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.
- AIEN
AI Production Pitfalls: Common Missteps in Model Predictions and Outputs
Master the pitfalls in AI model predictions to excel in interviews and real-world applications.
- Kubernetes Deployment StrategiesEN
Kubernetes Deployment Strategies: Avoiding Downtime During Updates
Learn how to choose the right Kubernetes deployment strategy to ensure zero downtime during application updates.
- Kubernetes ArchitectureEN
Mastering Kubernetes Architecture: Understanding Sidecar Containers
Explore sidecar containers in Kubernetes, essential for modern app deployment, and avoid common pitfalls in interviews and production.
- JavaScript this BindingEN
JavaScript this Binding in React: what breaks and why
Understanding JavaScript context is crucial for managing state and behavior in React, especially when using classes and hooks.
- SQLEN
SQL DELETE vs. Querying with COUNT: Common Pitfalls in Interviews
Mastering SQL DELETE and COUNT can make or break your technical interview. Understand common traps to ace your next test.
- Mobile DevelopmentEN
Optimizing React Native Applications: Memory Management and Performance
Learn effective strategies for enhancing performance in React Native, focusing on memory management and lazy loading techniques.
- HTTPEN
HTTP in Depth: Crucial Insights for Interviews and Real-World Applications
Master HTTP concepts to ace interviews and troubleshoot production issues effectively.
- CloudEN
Navigating the Cloud: Strategy Over Definition
Mastering the nuances of cloud computing can set you apart in interviews and real-world applications.
- CI/CDEN
CI/CD in Practice: Navigating Challenges and Real-World Applications
Master CI/CD pitfalls to excel in interviews and deliver reliable applications in production.
- ReactEN
React State Management: the trade-offs interviewers probe
Master state management in React to ace interviews and avoid production issues.
- React NativeEN
React Native Performance: the hidden costs of the bridge
Explore critical performance trade-offs in React Native to excel in interviews and optimize your apps effectively.
- Data StructuresEN
Data Structures: The Interview Trap You Didn’t See Coming
Master data structures to ace interviews and prevent production failures.
- KubernetesEN
State Management in Kubernetes: The Role of etcd and the Implications of Pod Behavior
Understand etcd's role and Pod behavior during deployments to excel in Kubernetes-related interviews and production work.
- DockerEN
Docker in Microservices: Beyond Containers in Production
Harnessing Docker's full potential is crucial for efficient microservices architecture and effective troubleshooting.
- React KeysEN
React Keys: The Hidden Impact on Re-renders and Component Identity
Understand how React keys affect reconciliation and avoid common pitfalls in rendering lists.
- RedisEN
Redis as a Cache: Navigating Common Pitfalls and Performance Implications
Master Redis caching strategies to ace your next technical interview and enhance your production efficiency.
- PostgreSQLEN
Mastering PostgreSQL Indexes: Avoiding the Pitfalls
Understand PostgreSQL indexes to ace your interviews and ensure production stability.
- HTMLEN
Semantic HTML: more than just tags
Learn how semantic HTML improves accessibility and SEO, unlocking better code practices for interviews and production.
- ReduxEN
Redux in React Native: Avoiding Common Pitfalls and Interview Traps
Learn how to effectively use Redux in React Native and avoid common interview pitfalls with practical insights and examples.
- ImagesEN
Lazy Loading Images: Optimizing Mobile Performance
Understand lazy loading for images to improve app performance and impress in technical interviews.
- LinuxEN
Shebangs and Permissions: Navigating the Common Pitfalls in Linux Interviews
Master Linux shebangs and permissions to impress in interviews and avoid production errors.
- GraphQLEN
GraphQL Resolvers: The Hidden Complexity Behind Query Responses
Understanding resolvers is crucial for efficient GraphQL implementations, impacting both performance and maintainability in production.
- Next.jsEN
Next.js SSG vs SSR: choosing without shipping a bug
Get clarity on when to use Static Generation vs. Server-Side Rendering in Next.js and avoid common interview traps.
- TypeScriptEN
TypeScript: Balancing Strict Types with Developer Productivity
Master TypeScript's type system to boost productivity while avoiding common pitfalls.