Design Ads Click Counter System

Think about ads platform like Google/Meta. There are billions of ads clicks per day. Now we need to design a dashboard to visualize the ads performance. More specifically, you need to implement a service to return the number of ads clicks within a certain time frame...



Get one-to-one training from Google Facebook engineers

Top-notch Professionals

Learn from Facebook and Google senior engineers interviewed 100+ candidates.
Most recent interview questions and system design topics gathered from aonecode alumnus.
One-to-one online classes. Get feedbacks from real interviewers.

Customized Private Class

Already a coding expert? - Advance straight to hard interview topics of your interest.
New to the ground? - Develop basic coding skills with your own designated mentor.
Days before interview? - Focus on most important problems in target company question bank.