Deloitte Fullstack Java Application Developer Interview Questions and Answers

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Q1. Do you know Caching ?
Ans. 
Caching is the process of storing data in a temporary location to reduce access time and improve performance.
• Caching helps in reducing the load on the server by storing frequently accessed data closer to the user.

• Examples of caching include browser caching, CDN caching, and database caching.

• Caching can be implemented at different levels such as application-level caching, database-level caching, and server-level caching
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Q2. Spring vs spring boot?
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Spring is a framework for building Java applications, while Spring Boot is a tool that simplifies the setup and configuration of Spring applications.
• Spring is a comprehensive framework that provides support for various Java technologies like JDBC, JPA, and REST.

• Spring Boot is an opinionated tool that aims to simplify the development process by providing defaults for configuration and dependencies.

• Spring Boot includes e...read more
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Q1. How do you use joins in spring boot?
Ans. 
Joins in Spring Boot are used to retrieve data from multiple tables in a database using relationships between them.
• Use @Query annotation with JPQL or native SQL to perform joins in Spring Boot repositories

• Specify the join condition in the query using ON keyword

• Use JOIN FETCH to eagerly fetch associated entities in a single query
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Q2. Experience in production?
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