Marketplace / Fintech

SkillBridge Platform

SkillBridge is a high-performance multi-vendor marketplace designed to handle extreme transaction surges with zero downtime.

Repository

Problem Context

Inventory race conditions and database lock contention during surge traffic (50k+ concurrent). Monolithic bottlenecks causing downtime during peak product drops.

The Engineering Solution

Asymmetric Cache-Aside strategy for searches and the Redlock algorithm for distributed sync, ensuring zero inventory double-booking even under millisecond-level contention.

Lessons Learned

"Learning to implement distributed locks revealed the complexity of consensus in distributed systems. I learned to prioritize consistency in transactional modules."

Production Stack

Frontend

Flutter Mobile (BLoC state management)

Backend

Spring Boot Microservices

Database

PostgreSQL (Relational Persistence)

Caching

Redis Cluster (Redlock algorithm)

Infrastructure

Docker / AWS / Cloudflare

Engineering Metrics

99.9%Uptime

50k+Concurrent Sessions

300msAPI Response

6 CoreModules

Verified Results

99.9% uptime in simulation
0% inventory overlap incidents
Sub-500ms API response
Scalable microservice design