diff --git a/README.md b/README.md
index b262e85..2b619b7 100644
--- a/README.md
+++ b/README.md
@@ -44,6 +44,7 @@ Contributions are always welcome!
 	* [Key-Value Databases (Voldemort, Dynomite)](http://highscalability.com/anti-rdbms-list-distributed-key-value-stores)
 	* [Document Databases (Cassandra, Vertica, Sybase IQ)](https://msdn.microsoft.com/en-us/magazine/hh547103.aspx)
 		* [Consistent Hashing in Cassandra](https://blog.imaginea.com/consistent-hashing-in-cassandra/)
+		* [When NOT to use Cassandra?](https://stackoverflow.com/questions/2634955/when-not-to-use-cassandra)
 		* [Storing Images in Cassandra at Walmart Scale](https://medium.com/walmartlabs/building-object-store-storing-images-in-cassandra-walmart-scale-a6b9c02af593)
 		* [Cassandra at Instagram](https://www.slideshare.net/DataStax/cassandra-at-instagram-2016)
 		* [How Yelp Scaled Ad Analytics with Cassandra](https://engineeringblog.yelp.com/2016/08/how-we-scaled-our-ad-analytics-with-cassandra.html)