Tech interview concepts, explained
Short, focused articles on the concepts behind tech interview questions — the traps interviewers actually probe, with worked examples. See all topics we cover.
- React Forward RefEN
React Forward Ref: Mastering Component References for Cross-Component Communication
Learn how to effectively use React.forwardRef to manage refs in functional components, enhancing component reusability and communication.
- SEOEN
SEO best practices: avoiding common pitfalls in technical interviews
Mastering SEO best practices is crucial for interviews and real-world applications, especially in measuring and tracking web performance.
- UsabilityEN
Usability: The Critical Factors That Break User Experience
Master usability to enhance user experience and ace interviews about product lifecycle, marketing strategies, and market segmentation.
- Code QualityEN
Code Quality: The Red Flags in Production You Can't Ignore
Understanding code quality can prevent costly mistakes and improve long-term maintainability in your projects.
- User ExperienceEN
User Experience Design: Tackling Real-World Accessibility Challenges
Learn how to address critical user experience challenges in interviews and production, focusing on accessibility and user interactions.
- Custom Hook DependenciesEN
Custom Hook Dependencies: Avoiding Stale Closures in React
Master custom hook dependencies to prevent stale data issues and improve performance in React applications.
- React Suspense with Lazy LoadingEN
React Suspense with Lazy Loading: Handling Failures and Trade-Offs in Real Applications
Learn how to navigate React Suspense and Lazy Loading, focusing on failure handling and performance trade-offs prevalent in interviews and production.
- CSS-in-JS PerformanceEN
CSS-in-JS Performance: Avoiding Pitfalls in Rendering and Layout
Learn how to effectively navigate CSS-in-JS performance issues and interview concerns around rendering and layout.
- React StrictModeEN
React StrictMode: Uncovering Hidden Issues in Your Components
Learn how React StrictMode helps catch problems in components and prepares them for production.
- Lifecycle MethodsEN
Lifecycle Methods: Navigating Cleanup and Error Handling in React
Mastering React lifecycle methods can prevent runtime errors and improve component performance in your applications.
- Server-Side Rendering Trade-offsEN
Server-Side Rendering Trade-offs: Balancing User Experience and Performance
Explore the trade-offs of Server-Side Rendering, focusing on user experience, performance, and best use cases for developers.
- React Lazy LoadingEN
React Lazy Loading: Balancing Benefits and Pitfalls in Performance
Explore the nuances of React lazy loading to ace interviews and ensure efficient performance in production.
- Kubernetes Separation of ConcernsEN
Kubernetes Separation of Concerns: Mitigating Risks in Production Environments
Learn how effective separation in Kubernetes with namespaces and resource quotas mitigates risks and enhances security.
- MobileEN
TouchableOpacity and FlatList in React Native: Common Misunderstandings and Production Pitfalls
Master the nuances of TouchableOpacity and FlatList in React Native to ace interviews and avoid production bugs.
- Code Splitting for Web VitalsEN
Code Splitting for Web Vitals: Optimize Your App's Performance
Master code splitting strategies to enhance web application performance and improve Key Web Vitals metrics.
- CSS Modules RisksEN
CSS Modules Risks: Navigating Class Name Conflicts and Maintainability Issues
Understand the risks of using CSS Modules, like class name conflicts and maintainability challenges, to excel in interviews and production work.
- UI Transition ManagementEN
UI Transition Management: Avoiding Common Pitfalls in Web Applications
Master UI transition management to improve user experience and ace your next interview with practical insights and real-world examples.
- Code SnippetEN
Understanding Code Snippets: Common Interview Pitfalls and Best Practices
Mastering code snippets can help you avoid common pitfalls during coding interviews and improve your coding efficiency on the job.
- Dynamic Imports PerformanceEN
Dynamic Imports Performance: Balancing Benefits and Pitfalls in Large Applications
Dynamic imports can enhance performance and user experience, but missteps can lead to inefficiency and slower load times.
- CSS-in-JS Style MutationEN
CSS-in-JS Style Mutation: Avoiding Pitfalls in Dynamic Styling
Learn how to manage style mutations in CSS-in-JS to prevent common pitfalls in your React applications.
- APIEN
APIs in Software Development: Navigating Common Misconceptions and Key Concepts
Master the nuances of APIs to excel in interviews and build robust applications effectively.
- Monolithic Architecture DrawbacksEN
Monolithic Architecture Drawbacks: The Deployment Challenges You Need to Know
Explore the key drawbacks of monolithic architecture, including deployment issues and scaling challenges that can trip up developers.
- ReconciliationEN
Reconciliation in React: Navigating Update Strategies and Performance Trade-offs
Master React's reconciliation process to optimize rendering and component updates while acing interviews.
- Data StructureEN
Choosing the Right Data Structure: The Performance Gotchas You Can't Ignore
Mastering data structures can dramatically influence the performance and scalability of your application.