⭐Use contract-first approach and generate code with OpenAPI - Introduction to OpenAPI

This video shows you how to create OpenAPI document using OpenAPI Specification 3.0. I will help you understand the basics of OpenAPI Specification 3.0 so that you can start using OpenAPI for your API design. This video also introduces you to several tools you can use to generate server and client code from an OpenAPI document. Use a contract-first approach to design REST API will give you multiple benefits from better collaboration to time savings with code generation. GitHub link to completed OpenAPI document: https://github.com/nerdicoda/calculator-rest-api/tree/openapi Useful links: - Swagger Editor: https://editor.swagger.io/ - Swagger Codegen: https://swagger.io/tools/swagger-codegen/ - OpenAPI Generator: https://github.com/OpenAPITools/openapi-generator - OpenAPI Specification 3.0.3: https://github.com/OAI/OpenAPI-Specification/blob/main/versions/3.0.3.md - Swagger OpenAPI Guide: https://swagger.io/docs/specification/about/