{"product":{"product_id":"1680502530","title":"Seven Databases in Seven Weeks: A Guide to Modern Databases and the NoSQL Movement","price":"37.49","image_url":"https://m.media-amazon.com/images/I/518gwCxhOkL._SL500_.jpg","url":"https://www.amazon.com/dp/1680502530"},"comments":[{"body":"thanks, it means \"egg thrower\" in German\\^\\^\r\n\r\nIn general, I think, go with a relational/SQL database – simply because there’s much more you can do with it. They can handle complex data (with many relations) they allow for great ad-hoc analysis (queries) and they are programmable (stored procedures/functions) – least but not last, the vast amount of tools available.\r\n\r\nAs you might know there are different kind of NoSql-Databases, Document Stores, Graphs, Key/Value Stores... Each fits its very own purpose. Should you need any of the features they offer and feeling limited by a relational DB, consider switching, or add it to the application where it’s useful. But never forget: There’s always a price to pay. That also goes for MongoDB. You may win benefits, but there are some drawbacks.\r\n\r\nTo me, NoSql's are not as flexible and universal like relational/SQL databases, hence limited their use cases.\r\n\r\nI’ve only worked with MongoDB and Redis myself. They're used at my company as well. Can’t say much about production management, since I never worked as a DBA, I’m from the dev side. However sharding is a nice concept, first encountered it in Teradata.\r\n\r\nSome years ago I worked myself through [this](https://www.amazon.de/Seven-Databases-Weeks-Modern-Movement/dp/1680502530/ref=sr_1_1?__mk_de_DE=%C3%85M%C3%85%C5%BD%C3%95%C3%91\u0026amp;crid=2EO2D3AHE0J4N\u0026amp;dchild=1\u0026amp;keywords=7+databases+in+7+weeks\u0026amp;qid=1613810246\u0026amp;sprefix=7+databas%2Caps%2C159\u0026amp;sr=8-1) book. Which was a great start into the NoSql world. Just found out, there's a second edition now. Riak is obviously dead (was used in the mobile game \"flappy bird\") and replaced with Postgresql.","subreddit_name":"mongodb","author":"eierwerfer"}]}