Question 1

How do you choose between SQL (Relational) and NoSQL (Document/Key-Value) databases for a new application?

Accepted Answer

To answer this Backend Developer interview question effectively, focus on practical experience, clear communication, and structured frameworks. Practice this exact question with real-time feedback on PrepAI.

Question 2

Explain Redis caching strategies (Cache-Aside, Write-Through, Write-Behind) and eviction policies.

Accepted Answer

To answer this Backend Developer interview question effectively, focus on practical experience, clear communication, and structured frameworks. Practice this exact question with real-time feedback on PrepAI.

Question 3

How do you handle API rate limiting and prevent DDoS attacks at the application level?

Accepted Answer

To answer this Backend Developer interview question effectively, focus on practical experience, clear communication, and structured frameworks. Practice this exact question with real-time feedback on PrepAI.

Question 4

Explain the ACID properties in database transactions and how isolation levels prevent anomalies.

Accepted Answer

To answer this Backend Developer interview question effectively, focus on practical experience, clear communication, and structured frameworks. Practice this exact question with real-time feedback on PrepAI.

Question 5

How do message queues (Kafka, RabbitMQ) decouple distributed systems and ensure eventual consistency?

Accepted Answer

To answer this Backend Developer interview question effectively, focus on practical experience, clear communication, and structured frameworks. Practice this exact question with real-time feedback on PrepAI.

Question 6

Describe how authentication (OAuth 2.0, JWT, Sessions) works securely across microservices.

Accepted Answer

To answer this Backend Developer interview question effectively, focus on practical experience, clear communication, and structured frameworks. Practice this exact question with real-time feedback on PrepAI.

Question 7

What approaches do you take for API versioning and backward compatibility?

Accepted Answer

To answer this Backend Developer interview question effectively, focus on practical experience, clear communication, and structured frameworks. Practice this exact question with real-time feedback on PrepAI.

Top Backend Developer Interview Questions & Prep Guide

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Common Backend Developer Interview Questions

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Top Backend Developer Interview Questions & Prep Guide

Have a specific Job Description for a Backend Developer position?

Common Backend Developer Interview Questions

1How do you choose between SQL (Relational) and NoSQL (Document/Key-Value) databases for a new application?

2Explain Redis caching strategies (Cache-Aside, Write-Through, Write-Behind) and eviction policies.

3How do you handle API rate limiting and prevent DDoS attacks at the application level?

4Explain the ACID properties in database transactions and how isolation levels prevent anomalies.

5How do message queues (Kafka, RabbitMQ) decouple distributed systems and ensure eventual consistency?

6Describe how authentication (OAuth 2.0, JWT, Sessions) works securely across microservices.

7What approaches do you take for API versioning and backward compatibility?

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Explore Related Interview Guides