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Multi-Tenant API
Reference Multi-tenantCQRSMongoDB

Multi-Tenant API

REST API with database-per-tenant isolation using NestJS, MongoDB, and CQRS.

NestJS · MongoDB · TypeScript · CQRS · Docker

Implementer Implementador
Isolate tenant data completely while sharing application code and deployment. Aislar datos por tenant manteniendo código y despliegue compartidos.
Connection pooling per tenant, middleware routing, and CQRS read/write separation. Pool de conexiones por tenant, middleware de enrutamiento y separación CQRS lectura/escritura.

Technical stack

Layer-by-layer breakdown of subsystems, repositories, and production concerns.

Tenant resolution middleware Middleware de resolución de tenant

Extracts tenant identity from JWT, subdomain, or headers and attaches context to each request. Extrae identidad de tenant desde JWT, subdominio o headers y adjunta contexto a cada request.

NestJS middleware · JWT

  • Single codebase serves many isolated customers Un solo codebase sirve muchos clientes aislados

Database-per-tenant isolation Aislamiento database-per-tenant

Dynamic MongoDB connections pooled per tenant — no shared collections across customers. Conexiones MongoDB dinámicas con pool por tenant — sin colecciones compartidas entre clientes.

MongoDB · Connection pooling

  • Strong data boundaries for SaaS compliance Límites de datos fuertes para cumplimiento SaaS

CQRS command & query paths Rutas CQRS command y query

Separate handlers for writes vs reads — optimize each side without breaking the other. Handlers separados para escrituras vs lecturas — optimizar cada lado sin romper el otro.

CQRS · @nestjs/cqrs

  • Thin controllers delegating to use cases Controllers delgados delegando a use cases

Dockerized deployment Despliegue dockerizado

Compose-ready stack for local multi-tenant testing and repeatable environment setup. Stack listo para Compose con pruebas multitenant locales y entorno repetible.

Docker · Docker Compose

  • Reference implementation for tenant routing patterns Implementación de referencia para routing multitenant

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