# Nexo Engineering Handbook

Referência técnica da plataforma Nexo. Tudo que um engenheiro precisa para entender, construir e operar o sistema.

### Arquitetura

<table data-view="cards"><thead><tr><th></th><th></th><th data-hidden data-card-cover data-type="files"></th><th data-hidden></th><th data-hidden data-card-target data-type="content-ref"></th></tr></thead><tbody><tr><td><strong>Visão Geral</strong></td><td>Stack, princípios, estrutura de pastas</td><td></td><td></td><td><a href="/pages/7FvWQMF0kTK7HGhlQfmo">/pages/7FvWQMF0kTK7HGhlQfmo</a></td></tr><tr><td><strong>Service Layer</strong></td><td>Arquitetura em camadas com diagramas</td><td></td><td></td><td><a href="/pages/QPzbTvC6XsT5gERiU43E">/pages/QPzbTvC6XsT5gERiU43E</a></td></tr><tr><td><strong>Mapa da Arquitetura</strong></td><td>Modelo de dados, fluxo de auth, ciclo de vida da request</td><td></td><td></td><td><a href="/pages/rSkGRP2Kn8C2BxhOLYpY">/pages/rSkGRP2Kn8C2BxhOLYpY</a></td></tr></tbody></table>

### Decisões

<table data-view="cards"><thead><tr><th></th><th></th><th data-hidden data-card-cover data-type="files"></th><th data-hidden></th><th data-hidden data-card-target data-type="content-ref"></th></tr></thead><tbody><tr><td><strong>ADR-001</strong></td><td>Redis Cache-Aside com armazenamento de DTO</td><td></td><td></td><td><a href="/pages/EPuww69A4UOrpDdUF06A">/pages/EPuww69A4UOrpDdUF06A</a></td></tr><tr><td><strong>ADR-002</strong></td><td>Redis Sentinel ao invés de Cluster</td><td></td><td></td><td><a href="/pages/WiHCCW416rhOcWWcS3zz">/pages/WiHCCW416rhOcWWcS3zz</a></td></tr><tr><td><strong>ADR-003</strong></td><td>SOPS + age para Secrets</td><td></td><td></td><td><a href="/pages/L5a96qXsT1pbr9jGsque">/pages/L5a96qXsT1pbr9jGsque</a></td></tr><tr><td><strong>ADR-004</strong></td><td>Tipos do Prisma na fronteira Repository–Service</td><td></td><td></td><td><a href="/pages/cFvg1QeEZ685kKNCCgWp">/pages/cFvg1QeEZ685kKNCCgWp</a></td></tr></tbody></table>

### Infraestrutura

<table data-view="cards"><thead><tr><th></th><th></th><th data-hidden data-card-cover data-type="files"></th><th data-hidden></th><th data-hidden data-card-target data-type="content-ref"></th></tr></thead><tbody><tr><td><strong>Arquitetura de Infraestrutura</strong></td><td>Containers, volumes, rede</td><td></td><td></td><td><a href="/pages/usX03wwdEPzqRxC2dvxq">/pages/usX03wwdEPzqRxC2dvxq</a></td></tr><tr><td><strong>Deploy</strong></td><td>Pipeline CI/CD, fluxo de deploy</td><td></td><td></td><td><a href="/pages/Ash0t8GT7hfAG34C4xLY">/pages/Ash0t8GT7hfAG34C4xLY</a></td></tr><tr><td><strong>Rede</strong></td><td>Rede Docker, portas, DNS</td><td></td><td></td><td><a href="/pages/KYkJGuQgODOKVwjME6Xe">/pages/KYkJGuQgODOKVwjME6Xe</a></td></tr></tbody></table>

### Segurança

<table data-view="cards"><thead><tr><th></th><th></th><th data-hidden data-card-cover data-type="files"></th><th data-hidden></th><th data-hidden data-card-target data-type="content-ref"></th></tr></thead><tbody><tr><td><strong>Modelo de Segurança</strong></td><td>Autenticação, gerenciamento de sessão</td><td></td><td></td><td><a href="/pages/1epwCft2z1pyy9ei3OkH">/pages/1epwCft2z1pyy9ei3OkH</a></td></tr><tr><td><strong>RBAC</strong></td><td>Roles, permissões, enforcement</td><td></td><td></td><td><a href="/pages/hwPWt7ByRqWWm7Pmndu3">/pages/hwPWt7ByRqWWm7Pmndu3</a></td></tr><tr><td><strong>Gerenciamento de Secrets</strong></td><td>Workflow SOPS + age</td><td></td><td></td><td><a href="/pages/DWwPK4wCnlLYUb0ajZdJ">/pages/DWwPK4wCnlLYUb0ajZdJ</a></td></tr></tbody></table>


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