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Simple In-Memory Caching for REST API Responses

Optimize web application performance by implementing a basic in-memory cache to store and retrieve API responses, reducing redundant network requests and improving load times.

Global Error Handling for Fetch API Requests

Implement a robust, centralized error handling strategy for all Fetch API calls using an interceptor-like pattern, ensuring consistent feedback, logging, and user notifications.

Polling an API for Asynchronous Job Completion Status

Efficiently monitor the status of long-running backend jobs by implementing a polling mechanism to periodically check an API endpoint until the job is completed or a timeout occurs.

Client-Side Utility for Batching Parallel API Requests

Optimize client-side performance by executing multiple independent API requests in parallel and efficiently collecting all their results using a single utility function and Promise.all().

Custom Hook: useLocalStorage for Persisting State

Learn to create a custom React hook, useLocalStorage, to effortlessly persist and retrieve component state in the browser's local storage across sessions.

Custom Hook: useDebounce for Delayed Value Updates

Implement a custom React hook, useDebounce, to delay updates of a value until a specified time has passed without further changes, perfect for search inputs.

Custom Hook: useClickOutside for Detecting External Clicks

Create a useClickOutside custom React hook to efficiently detect clicks that occur outside a referenced DOM element, ideal for closing modals or dropdowns.

Custom Hook: usePrevious for Accessing Previous State/Prop

Build a usePrevious React hook to store and retrieve the previous value of any state or prop, enabling comparisons and handling value changes over time.

Custom Hook: useIntersectionObserver for Lazy Loading/Visibility

Implement a custom React hook, useIntersectionObserver, to efficiently detect when an element enters or exits the viewport, enabling lazy loading or animations.

Implement Secure and HttpOnly Cookies in Express.js

Understand how to set HttpOnly, Secure, and SameSite attributes for cookies in Express.js to protect sensitive session data from XSS and CSRF attacks.

Implement Brute-Force Protection for Login Attempts

Secure user accounts by implementing a custom rate-limiting mechanism for failed login attempts to prevent brute-force attacks in Node.js.

Validate Password Strength with Combined Regex

Create a robust regex in JavaScript to enforce strong password policies, requiring a mix of specific character types and a minimum length.