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Ans. MVC is a Design Pattern that facilititates loose coupling by segregating responsibilities in a Web application
1. Controller receives the requests and handles overall control of the request
2. Model holds majority of the Business logic, and
3. View comprise of the view objects and GUI component
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Q5. Suppose we make an api call using multithreading, How would you design to make sure that we have received response for all threads before exiting the main thread ?
Ans. We can use HashMap for tracking response status for all threads. We can wait every n second by using Thread.sleep and exit the main thread only once we have received response for all threads.
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Q6. While working on a web application, you are informed that there is no new data in Database for last few hours ? How would you go about debugging this problem ?
Ans. Will look into access logs to see if web application is getting any traffic. If not , then will inform the server support team.
Will look into intermediary infrastructure , queues , streams etc to see if there is any choke or throttle there.
If there is any throttle at any point, would make request for either debugging the cause or increasing the infrastructure. For ex - increasing shards in Kinesis.
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Which of following class types in MVC holds Business logic ?
