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DB Interview questions

Position - Associate Developer
Package - 26LPA

1st Round 🔥
1. What are the new features introduced in Java 8.
https://www.baeldung.com/java-8-new-features

2. Sort a student class list based on the student age in descending order.
https://www.educative.io/answers/how-to-sort-a-list-of-user-defined-objects-in-java

3. Write a logic to detect a loop in linked list and remove the loop
https://www.google.com/amp/s/www.geeksforgeeks.org/detect-loop-in-a-linked-list/amp/

4. Design HashMap put method.
https://www.turing.com/kb/implementing-hashmap-in-java

5. How to divide a monolithic application to Microservice
https://martinfowler.com/articles/break-monolith-into-microservices.html

6. Why String is immutable
https://www.google.com/amp/s/www.geeksforgeeks.org/java-string-is-immutable-what-exactly-is-the-meaning/amp/

7. How Redis Works and what are the different caching strategies.
https://codedamn.com/news/backend/advanced-redis-caching-techniques

8. How to add a list in redis cache and how to access the data again
https://redis.io/glossary/lists-in-redis/

9. What are the design pattern spring boots internally use
https://www.baeldung.com/spring-framework-design-patterns

10. How spring Auto configuration features works
https://www.marcobehler.com/guides/spring-boot-autoconfiguration

11. How to enable hibernate caching
https://www.baeldung.com/hibernate-second-level-cache

12. Lazy loading vs Eager Loading
https://www.imperva.com/learn/performance/lazy-loading/

13. Asked me to improve one SQL query
https://developernation.net/blog/12-ways-to-optimize-sql-queries-in-database-management/



2nd Round 🔥
1. Implements a search engine, something like Google. Low Level Coding
https://medium.com/@maxi.gkd/building-a-search-engine-using-a-trie-data-structure-cb79475d8a3d

2. How Pulisher Subscribe modal works
https://www.geeksforgeeks.org/what-is-pub-sub/

3. How to restrict an API call to be called from users who have required roles and permission
https://www.baeldung.com/role-and-privilege-for-spring-security-registration

4. Request Scope in spring boot
https://www.baeldung.com/spring-bean-scopes#:~:text=The%20request%20scope%20creates%20a,for%20a%20particular%20WebSocket%20session.
5. How to exclude a dependency
https://www.baeldung.com/mvn-plugin-dependency-exclusion

6. How to pass JWT token in rest api call
https://www.toptal.com/spring/spring-security-tutorial

7. logic to execute a method after every one hour without using Cron job
https://stackoverflow.com/questions/10748212/how-to-call-function-every-hour-also-how-can-i-loop-this#:~:text=Create%20a%20Timer%20object%20and,timer.

while(1==1) {
    //Your code here
    try{
         Thread.sleep(3600000);
    }
    catch (Exception e) {}
}

8. Difference between scheduled and cached thread pool
https://www.linkedin.com/pulse/types-thread-pool-executors-aniket-nandan?utm_source=share&utm_medium=member_android&utm_campaign=share_via
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1. DevOps
http://openclassrooms.com/courses/7853556-discover-the-devops-methodology

2. CI/CD
http://simplilearn.com/free-ci-cd-online-training-course-skillup

3. Docker
http://cognitiveclass.ai/courses/docker-essentials

4. Kubernetes
http://simplilearn.com/learn-kubernetes-basics-free-course-skillup

5. GIT
http://simplilearn.com/learn-git-basics-skillup

6. GitHub
http://mygreatlearning.com/academy/learn-for-free/courses/github-tutorial-for-beginners

7. Linux
http://mygreatlearning.com/academy/learn-for-free/courses/linux-tutorial

8. Cloud Computing
http://cognitiveclass.ai/courses/introduction-to-cloud

9. AWS
http://openclassrooms.com/courses/7864796-discover-cloud-with-amazon-web-services

10. Azure
http://mygreatlearning.com/academy/learn-for-free/courses/microsoft-azure-essentials

11. AWS
http://openclassrooms.com/courses/7864796-discover-cloud-with-amazon-web-services

12. Azure
http://mygreatlearning.com/academy/learn-for-free/courses/microsoft-azure-essentials

13. Cloud Computing
http://cognitiveclass.ai/courses/introduction-to-cloud

14. Linux
http://mygreatlearning.com/academy/learn-for-free/courses/linux-tutorial

15. GCP
http://simplilearn.com/learn-google-cloud-platform-fundamentals-free-course-skillup

16. Serverless
http://mygreatlearning.com/academy/learn-for-free/courses/serverless-computing

17. Docker
https://cognitiveclass.ai/courses/docker-essentials

18. Kubernetes
http://simplilearn.com/learn-kubernetes-basics-free-course-skillup

19. CI/CD
http://simplilearn.com/free-ci-cd-online-training-course-skillup

20. Jenkins
http://mygreatlearning.com/academy/learn-for-free/courses/jenkins-tutorial

21. Puppet
http://simplilearn.com/free-course-to-learn-puppet-basics-skillup

22. Chef
http://simplilearn.com/chef-in-devops-basics-free-course-skillup

23. Ansible
http://simplilearn.com/learn-ansible-basics-free-course-skillup

24. Selenium
http://mygreatlearning.com/academy/learn-for-free/courses/selenium-basics

25. VirtualBox & vSphere
https://openclassrooms.com/en/courses/7163136-set-up-virtual-machines-using-virtualbox-and-vsphere
____

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