Microservice Ocelot API Gateways

When building APIs we need API Gateway

There are many API Gateways available like Ocelot, Kong, Express API for Express Js

Here we will look into Ocelot

There is a possibility of single point of failure with Gateway API. So some projects dont prefer this approach

For microsrevice architecture, it’s good to use Gateway API

Here I will be showing simple microservices like Developer API, Tester API and Gateway API

For Developer API, run it in port 7001

For Tester API, run it in port 7002

For Gateway API, run it in port 7000

Lets add simple controller to return simple data

For DeveloperController look at below image

For Tester Controller

Now in Gateway API we add a ocelot.json for the microservice path urls and redirects

And we need to add JSON file path to Builder to read

Add Ocelot service as Middleware to startup

Now in ocelot.json lets add the configuration redirects for microservices. So here we add Developer API and Tester API paths with the ports of 7001 and 7002 where they are running

If you run our APP, for Tester API

If you run your developer API

Now if we run our Ocelot Gateway API, we can see the output with port 7000 running developer api

For Tester API,

Hope you enjoyed this article about how we can access microservices through API Gateway

Code in my Github: https://github.com/pbndru/Phani.ApiGateway