Update README.md

Author: mxssl

README.md

@@ -81,6 +81,7 @@ This repository is an attempt to consolidate useful resources for Site Reliabili
 - [ ] [ACID vs BASE in Databases](https://medium.com/geekculture/acid-vs-base-in-databases-1bcad774da26)
 - [ ] [Understanding Database Sharding](https://www.digitalocean.com/community/tutorials/understanding-database-sharding)
 - [ ] [Data Replication in DBMS](https://www.geeksforgeeks.org/data-replication-in-dbms)
+- [ ] [SQL vs. NoSQL Database: When to Use, How to Choose](https://towardsdatascience.com/datastore-choices-sql-vs-nosql-database-ebec24d56106)
 
 ## CI/CD