This document is structured as a 45-60 minute technical interview script or lecture. It flows from foundational concepts to advanced distributed systems patterns. Each section includes:
Design a large chat system for companies, similar to Slack. Notice to limit the scope and choose the most unique and critical components to discuss. Should avoid mention not critical part or the parts that you are not familiar with. Choose a coherent structure to describe. In each section, whenever …
Design and implement a multithreaded or asynchronous web crawler program that can crawl all web links under the same host starting from a specified URL.
Let’s put aside the topics of efficiency and scalability, focus on the MVP that works. Given a starter url, we will use request …
A collection of Andrew Koenig’s “Much Ado About Nothing” topics on Drdobbs.
The gist: referencing an array by indexes and by pointers are equivalent in C, but when using pointer reference, it hard to check array bounds. That’s why …