Interesting blog post. Thanks for sharing. This part, in particular, resonated with me: > Querying data is a little harder. Apache’s Cassandra uses Cassandra Q

Interesting blog post. Thanks for sharing. This part, in particular, resonated with me: > Querying data is a little harder. Apache’s Cassandra uses Cassandra Query Language or CQL which, interestingly, does not allow for joins. MongoDB just sends JSON objects in reaction to requests. Need all users in Ohio? MongoDB sends a big chunk of data. I fondly recall the late night debates with fellow colleagues in the industry, several years ago, when we were pitching a database design to a startup bank in South Africa. Back then during those fights some even suggested that the NoSQL vs YesSQL debate was a religious war - much like vi vs emacs - but in the case of data storage it quickly became obvious that each philosophy had its respective strengths and weaknesses - which were in turn easy to understand, to sell, and to add value with. But nowadays I must confess I do not know of many shops using NoSQL, and I suspect it is for the reasons quoted from the blog post that I shared above. I would love to read your insight if you've been part of a big NoSQL deployment. We struggled to sell it, so I suspect we must have missed out on some interesting opportunities.