diff --git a/README.md b/README.md
index a1bb334..487c4ed 100644
--- a/README.md
+++ b/README.md
@@ -341,8 +341,10 @@ An updated and curated list of readings to illustrate best practices and pattern
 		* [Solr: Improving Performance for Batch Indexing at Box](https://blog.box.com/blog/solr-improving-performance-batch-indexing/)	
 		* [Geosharded Recommendations (3 parts) at Tinder](https://tech.gotinder.com/geosharded-recommendations-part-3-consistency/)				
 * [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)
-		* [Scaling Mapbox infrastructure with DynamoDB Streams](https://blog.mapbox.com/scaling-mapbox-infrastructure-with-dynamodb-streams-d53eabc5e972)
+	* [Key-Value Databases (DynamoDB)](http://www.cs.ucsb.edu/~agrawal/fall2009/dynamo.pdf)
+		* [DynamoDB at Nike](https://medium.com/nikeengineering/becoming-a-nimble-giant-how-dynamo-db-serves-nike-at-scale-4cc375dbb18e)
+		* [DynamoDB at Segment](https://segment.com/blog/the-million-dollar-eng-problem/)
+		* [DynamoDB at Mapbox](https://blog.mapbox.com/scaling-mapbox-infrastructure-with-dynamodb-streams-d53eabc5e972)
 		* [Manhattan: Distributed Key-Value Database at Twitter](https://blog.twitter.com/engineering/en_us/a/2014/manhattan-our-real-time-multi-tenant-distributed-database-for-twitter-scale.html)
 		* [Sherpa: Distributed NoSQL Key-Value Store at Yahoo](https://yahooeng.tumblr.com/post/120730204806/sherpa-scales-new-heights)
 		* [HaloDB: Embedded Key-Value Storage Engine at Yahoo](https://yahooeng.tumblr.com/post/178262468576/introducing-halodb-a-fast-embedded-key-value)
@@ -350,15 +352,14 @@ An updated and curated list of readings to illustrate best practices and pattern
 		* [MPH: Fast and Compact Immutable Key-Value Stores at Indeed](http://engineering.indeedblog.com/blog/2018/02/indeed-mph/)
 		* [zBase: High Performance, Elastic, Distributed Key-Value Store at Zynga](https://www.zynga.com/blogs/engineering/zbase-high-performance-elastic-distributed-key-value-store-2)
 		* [Venice: Distributed Key-Value Database at Linkedin](https://engineering.linkedin.com/blog/2017/02/building-venice-with-apache-helix)
-		* [DynamoDB Hot Shards at Segment](https://segment.com/blog/the-million-dollar-eng-problem/)
 	* [Columnar Databases (Cassandra, HBase, Redshift)](https://aws.amazon.com/nosql/columnar/)
 		* [Cassandra](http://www.cs.cornell.edu/projects/ladis2009/papers/lakshman-ladis2009.pdf)
-			* [Scaling Cassandra Cluster at Walmart](https://medium.com/walmartlabs/avoid-pitfalls-in-scaling-your-cassandra-cluster-lessons-and-remedies-a71ca01f8c04)
 			* [Cassandra at Instagram](https://www.slideshare.net/DataStax/cassandra-at-instagram-2016)
-			* [Scale Ad Analytics with Cassandra at Yelp](https://engineeringblog.yelp.com/2016/08/how-we-scaled-our-ad-analytics-with-cassandra.html)
 			* [Storing Images in Cassandra at Walmart](https://medium.com/walmartlabs/building-object-store-storing-images-in-cassandra-walmart-scale-a6b9c02af593)
 			* [Storing Messages with Cassandra at Discord](https://blog.discordapp.com/how-discord-stores-billions-of-messages-7fa6ec7ee4c7)
-			* [Scale to 100+ Million Reads/Writes using Spark and Cassandra at Dream11](https://medium.com/dream11-tech-blog/leaderboard-dream11-4efc6f93c23e)		
+			* [Scaling Cassandra Cluster at Walmart](https://medium.com/walmartlabs/avoid-pitfalls-in-scaling-your-cassandra-cluster-lessons-and-remedies-a71ca01f8c04)
+			* [Scaling Ad Analytics with Cassandra at Yelp](https://engineeringblog.yelp.com/2016/08/how-we-scaled-our-ad-analytics-with-cassandra.html)
+			* [Scaling to 100+ Million Reads/Writes using Spark and Cassandra at Dream11](https://medium.com/dream11-tech-blog/leaderboard-dream11-4efc6f93c23e)		
 			* [Moving Food Feed from Redis to Cassandra at Zomato](https://www.zomato.com/blog/how-we-moved-our-food-feed-from-redis-to-cassandra)
 			* [Benchmarking Cassandra Scalability on AWS at Netflix](https://medium.com/netflix-techblog/benchmarking-cassandra-scalability-on-aws-over-a-million-writes-per-second-39f45f066c9e)
 			* [Service Decomposition at Scale with Cassandra at Intuit QuickBooks](https://quickbooks-engineering.intuit.com/service-decomposition-at-scale-70405ac2f637)