That piece was written in 2014, which was a different time ;)

Plus, if we were to take the vendor words at face value, we'd all be using Docker and MongoDB in production.

I work for a large company that used docker in production. A lot of companies are. There are a lot of big names using Kubernetes, Mesos or some other container orchestration system.

Just like many companies use mongodb and nanoservices.

:) My last client (very, very big client) for the past year ran nearly all their production systems with Docker and MongoDb...

Never had any problems with Docker. MongoDB on the other hand... Suffice to say it is really fragile when spread across multiple datacentres, which is probably not a surprise to HN.

Details matter. All updates in the Datastax post are protected by LWT. That code is correct. The OP's code was wrong, because he was mixing non-LWT updates.