> If you decide to change to another version of the software or different software entirely, you just do that.
I think this is the main point here. Especially in startups, parts get written and rewritten many times. Ruby backend too slow? Rewrite in Scala/Java/C++. Relational database doesn't quite fit? Extract a part of it into MongoDB etc. Besides, the community behind all these tools is healthy and responsive. Example: we had a stupid problem with Redis, asked on the forum and the guy who wrote Redis responded in matter of hours. Hell, maybe he even reads these words right now (hi!).
Call it cultural, call it technological, but there is quite a difference between two worlds.
I think this is the main point here. Especially in startups, parts get written and rewritten many times. Ruby backend too slow? Rewrite in Scala/Java/C++. Relational database doesn't quite fit? Extract a part of it into MongoDB etc. Besides, the community behind all these tools is healthy and responsive. Example: we had a stupid problem with Redis, asked on the forum and the guy who wrote Redis responded in matter of hours. Hell, maybe he even reads these words right now (hi!).
Call it cultural, call it technological, but there is quite a difference between two worlds.