10+ Interview Questions and Answers

Annotations like @Qualifier and @Transactional are used in Spring Boot for dependency injection and transaction management.

• Annotations like @Qualifier are used to specify which bean to inject when multiple beans of the same type are present.

• Annotations like @Transactional are used to mark a method as transactional, allowing for rollback in case of exceptions.

• Annotations like @Component, @Service, @Repository are used for component scanning and auto-wiring.

• Annotations like @Re...read more

Microservices are a software architectural style that structures an application as a collection of loosely coupled services.

• Each service is self-contained and can be developed, deployed, and scaled independently.

• Communication between services typically occurs over lightweight protocols like HTTP or messaging queues.

• Microservices allow for greater flexibility, scalability, and resilience compared to monolithic architectures.

• Examples of microservices patterns include API Gatewa...read more

Asynchronous APIs in Java can be created using @Qualifier annotation to specify which bean to inject when multiple beans of the same type are present.

• Use @Qualifier annotation along with @Autowired to specify the bean to be injected.

• For example, if there are multiple beans of the same type, use @Qualifier("beanName") to specify which bean to inject.

• This helps in resolving ambiguity when multiple beans of the same type are present in the application context.

I have generated an average of 50 leads per month.

• Generated an average of 50 leads per month

• Utilized various lead generation strategies such as cold calling, email campaigns, and networking events

• Collaborated with marketing team to create targeted lead generation campaigns

Communication between microservices is typically done through APIs or messaging systems.

• Microservices communicate with each other using APIs, such as REST or gRPC.

• Message brokers like Kafka or RabbitMQ are commonly used for asynchronous communication between microservices.

• Service mesh tools like Istio can help manage communication between microservices by handling service discovery, load balancing, and security.

• Event-driven architecture can be used for communication between m...read more

HTTP methods are used to indicate the desired action to be performed on a resource.

• GET - Retrieve data from a server

• POST - Submit data to be processed by a server

• PUT - Update a resource on the server

• DELETE - Remove a resource from the server

• PATCH - Partially update a resource on the server

Promises in JavaScript are a way to handle asynchronous operations. React is a JavaScript library for building user interfaces.

• Promises in JavaScript are used to handle asynchronous operations and avoid callback hell.

• React is a JavaScript library for building user interfaces, using a component-based approach.

• Components in React can be created using class components or functional components.

• To integrate an API and show the data in React, you can use the fetch API or libraries ...read more

Node.js is a JavaScript runtime built on Chrome's V8 JavaScript engine.

• Node.js allows developers to run JavaScript on the server-side.

• It is event-driven and non-blocking, making it efficient for handling large amounts of data.

• Node.js has a vast library of modules available through npm.

• It is commonly used for building scalable network applications, real-time applications, and APIs.

• Examples of companies using Node.js include Netflix, LinkedIn, and Walmart.

SOLID principles are a set of five design principles for writing maintainable and scalable code.

• S - Single Responsibility Principle: A class should have only one reason to change.

• O - Open/Closed Principle: Software entities should be open for extension but closed for modification.

• L - Liskov Substitution Principle: Subtypes should be substitutable for their base types.

• I - Interface Segregation Principle: Clients should not be forced to depend on interfaces they do not use.

• D - ...read more

Action filters are attributes that can be applied to controller actions to modify the way they execute.

• Action filters are used to perform tasks before or after an action method executes.

• They can be used to modify the result of an action method or to cancel the execution of an action method.

• Examples of action filters include Authorization filters, Exception filters, and Result filters.

Express refers to something that is communicated or conveyed quickly and efficiently.

• Express can refer to a mode of transportation that is fast and efficient, such as an express train or bus.

• In the context of communication, express can refer to conveying a message or idea clearly and succinctly.

• Express can also refer to a company or service that provides fast and efficient delivery of goods or services.

• In programming, Express is a popular web application framework for Node.js...read more

My sales strategy involves building strong relationships with clients, understanding their needs, and providing tailored solutions.

• Focus on building long-term relationships with clients

• Understand the client's needs and pain points

• Provide customized solutions to meet client's specific requirements

• Regularly follow up with clients to ensure satisfaction and identify new opportunities

• Utilize data and analytics to identify potential leads and target market segments