diff --git a/README.md b/README.md
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@@ -235,6 +235,7 @@ An updated and curated list of selected readings to illustrate High Scalability,
 		* [Sharding MySQL at MailChimp](https://devs.mailchimp.com/blog/using-shards-to-accommodate-millions-of-users/)
 		* [Sharding MySQL (3 parts) at Evernote](https://blog.evernote.com/tech/2015/10/08/the-great-shard-migration-part-ii/)
 		* [Sharding Layer of Schemaless Datastore at Uber](https://eng.uber.com/schemaless-rewrite/)
+		* [Sharding & IDs at Instagram](https://instagram-engineering.com/sharding-ids-at-instagram-1cf5a71e5a5c)
 		* [Partitioning Main MySQL Database at Airbnb](https://medium.com/airbnb-engineering/how-we-partitioned-airbnb-s-main-database-in-two-weeks-55f7e006ff21)			
 * [NoSQL Databases](https://www.thoughtworks.com/insights/blog/nosql-databases-overview)
 	* [Key-Value Databases (DynamoDB, Voldemort, Manhattan)](http://highscalability.com/anti-rdbms-list-distributed-key-value-stores)