Complete API Tutorial (from design to implementation with OpenAPI)

YouTube Excerpt: In this tutorial, we will learn how to design and implement a REST API using an API-first approach. That means we start from designing and documenting the API using the OpenAPI specification. Then we use the specification to auto-generate our microservices in any language we wish. I created chapters as well to help you find what you need! 0:00 Intro 0:22 High Level Plan 6:13 Specification Setup 7:40 Resource Definition 8:53 Request and Responses 10:01 List Products 12:02 Create Product 13:01 Read Update Delete Product 14:44 Pagination 16:59 Security 18:07 Code Generation 19:22 Customize Spring Boot 20:11 Customize Python Flask 21:11 Interactive Documentation 21:37 Conclusion In the first section we create a high-level plan of the API while discussing the theory behind it. We cover operation paths, resource representations, HTTP methods (their idempotency and safety) and status codes. Once the plan is created, we move to compiling the OpenAPI specification. The documentation is rendered automatically as we move along. We cover all CRUD operations to manage a sample Product catalog in an online store. We also deal with pagination and security (authentication and authorization). Finally, we auto generate the code from the specification in multiple languages, like Java, Python, JavaScript and Go. Then we showcase how we can customize the auto generated code. We use two examples: Java Spring Boot and Python Flask. GitHub repository: https://github.com/marcolenzo/rest-api-tutorial OpenAPI Specification: https://spec.openapis.org/oas/v3.0.3 RFC 9110 HTTP Semantics: https://www.rfc-editor.org/rfc/rfc9110.html Connect with me: LinkedIn: https://www.linkedin.com/in/marcolenzo/ Twitter: https://twitter.com/marco_lenzo #softwaredevelopment #softwarearchitecture #restapi

In this tutorial, we will learn how to design and implement a REST API using an API-first approach. That means we start from designing and...

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