10+ SRL Diagnostics Interview Questions and Answers

Profile registry is used to store user profiles and their preferences in a centralized location.

• Profile registry is used to manage user profiles and preferences in a centralized location

• It can be configured in a project by defining the schema for user profiles and preferences

• Profile registry can be accessed through APIs or SDKs

• It can be used to personalize user experience and provide targeted content

• Examples of profile registry include AWS Cognito, Firebase Authentication, an...read more

We can handle the situation by implementing fault tolerance mechanisms.

• Implementing circuit breakers to prevent cascading failures

• Using load balancers to redirect traffic to healthy instances

• Implementing retry mechanisms to handle temporary failures

• Using monitoring tools to detect and alert on failures

• Implementing graceful degradation to provide partial functionality

• Using backups or replicas to ensure high availability

We use @RestController, @RequestMapping, @Autowired, @Service, @Repository, @Transactional, @GetMapping, @PostMapping, @PutMapping, @DeleteMapping annotations in our Spring Boot project.

• @RestController - used to define RESTful web services

• @RequestMapping - used to map HTTP requests to handler methods

• @Autowired - used for automatic dependency injection

• @Service - used to define a service layer component

• @Repository - used to define a DAO component

• @Transactional - used to define ...read more

Microservices offer benefits such as scalability, flexibility, and easier maintenance.

• Scalability: Microservices can be scaled independently, allowing for better resource utilization.

• Flexibility: Microservices can be developed and deployed independently, allowing for faster iteration and innovation.

• Easier maintenance: Microservices are smaller and more focused, making it easier to identify and fix issues.

• Improved fault isolation: If one microservice fails, it does not affect ...read more

A hash map is a data structure that uses a hash function to map keys to values in constant time.

• Hash map uses an array to store key-value pairs

• The hash function is used to convert the key into an index of the array

• Collisions occur when two keys map to the same index, which is resolved using chaining or open addressing

• Retrieving a value from a hash map involves computing the hash of the key and then looking up the corresponding index in the array

• Inserting a new key-value pair ...read more

Spring Data JPA simplifies the implementation of data access layer in Spring applications.

• Provides a framework for easily creating repositories and queries

• Reduces boilerplate code for data access layer

• Supports pagination and sorting of data

• Integrates with Spring's transaction management

• Example: @Repository interface UserRepository extends JpaRepository {}

Spring is a framework while Spring Boot is an extension of Spring.

• Spring Boot provides auto-configuration and embedded servers.

• Spring Boot reduces boilerplate code and simplifies application setup.

• Spring Boot is opinionated and provides defaults for configuration.

• Spring Boot is ideal for microservices and standalone applications.

• Spring is more flexible and customizable than Spring Boot.

Concurrent Hash Map is a thread-safe implementation of a hash map.

• It allows multiple threads to access and modify the map concurrently.

• It uses a technique called lock striping to achieve high concurrency.

• It is part of the java.util.concurrent package in Java.

• Example: ConcurrentHashMap in Java.

Yes, I have configured service registry.

• I have experience with service registry tools like Consul and Eureka.

• I have configured service registry for microservices architecture.

• I have implemented service discovery and load balancing using service registry.

• I have used service registry to manage service endpoints and metadata.

Spring Boot is a framework that simplifies the development of Java applications by providing pre-configured settings and dependencies.

• Spring Boot uses an embedded server to run applications.

• It provides auto-configuration for commonly used libraries and frameworks.

• Spring Boot uses Spring Framework's core features like Inversion of Control (IoC) and Aspect Oriented Programming (AOP).

• It uses annotations to configure and customize applications.

• Spring Boot applications can be pack...read more