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Why you might want to use boring technologies
There are technologies that are over-glorified overhyped and there are technologies that get the job done, sometimes these two are not the same thing.
If you need to solve a technically boring problem, you might be better off using a boring technology instead of whatever is on the front page of Hacker News.
Rockstar databases
Episode 1 - Mongo DB Is Web Scale https://www.youtube.com/watch?v=b2F-DItXtZs
Why You Should Never Use MongoDB http://www.sarahmei.com/blog/2013/11/11/why-you-should-never-use-mongodb/
https://news.ycombinator.com/item?id=6712703
Re: MemSQL the "world's fastest database"? http://www.postgresql.org/message-id/4FE8A2DE.5050806@agliodbs.com
https://news.ycombinator.com/item?id=8399100
MongoDB stands for humongous:
http://docs.mongodb.org/manual/reference/limits/
http://stackoverflow.com/questions/6766781/maximum-length-for-mysql-type-text/6766854#6766854
https://blog.shodan.io/its-the-data-stupid/
http://cryto.net/~joepie91/blog/2015/07/19/why-you-should-never-ever-ever-use-mongodb/
Cool Architectures
Episode 2 - All The Cool Kids Use Ruby https://www.youtube.com/watch?v=5GpOfwbFRcs
Node.js Is Bad Ass Rock Star Tech https://www.youtube.com/watch?v=bzkRVzciAZg