SpeakUp SD

Discord-inspired practice

2 independently authored System Design scenariosconnected to public Discord engineering references.

SpeakUp SD is an independent interview-practice product. It is not affiliated with, endorsed by, or sponsored by Discord.

  • Chat App

    Design the client-side architecture of a WhatsApp-style mobile messenger — connection handling, message state, offline s...

  • Chat Service

    Design the backend infrastructure behind a chat product — stateful connection servers, message storage, and group fan-ou...