Microservice

Express.js is a JavaScript framework used to build web applications with Node.js. Multer is a middleware library used to handle file uploads in Express.js applications.

CRUD (Create, Read, Update, Delete) are the four basic operations commonly used in data management in web applications. Express.js is a JavaScript framework used to build web applications with Node.js, while MongoDB is a NoSQL database used to store and manage data.

Kong Gateway provides features called "service" and "route" that can be used to manage access to specific services.

Key authentication is a method of authentication that uses a key to authenticate access to services available in the Kong API Gateway. Key authentication is one of the plugins available in the Kong API Gateway that can be used to manage access to services by requiring clients to include a key in their requests.

Kong Gateway is an API gateway platform used to manage, control, and secure access to APIs. This API gateway provides features such as load balancing, caching, and SSL/TLS encryption to help manage web, mobile, and IoT traffic, and offers additional plugins for API processing.