1Silverbullet Platforms Interview Questions and Answers

Closures are functions that have access to variables from their containing scope even after the scope has closed.

• Closures allow for data encapsulation and privacy in JavaScript.

• They are commonly used in event handlers, callbacks, and modules.

• Example: A counter function using closures to maintain its state.

My favorite sorting mechanism is Quick Sort.

• Quick Sort is a divide-and-conquer algorithm that recursively divides the array into smaller subarrays.

• It has an average time complexity of O(n log n) and is efficient for large datasets.

• Example code snippet: function quickSort(arr) { if (arr.length <= 1) { return arr; } const pivot = arr[arr.length - 1]; const left = []; const right = []; for (let i = 0; i < arr.length - 1; i++) { if (arr[i] < pivot) { left.push(arr[i]); } else { r...read more

To handle high traffic in Node.js, use clustering, load balancing, caching, optimizing code, and scaling horizontally.

• Implement clustering to utilize multiple CPU cores efficiently.

• Use load balancing to distribute incoming requests across multiple servers.

• Implement caching to store frequently accessed data and reduce database load.

• Optimize code for performance by identifying and fixing bottlenecks.

• Scale horizontally by adding more servers to handle increased traffic.