Senior Software Architect Interview Questions and Answers

Props are immutable data passed to components, while state is mutable data managed within a component.

• Props are read-only and cannot be modified by the child component. Example: <ChildComponent name='John' />.

• State is mutable and can be changed using setState. Example: this.setState({ count: this.state.count + 1 }).

• Props are used to pass data and event handlers down to child components, while state is used to manage component-specific data.

• Props can be used to configure a com...read more

Classes define object blueprints; interfaces specify contracts for behavior without implementation.

• Classes can contain fields (attributes) and methods (functions) with implementations.

• Interfaces can only declare methods (no implementation) and properties.

• A class can implement multiple interfaces, promoting multiple inheritance.

• Example: 'class Dog implements Animal { ... }' where Animal is an interface.

• Classes can have access modifiers (public, private), while interfaces are t...read more

Designing a system using microservices

• Identify the different components of the system and break them down into separate microservices

• Define the communication protocols and interfaces between the microservices

• Implement fault tolerance and scalability mechanisms

• Use containerization technologies like Docker to deploy and manage the microservices

• Implement service discovery and load balancing for efficient routing of requests

• Ensure data consistency and synchronization between micr...read more

Microservices architecture is a design approach where a complex application is broken down into smaller, loosely coupled services.

• Microservices promote scalability, flexibility, and maintainability.

• Each microservice focuses on a specific business capability.

• Communication between microservices can be achieved through APIs.

• Microservices can be developed and deployed independently.

• They can be implemented using various technologies like Docker, Kubernetes, etc.