FusionCharts Interview Questions and Answers

Caching is the process of storing frequently accessed data in a temporary storage area to improve performance.

• Caching helps reduce the time it takes to access data by storing it in a closer, faster storage location.

• Examples of caching include browser caching, where web pages are stored locally to reduce load times, and database caching, where frequently accessed data is stored in memory for faster retrieval.

Javascript event loop manages the execution of multiple tasks in a single-threaded environment.

• Event loop continuously checks the call stack and task queue for tasks to execute.

• Tasks are executed in a non-blocking manner, allowing for asynchronous operations.

• Microtasks are executed before the next task in the event loop.

• Example: setTimeout() function adds a task to the task queue after a specified delay.