Adding Caching Techniques (#39)

* Update README.md

JWT Auth Sample App included

* Update README.md

Optimization of Node.js Application

* Update README.md

* Update README.md

Readme Updated

README.md

@@ -225,6 +225,10 @@ More free resources can be found on [codeburst.io](https://codeburst.io)
   * [Building a modern backend API with Node](https://scotch.io/tutorials/building-and-securing-a-modern-backend-api?utm_source=mybridge&utm_medium=blog&utm_campaign=read_more)
   * [Node JS Login with Passport - YouTube](https://www.youtube.com/watch?v=Z1ktxiqyiLA)
   * [10 Best Practices for Writing Node.js REST APIs](https://blog.risingstack.com/10-best-practices-for-writing-node-js-rest-apis/?utm_source=mybridge&utm_medium=blog&utm_campaign=read_more)
+* Optimization Techniques
+  * [Make your node server faster by caching responses with redis](https://community.risingstack.com/redis-node-js-introduction-to-caching/)
+   
+
 
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 ### Learn Python