Design Real-time Like Interation System

1. ❤️ Defining a like interaction system A like interaction system gives users a binary way to indicate whether they like a piece of content. Although the user sees only a button press, the backend must durably preserve each interaction, provide per-item like totals to millions of simultaneous readers, and allow every user to inspect their own liked-item history. Large social platforms such as Facebook, YouTube, and Instagram operate systems with this general shape at very…