Fintech Platform: $5M ARR SaaS Scaling from 10K to 500K Users
Migrated a fintech monolith to production-grade microservices handling 500K users with 99.99% uptime.
The Challenge
Understanding the Problem
The legacy monolith was struggling to handle growth beyond 10K concurrent users. Database queries were slow, the team couldn't deploy independently, and there was no real-time data visibility for traders.
Our Approach
Structured Methodology
- Designed event-driven architecture with message queues (RabbitMQ)
- Implemented domain-driven design to identify microservice boundaries
- Created real-time dashboards with WebSocket connections
- Built multi-region deployment strategy with automatic failover
- Established DevOps practices with automated testing and monitoring
The Solution
What We Built
We deployed 8 independent microservices handling order processing, portfolio management, analytics, and user account services. Each service scales independently based on demand. The platform now handles 100K concurrent users with <200ms p99 latency.
Architecture Diagram
Available upon request
Results
Measurable Impact
10x
throughput increase
70%
latency reduction
40%
cost savings
Technology Stack
Project Timeline
6 months from kickoff to production launch
"Dastute completely transformed our infrastructure. From scaling limitations to handling 500K users seamlessly - their team's expertise was invaluable."
Sarah Chen
FinTech Innovations Inc.
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