Blackrock Senior Software Engineer Interview Questions and Answers

Springboot features
how to use property values
dependency injection
java core concepts
data structure questions

Arrange 1 's and 0's in a given array

Q1. Explain microservice pattern,
Ans. 
Microservice pattern is an architectural style where an application is composed of small, independent services that communicate with each other.
• Each service is responsible for a specific task or functionality

• Services communicate with each other through APIs

• Each service can be developed, deployed, and scaled independently

• Allows for greater flexibility, agility, and resilience

• Examples include Netflix, Amazon, and Uber
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Q2. Explain logging implementation in microservice 12 factor details
Ans. 
Logging in microservices follows 12 factor principles.
• Each microservice should log to stdout or stderr

• Logs should be treated as event streams and sent to a centralized log aggregator

• Logs should be structured data in a common format like JSON or syslog

• Logs should include contextual information like request ID, user ID, etc.

• Logs should be stored and rotated automatically

• Logs should be monitored for errors and anomalies
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Q3. Disadvantage of microservice
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Q1. Questions on jsp and unit tests
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Q2. How can millions of requests be effectively managed?
Ans. 
Millions of requests can be effectively managed through load balancing, caching, and scaling.
• Implementing load balancing to distribute requests evenly across multiple servers

• Utilizing caching mechanisms to store frequently accessed data and reduce response times

• Scaling infrastructure horizontally by adding more servers to handle increased traffic

• Using content delivery networks (CDNs) to cache and deliver content closer...read more
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Kafka can be used as a solution.

Q1. Salary discussion
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Q2. Notice period negotiations
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Q1. Coding problem was presented during the interview?
Ans. 
Solve a coding problem involving array manipulation and algorithm design.
• Understand the problem requirements clearly.

• Break down the problem into smaller parts.

• Consider edge cases and constraints.

• Optimize for time and space complexity.

• Test your solution with various inputs.
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Q1. SQL server scenario based question
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Coding skills dynamic programming

Q1. Coding skills dynamic programming
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Q1. Microservices spring boot
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Technical coding skills

Q1. About microservices and spring boot
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