Diagrammatic

Design a User Login and Authentication System — System Design Interview Practice

Design a secure authentication system with login, registration, and session management. Work through the requirements, architecture trade-offs, and an interactive design review.

Requirements and concepts to consider

  • User registration and loginRequirement
  • Password hashing and securityRequirement
  • Session managementRequirement
  • Multi-factor authentication (MFA)Requirement
  • Password reset functionalityRequirement
  • OAuth and social loginRequirement
  • Rate limiting for login attemptsRequirement
  • Handle millions of usersRequirement
  • securityConcept to explore
  • authenticationConcept to explore
  • sessionsConcept to explore
  • oauthConcept to explore
  • passwordsConcept to explore
Diagrammatic — system design practice and architecture review.