A NoSQL (short for Not Only SQL) database is any non-relational data store. It usually focuses on speed and scalability. NoSQL has been taking the web development world by storm for the past seven years. Huge companies, such as Netflix and Google, have announced that they are moving many of their services to NoSQL databases, and many smaller companies have followed their example.
This chapter will deviate from the rest of the book in that it will not mostly focus on Flask. The focus on the database design might seem odd in a book about Flask, but choosing the correct database for your application is arguably the most important decision that you can make while designing your technology stack. In the vast majority of web applications, the database is the bottleneck, so the database you pick will determine the overall speed of your app. A study conducted by...
