diff --git a/README.md b/README.md
index 4157625..602682b 100644
--- a/README.md
+++ b/README.md
@@ -176,6 +176,7 @@ A curated list of selected readings to illustrate Scalability, Availability, and
 		* [Redis in Chat Architecture of Twitch (from 27:22)](https://www.infoq.com/presentations/twitch-pokemon)
 		* [Learn Redis the hard way (in production) at Trivago](http://tech.trivago.com/2017/01/25/learn-redis-the-hard-way-in-production/)
 	* [Practical NoSQL resilience design pattern for the enterprise (eBay)](https://www.ebayinc.com/stories/blogs/tech/practical-nosql-resilience-design-pattern-for-the-enterprise/)		
+	* [How Sharding Works](https://medium.com/@jeeyoungk/how-sharding-works-b4dec46b3f6)
 * [RDBMS (MySQL, MSSQL, PostgreSQL)](https://www.mysql.com/products/cluster/scalability.html)
 	* [MS SQL versus MySQL](https://www.upwork.com/hiring/data/sql-vs-mysql-which-relational-database-is-right-for-you/)
 	* [Why SQL is beating NoSQL, and what this means for the future of data](https://blog.timescale.com/why-sql-beating-nosql-what-this-means-for-future-of-data-time-series-database-348b777b847a)