Everest Engineering Lead Software Engineer Interview Questions and Answers

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Q1. Twitter design with effective image storage
Ans. 
Twitter can use cloud storage services like AWS S3 for effective image storage.
• Twitter can use a CDN to distribute images globally.

• Images can be compressed and optimized for faster loading.

• Twitter can implement lazy loading to improve page speed.

• Users can be given the option to upload images directly to cloud storage services like AWS S3.

• Twitter can use image recognition technology to automatically tag and categorize i
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Q1. Microservice testing support in Springboot and other ways
Ans. 
Springboot provides various testing tools for microservices
• SpringBootTest for integration testing

• MockMvc for testing REST endpoints

• MockBean for mocking dependencies

• TestRestTemplate for testing REST endpoints

• WireMock for testing external services

• JUnit and Mockito for unit testing

• Use Docker for testing in a containerized environment
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Q2. Logging and tracing in distributed application
Ans. 
Logging and tracing are essential for debugging and monitoring distributed applications.
• Use a centralized logging system to collect logs from all nodes in the distributed system.

• Include unique identifiers in log messages to enable tracing of requests across multiple nodes.

• Use log aggregation tools like ELK stack or Splunk to analyze and visualize logs.

• Consider using distributed tracing tools like Jaeger or Zipkin to tr...read more
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