Measure number of issues corrected by code authors in response to a Discord comment

[Faeranne]

As per the conversation in #15. Likely would best be done with a database. So what db do we use?

[openjck]

MongoDB? It's a common choice for Node projects because it stores JSON-like documents.

[groovecoder]

I have serious reservations about Mongo. Probably fine to start with, but if usage increases and the stored object complexity goes up, I'd suggest quickly moving to a SQL RDBMS with sequelize.

[groovecoder]

In addition, heroku apps all come with a free tier of heroku-provided Postgres. Though there are plenty of good addons for free Mongo dbs too. I had a good experience with MongoHQ.

[openjck]

Interesting. What are some of the reservations? Not that I doubt you. It's just that people talk about Mongo like it's a given with Node projects.

[groovecoder]

It has some fundamental (by design) issues with data integrity, which is the main concern. Apart from that, it's a very code and CPU intensive data store, which can make some operations (data analysis & reporting) much more complicated than SQL alternatives.

[Faeranne]

As a former Mongo enthusiast, I've seen the data integrity issues @groovecoder has mentioned. For tracking large things like number of corrected lines, it may not matter as much, but if we use it for things like #79 it could be a problem. I personally have enjoyed both couchdb and postgres over Mongo.