The past few years of nodejs, microservices and cloud development has been a fast-forward from 90s (or even 60s) technologies and ideas.

I feel like everything that was cool in 2010 has reached the point where its functionality either converged with "old tech" or just died because there were too many problems with it.

Examples:

- JSON wanted to be simpler than XML. Now it has schemas, JsonPath, comments (but only supported by some parsers), and is still pretty verbose and has way too few data types (datetime anyone?)

- MongoDB wanted to be a document DB with shards and eventual consistency, now it also supports ACID-like operations

- JavaScript was cool because it was untyped, now TypeScript is the new cool kid on the block. It's only a matter of time until untyped programming is the new hype again

- SemVer got somehow rediscovered

- People made fun of Maven, nowadays everybody and their mother are pulling directly from npmjs.org

The detour into non-SQL databases I find particularly hilarious, because as a greybeard I was sitting on the sidelines the whole time muttering "it'll never work". Now they all seem to have SQL interfaces for some reason.

> JavaScript was cool because it was untyped, now TypeScript is the new cool kid on the block.

I don't think JavaScript has ever been cool. Before TypeScript, it was CoffeeScript that was cool.