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Fintech

High-Throughput Payment Gateway for GCC Market

Re-engineered a legacy payment processor to handle 10x traffic spikes during peak shopping seasons (Ramadan/White Friday) while maintaining <200ms latency.

ClientRegional Payment Provider
CategoryFintech
High-Throughput Payment Gateway for GCC Market

The Challenge

The existing system suffered from database locking during high concurrency, leading to failed transactions and 5-second response times during peak load.

Peak Throughput
1,500 tx/sec
Average Latency
140ms
Error Rate
0.01% reduction

The Technical Solution

We avoided the 'easy' path of templates and plugins, instead engineering a system built for scale and long-term maintainability.

Architecture

Moved from a monolithic synchronous architecture to an event-driven system using RabbitMQ for asynchronous transaction processing and Redis for distributed locking.

Tech Stack

Node.jsPostgreSQLRedisRabbitMQAWS EKS

Key Decisions

Event-Driven Processing

Decoupled payment validation from transaction recording to prevent database bottlenecks during peaks.

Read Replicas for Reporting

Separated transactional traffic from administrative reporting queries to eliminate lock contention.

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