Happiest Minds Technologies Module Lead Interview Questions, Process, and Tips

Sort a given string array in alphabetical order

• Use a sorting algorithm like quicksort or mergesort

• Consider using built-in sorting functions in programming languages

• Ensure the sorting is case-sensitive unless specified otherwise

Microservice design patterns are architectural patterns that help in designing and implementing microservices.

• Service Decomposition

• API Gateway

• Service Registry

• Circuit Breaker

• Saga Pattern

Event loop is a mechanism in programming that allows for asynchronous execution of code by managing the order of operations.

• Event loop is commonly used in JavaScript to handle asynchronous operations.

• It allows for non-blocking I/O operations by continuously checking the event queue for tasks to execute.

• Event loop ensures that tasks are executed in the order they were added to the queue.

• Example: setTimeout() function in...read more

Callback hell is a situation in asynchronous programming where multiple nested callbacks make the code difficult to read and maintain.

• Occurs when multiple asynchronous operations are nested within each other

• Leads to deeply nested code structure which is hard to understand and maintain

• Can be avoided by using promises, async/await, or libraries like async.js