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By Alberto Leal The success of an API is measured by how fast and easy developers can integrate with that. In the micro-services environment, where each service has a well-defined responsibility, it's not enough to have a well designed API, it's necessary to establish a contract between the APIs, so the integration between them may be feasible. In this talk, I will go through a set of best practices that will help to design APIs and define a communication service contract. From skateboarder to runner, photographer to full stack developer, Alberto loves writing beautiful code at Globo.com, Brazil, the internet branch of the largest mass media group in South America. He works in an environment of micro services, with lots of Ruby, Rails, Python, Tornado Web Server, Nginx, Javascript and Java. Help us caption & translate this video! http://amara.org/v/FG1C/
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In the video titled "Designing the APIs for an Internal Set of Services," Alberto Leal shares insights into the effective design of APIs within a microservices architecture. He emphasizes the importance of not only well-designed APIs but also the crucial need for clear communication contracts between services to facilitate seamless integration. Leal presents key best practices for API design, particularly as they relate to enhancing developer experiences in an increasingly complex environment. **Key Points Discussed:** - **API Definition and Purpose:** Leal defines an API (Application Programming Interface) and highlights its role as the interface through which developers can interact with applications, emphasizing the significance of the interface aspect. - **Microservices Architecture Explained:** The concept of microservices is illustrated, describing applications as collections of small, loosely coupled services, each with a specific responsibility. This architecture permits independent development and deployment. - **Flexibility and Tool Usage:** The video advocates using the right tools for specific tasks, emphasizing that different technologies (like Ruby, Java, etc.) can be employed per service need, leading to a more maintainable and stable application. - **Developer-Centric Design:** Leal insists on treating developers as customers. He highlights the necessity for enjoyable API experiences and advocates building APIs with a conceptual model established through collaboration among various stakeholders. - **Common Language and Documentation:** He stresses the importance of establishing a common vocabulary and comprehensive documentation, including quick start guides and code samples. - **Error Handling and Support:** Effective error handling is outlined as critical for user understanding of API functionality. He expresses that clear and informative error messages are invaluable for developers. - **Versioning and Deployment:** Leal discusses API versioning, recommending support for at least one previous version to ease transitions for users. Furthermore, he outlines that deployment in microservices should follow clear protocols to accommodate dependencies between services and ensure stability. - **Testing Strategies:** The importance of contract testing and integration tests is emphasized to ensure that their services align with expectations before deployment. **Conclusions:** Alberto Leal's presentation provides an in-depth look at the imperative elements of API design and integration within a microservices architecture. The primary takeaways include the need for a developer-focused approach, the value of clear contracts between services, disciplined versioning practices, and effective communication strategies to enhance both developer experience and application maintainability.
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