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TCS - Microservices Interview Questions for Java Developers
Upasana | May 25, 2019 | 1 min read | 3 views
Commonly asked Spring/Java Microservices Interview questions in TCS
Core Java
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What is volatile variable?
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What are key classes in java.util.concurrent package
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Explain internals of ConcurrentHashMap
Microservices Concepts
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Why do we need microservices architecture?
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How to handle distributed transaction in microservices?
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What is Saga pattern in microservices?
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What is Zipkin and Sleuth?
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What is an idempotent operation?
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What is eventual consistency?
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What are biggest advantages of microservices architecture?
Security
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How does OAuth2 works?
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Do we need to generate clientId and clientSecret for each microservices for handling security in inter-service communication.
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How Spring security works in microservice architecture?
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How to configure security at a Resource Server level.
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What is JWT?
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What kind of information should be put into JWT?
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What is a resource server
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How does resource server validates a given JWT token? Does it need to go to auth server each time a token comes?
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What is Token relay, how does it happen?
Inter service communication
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One service calls 4 other services and collects the response, how to handle this.
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How load balancing works in microservices?
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What is zuul? is it a load balancer?
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How does discovery client works?
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