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System Design Objective Questions and Answers

Test your skills with Java system design objective questions with answers and detailed explanations. Covers scalable Java architectures, Spring Boot microservices, concurrency, caching, messaging, reactive systems, resiliency patterns, cloud-native design, observability, and performance tuning.

This Java System Design quiz contains carefully curated objective questions with correct answers and clear explanations. It is designed for backend engineers, platform engineers, and architects to test your skills across scalable Java architectures, distributed systems, concurrency models, resiliency patterns, cloud-native deployments, and modern performance trade-offs.

Practice System Design MCQs with Detailed Explanations

Answer at least 12 questions to submit.

16.
Which deployment strategy minimizes downtime during Java service upgrades?
Medium
17.
Which approach best limits blast radius when a Java microservice fails?
High
18.
Which pattern improves throughput for batch writes in Java services interacting with databases?
Medium
19.
Which approach best handles bursty traffic in a Java API layer?
High
20.
Which observability signal is most useful to debug tail-latency issues in Java microservices?
Medium
21.
Which design improves scalability of real-time notifications in Java systems?
High
22.
Which data model best suits append-only event logs in Java-based platforms?
Medium
23.
Which strategy reduces cold start impact for Java services in containerized environments?
High
24.
Which API design choice improves backward compatibility in Java microservices?
Medium
25.
Which pattern best prevents duplicate processing in distributed Java schedulers?
High
26.
Which approach reduces memory pressure under high object churn in Java services?
High
27.
Which pattern ensures reliable delivery of side effects when a Java service writes to DB and emits events?
High
28.
Which approach improves multi-region read performance for Java APIs?
High
29.
Which design choice best supports schema evolution in Java event-driven systems?
High
30.
Which concurrency model reduces contention in high-write Java counters?
Medium
Answered: 0 / 15

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