Thanks for reporting @karthikmucheli. Would you like to create a pull request for that?
Aggregator Microservices
Credits link in Aggregator Microservices is responded with a blank page. 
The current link is http://blog.arungupta.me/microservice-design-patterns/
aggregator-microservices/README.md
aggregator-microservices/README.md
diff --git a/aggregator-microservices/README.md b/aggregator-microservices/README.md
index 4d64178a66a5..74a411fc5cfb 100644
--- a/aggregator-microservices/README.md
+++ b/aggregator-microservices/README.md
@@ -27,4 +27,4 @@ Use the Aggregator Microservices pattern when you need a unified API for various
 
 ## Credits
 
-* [Microservice Design Patterns](http://blog.arungupta.me/microservice-design-patterns/)
+* [Microservice Design Patterns](http://web.archive.org/web/20190705163602/http://blog.arungupta.me/microservice-design-patterns/)
