FICO Senior Software Engineer Interview Questions and Answers

To improve web application performance, optimize code, use caching, minimize network requests. To identify memory leaks, use profiling tools, monitor memory usage.

• Optimize code by reducing unnecessary loops, improving algorithms

• Use caching to store frequently accessed data and reduce database calls

• Minimize network requests by combining multiple requests into one

• Use profiling tools like Chrome DevTools or VisualVM to id...read more

To resolve CORS issue between microservices and microfrontend, configure CORS headers and use a proxy server.

• Configure CORS headers on microservices to allow requests from microfrontend domain

• Use a proxy server to route requests from microfrontend to microservices

• Implement a reverse proxy like Nginx or Apache to handle CORS headers

JS is singlethreaded

• JavaScript is singlethreaded, meaning it can only execute one piece of code at a time

• This is because of the event loop in JavaScript which manages the execution of code

• However, JavaScript can still handle asynchronous operations using callbacks, promises, and async/await