#Data

15 questions

• How do you fetch data in React and avoid race conditions?React#dataMiddle›
• How do you fetch data in the App Router?Next.js#dataMiddle›
• What are Server Actions?Next.js#dataMiddle›
• How does HttpClient work?Angular#dataMiddle›
• What are HTTP interceptors?Angular#dataMiddle›
• How do you integrate a database (TypeORM/Prisma) with NestJS?NestJS#dataMiddle›
• How do you integrate a SQL database with FastAPI?FastAPI#dataMiddle›
• How do you access a database safely with PDO?PHP#dataMiddle›
• Design offline sync for a learning app: how do you resolve conflicts?System Design#scalingSenior›
• Design a high-volume event-tracking pipeline for reports and ML — which stack?System Design#scalingSenior›
• What is the database-per-service principle?Microservices#dataJunior›
• How do you manage data when each service has its own database?Microservices#dataMiddle›
• What is the saga pattern and how does orchestration differ from choreography?Microservices#patternsMiddle›
• How do you achieve consistency across services using eventual consistency, CQRS, and event sourcing?Microservices#dataSenior›
• How do you scale individual services and find performance bottlenecks?Microservices#resilienceSenior›