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Persistent Software Engineer Interview Questions

The questions to prepare for a Persistent Software Engineer interview. Questions from real interview reports rank first. Updated weekly.

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Exception Handling in Distributed Systems
Medium

Assesses strategies for reliability, observability, and failure isolation across services.

distributed systems
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Service Discovery Between Microservices
Hard

Evaluates distributed systems design for reliable microservice communication.

service discoveryCommunicationmicroservices
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Explain ACID in Transaction SystemsEasy

Explain the four ACID properties and why they matter for reliable transaction processing in SQL systems.

acid propertiestransactionsdata integrity
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Understanding ACID Properties in Databases
Medium

Explain the ACID properties of database transactions and their importance.

Persistent
Clustered vs Non-Clustered Indexes
Medium

Explain how clustered and non-clustered indexes differ in storage, lookup behavior, and query performance.

JoinsData Wrangling
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Abstract Classes vs InterfacesEasy

Compare Java abstract classes and interfaces, including inheritance rules, shared behavior, and when each is the better design choice.

javaabstractionoop
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Strategy Pattern in a Project
Medium

Evaluates application of design patterns to solve changing behavior requirements.

javadesign patterns
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SQL vs NoSQL Trade-offs
Medium

Tests data modeling and storage choices based on consistency, scalability, and query patterns.

Trade-offsRisk AssessmentScope Management
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