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Task: Viral Growth


We're making the next Facebook. In order to make this the next big thing, we need to go viral!

We want to build an account management system, with referral/invitation functionality. To be specific:

  • Each user has a unique ID and a user name
  • Each user can generate an invitation code and share via their channels
  • On registration, the new user can provide an invitation code from other users
  • User can see how many new users he has directly invited joined

As the lead developer in the company, this feature of course goes to you. Make it happen!

PS: If you're curious why there's no password for users, because nothing is completely safe! So the product decided to go the other direction. There's no password to leak, if there's no password at all! :)


Microservice, Backend, Performance, Social Network


Problem Solving

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Nobody here yet, solve it now to get on the board!