended, CTRL+C usually interrupts the process you expect to see interrupted, and so on.

It takes a 'snapshot' of a webpage that will always be online even if the original page disappears.
This can be useful if you want to take a 'snapshot' a page which could change soon: price list, job offer, real estate listing, drunk blog post, ...

Transform your data into interactive network maps, discover new relations and get insight about complex issues from a simple interface.

Docker 1.9 includes for the first time the concept of the "Container Network Model". Read more on CNM. Basically, CNM is about creating small, micro-segmented networks for groups of containers to communicate over.

Writing code for multiple platforms can be a lot of work. It can be even more work to have to completely rewrite it for each one, too. What if you wrote an application in C++, but wanted it to be displayed in the browser somehow? Well now, with a tool called Emscripten, that’s possible.

AppArmor profile generator for docker containers. Basically a better AppArmor profile, than creating one by hand, because who would ever do that.

Inj3ct0r is the ultimate database of exploits and vulnerabilities and a great resource for vulnerability researchers and security professionals.