This is for tutorial Kong that need very simple and static node.js serving as API.
‘What is KONG?
Kong is Orchestration Microservice API Gateway. Kong provides a flexible abstraction layer that securely manages communication between clients and microservices via API. Also known as an API Gateway, API middleware or in some cases Service Mesh. It is available as open-source project in 2015, its core values are high performance and extensibility.
You can read more detail on https://medium.com/@far3ns/kong-the-microservice-api-gateway-526c4ca0cfa6
A lot of Plugin on KONG, one of them is OAuth 2.0. So nowadays no need to develop byself for OAuth on your system. Here is the tutorial https://medium.com/@far3ns/kong-oauth-2-0-plugin-38faf938a468