We live in a world where MongoDB is at the butt-end of all Database and ACID jokes. But the award should go the Windows Registry, a Key-Value store that combin

We live in a world where MongoDB is at the butt-end of all Database and ACID jokes. But the award should go the Windows Registry, a Key-Value store that combines the drawbacks of a half-assed filesystem with the advantages of piping your database to /dev/null. A Database would be capable of using an index to traverse all the keys. The Registry does a linear lookup at each pathnode. There is a good blogpost [https://rwmj.wordpress.com/2010/02/18/why-the-windows-registry-sucks-technically/ https://rwmj.wordpress.com/2010/02/18/why-the-windows-regist...] that details the insanity of a database that managed to be worse than MongoDB at the lowest level of jokes before MongoDB was even invented.