Programa de Oferta
Architecture Review
System-level architecture review for security-critical distributed infrastructure with explicit failure and threat constraints.
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Issuer Authorization Platform Resilience Program
Anonymized engagement for a high-volume issuer authorization platform with strict latency and continuity requirements.
01
Contexto
A card authorization platform operating multi-region traffic experienced rising tail latency during dependency incidents and weak isolation in custody-adjacent signing workflows.
02
Risco técnico
- Authorization throughput degraded under partial dependency failure, with unstable p95 latency.
- Signing service fault boundaries were insufficiently isolated, raising compromise blast radius.
- Incident recovery lacked deterministic rollback controls across critical service groups.
03
Intervenção
- Re-architected request routing and fallback control to preserve throughput under dependency instability.
- Introduced stronger signing-boundary segregation and key lifecycle guardrails.
- Implemented deterministic rollback gates with release-level verification checks.
04
Resultado medido
- Service continuity improved during degraded-state operation.
- Critical signing paths retained control under incident pressure.
- Operational teams reduced restoration time for high-severity incidents.
| Métrica | Antes | Depois | Variação |
|---|---|---|---|
| Authorization latency p95 | 410 ms | 165 ms | -59.8% |
| Signing incident MTTR | 84 min | 19 min | -77.4% |
| Failed release rollback time | 43 min | 8 min | -81.4% |
| Control coverage | 62% | 96% | +34 pp |
05
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