A certain degree of code debt accumulates over the development timeline when the team constantly chooses quick solutions over right solutions.
ab is a simple load testing command from Apache. It benchmarks your HTTP server by automating a scenario of sending multiple requests with concurrent clients.
In early days if you had entered twitter.com then your network could only resolve or understand it if the hosts file in your computer already had a record of its IP address mapped to the domain. Today most of the internet looks up to 188.8.131.52 and 184.108.40.206.
Useful links for a developer to bookmark. It's a randomly curated collection. Open to Contributions.