Anthony Lim
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Distributed Authentication System

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High-performance auth microservices handling 1M+ daily sessions with sub-200ms response

Led the migration from a monolithic authentication system to a modern microservices architecture using Go and Firebase Auth. The new system delivers 10x faster authentication while supporting massive scale and maintaining exceptional reliability.

Key Highlights

  • 1M+ daily active sessions
  • 200ms average auth time (down from 2s)
  • 99.99% uptime SLA
  • 10x performance improvement
  • Zero-downtime migration
  • Multi-factor authentication support

Technologies Used

Go
Firebase Auth
Kubernetes
PostgreSQL
Redis
gRPC
OAuth 2.0
JWT