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244 lines
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244 lines
10 KiB
--- |
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order: 4 |
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briefTitle: 'Backend' |
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briefDescription: 'Test, rate and improve your Backend knowledge with these questions.' |
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title: '50 Popular Backend Developer Interview Questions and Answers' |
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description: 'Test, rate and improve your Backend knowledge with these questions.' |
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authorId: 'fernando' |
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isNew: false |
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date: 2024-05-24 |
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seo: |
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title: '50 Popular Backend Developer Interview Questions and Answers' |
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description: 'Nail your backend developer interview with these 50 popularly asked questions and answers. Test your knowledge with our quiz cards!' |
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keywords: |
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- 'backend quiz' |
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- 'backend questions' |
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- 'backend interview questions' |
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- 'backend interview' |
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- 'backend test' |
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sitemap: |
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priority: 1 |
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changefreq: 'monthly' |
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questions: |
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- question: Explain what an API endpoint is? |
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answer: api-endpoint.md |
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topics: |
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- 'Beginner' |
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- question: Can you explain the difference between SQL and NoSQL databases? |
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answer: sql-vs-nosql.md |
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topics: |
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- 'Beginner' |
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- question: What is a RESTful API, and what are its core principles? |
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answer: rest-core-principles.md |
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topics: |
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- 'Beginner' |
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- question: Can you describe a typical HTTP request/response cycle? |
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answer: http-request-response-cycle.md |
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topics: |
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- 'Beginner' |
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- question: How would you handle file uploads in a web application? |
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answer: file-uploads.md |
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topics: |
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- 'Beginner' |
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- question: What kind of tests would you write for a new API endpoint? |
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answer: api-tests.md |
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topics: |
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- 'Beginner' |
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- question: Describe how session management works in web applications |
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answer: session-management.md |
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topics: |
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- 'Beginner' |
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- question: How do you approach API versioning in your projects? |
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answer: api-versioning.md |
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topics: |
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- 'Beginner' |
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- question: How do you protect a server from SQL injection attacks? |
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answer: protect-sql-injection.md |
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topics: |
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- 'Beginner' |
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- question: Explain the concept of statelessness in HTTP and how it impacts backend services |
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answer: statelessness-http.md |
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topics: |
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- 'Beginner' |
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- question: What is containerization, and how does it benefit backend development? |
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answer: containerization.md |
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topics: |
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- 'Beginner' |
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- question: What measures would you take to secure a newly developed API? |
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answer: secure-api.md |
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topics: |
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- 'Beginner' |
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- question: How would you scale a backend application during a traffic surge? |
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answer: scale-backend.md |
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topics: |
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- 'Beginner' |
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- question: What tools and techniques do you use for debugging a backend application? |
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answer: debugging-backend.md |
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topics: |
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- 'Beginner' |
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- question: How do you ensure your backend code is maintainable and easy to understand? |
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answer: maintainable-code.md |
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topics: |
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- 'Beginner' |
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- question: Describe how you would implement a full-text search in a database |
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answer: fulltext-search.md |
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topics: |
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- 'Intermediate' |
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- question: How would you approach batch processing in a data-heavy backend application? |
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answer: batch-processing.md |
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topics: |
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- 'Intermediate' |
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- question: Can you explain the use and benefits of a message queue in a distributed system? |
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answer: message-queue.md |
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topics: |
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- 'Intermediate' |
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- question: What strategies would you use to manage database connections in a high-load scenario? |
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answer: db-connections.md |
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topics: |
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- 'Intermediate' |
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- question: How would you set up a continuous integration/continuous deployment (CI/CD) pipeline for backend services? |
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answer: ci-cd.md |
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topics: |
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- 'Intermediate' |
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- question: Can you describe a distributed caching strategy for a high-availability application? |
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answer: distributed-caching.md |
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topics: |
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- 'Intermediate' |
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- question: What methods can you use for managing background tasks in your applications? |
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answer: bg-tasks.md |
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topics: |
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- 'Intermediate' |
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- question: How do you handle data encryption and decryption in a privacy-focused application? |
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answer: data-encryption.md |
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topics: |
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- 'Intermediate' |
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- question: What are webhooks and how have you implemented them in past projects? |
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answer: webhooks.md |
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topics: |
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- 'Intermediate' |
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- question: What considerations must be taken into account for GDPR compliance in a backend system? |
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answer: gdpr-compliance.md |
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topics: |
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- 'Intermediate' |
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- question: Explain how you would deal with long-running processes in web requests |
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answer: long-running.md |
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topics: |
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- 'Intermediate' |
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- question: Discuss the implementation of rate limiting to protect APIs from abuse |
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answer: rate-limiting.md |
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topics: |
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- 'Intermediate' |
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- question: How do you instrument and monitor the performance of backend applications? |
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answer: instrument-monitor.md |
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topics: |
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- 'Intermediate' |
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- question: What are microservices, and how would you decompose a monolith into microservices? |
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answer: decompose-microservices.md |
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topics: |
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- 'Intermediate' |
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- question: How have you managed API dependencies in backend systems? |
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answer: api-dependencies.md |
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topics: |
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- 'Intermediate' |
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- question: Describe the concept of eventual consistency and its implications in backend systems |
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answer: eventual-consistency.md |
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topics: |
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- 'Intermediate' |
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- question: What is a reverse proxy, and how is it useful in backend development? |
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answer: reverse-proxy.md |
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topics: |
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- 'Intermediate' |
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- question: How would you handle session state in a load-balanced application environment? |
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answer: load-balanced-session.md |
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topics: |
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- 'Intermediate' |
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- question: What is database replication, and how can it be used for fault tolerance? |
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answer: fault-tolerance.md |
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topics: |
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- 'Advanced' |
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- question: Describe the use of blue-green deployment strategy in backend services |
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answer: blue-green-deployment.md |
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topics: |
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- 'Advanced' |
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- question: Can you explain the consistency models in distributed databases (e.g., CAP theorem)? |
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answer: cap-theorem.md |
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topics: |
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- 'Advanced' |
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- question: How do you manage schema migrations in a continuous delivery environment? |
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answer: schema-migrations.md |
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topics: |
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- 'Advanced' |
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- question: What strategies exist for handling idempotency in REST API design? |
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answer: idempotency.md |
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topics: |
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- 'Advanced' |
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- question: Describe the implementation of a single sign-on (SSO) solution |
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answer: sso.md |
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topics: |
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- 'Advanced' |
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- question: Explain how you would develop a backend system for handling IOT device data streams |
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answer: iot-streams.md |
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topics: |
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- 'Advanced' |
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- question: How would you architect a backend to support real-time data synchronization across devices? |
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answer: realtime-data-sync.md |
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topics: |
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- 'Advanced' |
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- question: Discuss the benefits and drawbacks of microservice architectures in backend systems |
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answer: benefits-drawbacks-microservices.md |
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topics: |
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- 'Advanced' |
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- question: How would you approach load testing a backend API? |
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answer: load-testing-api.md |
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topics: |
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- 'Advanced' |
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- question: Describe how you would implement a server-side cache eviction strategy |
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answer: cache-eviction.md |
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topics: |
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- 'Advanced' |
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- question: What are correlation IDs, and how can they be used for tracing requests across services? |
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answer: correlation-ids.md |
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topics: |
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- 'Advanced' |
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- question: Explain the difference between optimistic and pessimistic locking and when to use each |
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answer: optimistic-vs-pessimistic.md |
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topics: |
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- 'Advanced' |
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- question: What methods would you use to prevent deadlocks in database transactions? |
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answer: deadlock-db-transaction.md |
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topics: |
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- 'Advanced' |
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- question: How would you secure inter-service communication in a microservices architecture? |
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answer: secure-interservice.md |
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topics: |
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- 'Advanced' |
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- question: Discuss techniques for preventing and detecting data anomalies in large-scale systems |
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answer: anomaly-detection.md |
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topics: |
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- 'Advanced' |
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- question: Describe the process of creating a global, high-availability data storage solution for a multinational application |
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answer: high-available-storage.md |
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topics: |
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- 'Advanced' |
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--- |
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Getting ready for a software developer interview is never easy, especially if you’re new to the main tech stack of the company. This is why understanding the type of questions you might get asked during a technical interview is one of the keys to success. |
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In this article, we’ll go over 50 popular backend interview questions ordered by experience level. |
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For each question, we’ll provide some explanations, but feel free to further research each topic in detail, or go to the [Backend Roadmap](/backend) if you’re looking for a place to get started in your learning journey. |
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## Preparing for your Backend interview |
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Before we get started, it’s important to remember the following points when getting ready for your backend technical interview: |
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- Cover the basics of backend development. If you’re going for a web dev role, make sure you understand how client-server communication works. If you’re going for a dev tool development, understand the best practices around CLI development, etc. |
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- Practice coding, either by developing [your own mini-projects](/backend/developer-tools) or by using sites such as [LeetCode](https://leetcode.com), [HackerRank](https://hackerrank.com), and others. |
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- Consider reading up on software architecture; even if your role won’t be that of an architect, you’ll show understanding on a higher level by being able to discuss these topics. |
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- Make sure you have, at least, a basic understanding of most of the foundational layer of tools and practices for your role, such as version management (i.e. using Git), testing (as in unit testing at least), DevOps (including CI/CD pipeline, etc.), and anything else related to your role and the company. |
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- On a more general note, remember to read up on the company to be able to show interest and understanding of their business/product and also come prepared with a couple of questions of your own, showing you care about the role and the company. |
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With that said, let’s now focus on the list of backend interview questions that you may be asked when applying for a backend development role! |
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