[xtracto]

I am tech advisor to a bunch of startups. One of them doing stock buy/sell came to me with their MongoDB based system. The first thing I told them is that using a document based db for oltp for their use case was going to give them problems.

I saw it first hand 10 years ago, and had to do a migration.

Their justification for using mongo was that their system is very dynamic so their data changes a lot and sql based DBs dont allow that. I told them about DBA migrations and whatnot, but I just haven't been able to convince them.

It's sad seeing how they are digging into the same hole I had to digg out myself from a decade ago.