Next-Gen High-Frequency Payment Processing Core
Apex Financial processes over $40B in annual volume across 18 currencies. Their legacy monolith struggled to handle peak black-swan trading volume spikes and incurred excessive settlement latency.
The Business & Technical Challenge
Sub-optimal throughput capped at 1,200 TPS, occasional database lock contention, and 4.2-second average transaction settlement latency resulting in high abandoned checkout rates and SLA penalties.
The Engineered Architecture & Solution
CoralSwift designed an event-driven distributed payment core leveraging CQRS, distributed in-memory caching, and an active-active multi-region database topology on PostgreSQL and Apache Kafka.
Implementation & Zero-Downtime Deployment
Migrated 14 distinct payment channels in zero-downtime canary waves. Implemented cryptographic idempotency keys to guarantee exactly-once transaction processing, and sub-millisecond fraud scoring pipelines.
Technology & Infrastructure Stack
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