GraphQL provides efficient data fetching with client-specified queries, reducing over-fetching and enabling flexible API interactions in Angular applications. As the creator of CoreUI, a widely used open-source UI library, I’ve implemented GraphQL APIs in Angular projects throughout my 12 years of frontend development since 2014. The most straightforward approach is using Angular’s HttpClient to send GraphQL queries as POST requests with query strings and variables. This method enables precise data requirements, type-safe responses with TypeScript interfaces, and reduced network payload compared to REST APIs.

Mocking API requests in React tests ensures components render correctly with different data scenarios without making real network calls. With over 12 years of React development experience since 2014 and as the creator of CoreUI, I’ve written comprehensive test suites with extensive API mocking. Jest and Mock Service Worker (MSW) provide powerful tools to intercept and mock HTTP requests at different levels. This approach creates fast, reliable tests that don’t depend on external APIs or network availability.

Debouncing API calls in Vue prevents excessive requests during rapid user input like typing in search boxes. As the creator of CoreUI with over 12 years of Vue.js experience since 2014, I’ve implemented debouncing in countless search interfaces. Debouncing delays function execution until after a specified time has passed since the last invocation. This approach reduces API calls, improves performance, and provides better user experience.

Throttling API calls in Vue limits execution frequency for high-frequency events like scroll, resize, and mouse movement. With over 12 years of Vue.js experience since 2014 and as the creator of CoreUI, I’ve optimized performance with throttling in data-heavy dashboards. Throttling ensures a function executes at most once per specified time interval, unlike debouncing which delays execution. This approach prevents excessive API calls during continuous events while maintaining responsiveness.

Testing API endpoints ensures your REST API behaves correctly, returns proper status codes, and handles errors appropriately. As the creator of CoreUI with over 12 years of Node.js experience since 2014, I’ve built comprehensive API test suites for production services. Supertest is a library specifically designed for testing HTTP servers, allowing you to make requests and assert responses. This approach tests your Express routes without starting an actual server.

Building RESTful APIs is fundamental for modern web applications, providing a standardized way for clients to communicate with servers. As the creator of CoreUI with over 12 years of Node.js experience since 2014, I’ve architected numerous REST APIs serving millions of requests. Express is the most popular Node.js framework for building APIs, offering routing, middleware, and request/response handling. This approach follows REST conventions for creating scalable, maintainable backend services.

Proxy configuration in Angular development server forwards API requests to backend servers, bypassing CORS restrictions during local development. As the creator of CoreUI, a widely used open-source UI library, I’ve configured API proxies in Angular projects throughout my 11 years of Angular development. The most reliable approach is creating a proxy.conf.json file that maps request paths to target backend URLs. This method eliminates CORS errors in development while keeping production code unchanged.

Caching API data prevents redundant network requests, improves application performance, and provides better user experience during navigation. As the creator of CoreUI, a widely used open-source UI library, I’ve implemented data caching strategies in React applications throughout my 11 years of framework development. The most effective approach is creating a custom hook that stores responses in memory using a Map or localStorage for persistent caching. This method provides automatic cache management with minimal code changes in your components.

Fetching paginated data from APIs is essential for handling large datasets efficiently without overwhelming the client or server. As the creator of CoreUI, a widely used open-source UI library, I’ve implemented pagination in countless data-driven applications over my 11 years of React development. The most effective approach is using state to track the current page and useEffect to fetch data whenever the page changes. This method provides smooth pagination with proper loading states and error handling.

Using a dedicated email service like SendGrid provides better deliverability, analytics, and scalability compared to traditional SMTP servers. As the creator of CoreUI, a widely used open-source UI library, I’ve integrated SendGrid into enterprise Node.js applications throughout my 11 years of backend development. The most efficient approach is using the official @sendgrid/mail package with an API key for authentication. This method offers reliable email delivery with built-in retry logic and detailed sending statistics.