Performance

Sub-Second Settlement Performance — Latency Engineering for Critical Financial Systems

RN

Raí Nunes

Senior Software Engineer

March 04, 20268 min read

When a company promises settlement in under 60 seconds, every millisecond of internal latency matters. Sub-second performance is not the result of late optimization — it's a consequence of architectural decisions made from day zero.

The Latency Budget

At Infracash, each operation has a latency budget distributed across 6 layers. The total internal budget is < 500ms, leaving margin for external rail latency.

Optimization Techniques

Aggressive connection pooling, compliance rule caching, and parallel processing where dependencies allow.

Measurement and Monitoring

Each layer reports latency via distributed metrics. Real-time dashboards show P50, P95, and P99 by layer, rail, and jurisdiction.


References: Cockroach Labs (2026), SystemDR (2025), Google SRE Book.

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