# Release Checklist - Lista de Verificación para Despliegues

## Pre-Release (1-2 semanas antes)

### Planning y Preparación
- [ ] **Release plan definido** con fechas y responsables
- [ ] **Features completadas** y mergeadas a branch principal
- [ ] **Code freeze** establecido para la versión
- [ ] **Comunicación** enviada a stakeholders sobre el release

### Testing y Quality Assurance
- [ ] **Unit tests** ejecutados con éxito (cobertura mínima 80%)
- [ ] **Integration tests** pasando completamente
- [ ] **E2E tests** ejecutados en ambiente de staging
- [ ] **Performance tests** completados sin degradación
- [ ] **Security scan** ejecutado sin vulnerabilidades críticas
- [ ] **Load testing** realizado con tráfico esperado

### Documentación
- [ ] **Release notes** preparadas con cambios y breaking changes
- [ ] **API documentation** actualizada si aplica
- [ ] **User documentation** actualizada
- [ ] **Deployment guide** revisado y actualizado
- [ ] **Rollback procedures** documentados

## Release Day

### Pre-Deployment
- [ ] **Backup completo** de producción realizado
- [ ] **Database migrations** probadas en staging
- [ ] **Feature flags** configurados apropiadamente
- [ ] **Monitoring** configurado para el nuevo release
- [ ] **Team disponible** para troubleshooting

### Deployment Process
- [ ] **Maintenance window** comunicado a usuarios
- [ ] **Blue-green deployment** o estrategia similar ejecutada
- [ ] **Database migrations** aplicadas exitosamente
- [ ] **Static assets** desplegados (CSS, JS, imágenes)
- [ ] **Configuration files** actualizados en producción
- [ ] **Services restarted** en orden correcto

### Health Checks
- [ ] **Application health** endpoints respondiendo OK
- [ ] **Database connectivity** verificada
- [ ] **External integrations** funcionando
- [ ] **Critical user flows** probados manualmente
- [ ] **Performance metrics** dentro de rangos normales
- [ ] **Error rates** no incrementadas

## Post-Release (primeras 2-4 horas)

### Monitoring y Observabilidad
- [ ] **Application logs** monitoreados sin errores críticos
- [ ] **System metrics** (CPU, memory, disk) estables
- [ ] **Response times** dentro de SLAs establecidos
- [ ] **Error tracking** no muestra incrementos anómalos
- [ ] **User activity** patterns normales

### Validation
- [ ] **Smoke tests** ejecutados exitosamente
- [ ] **Key features** validadas por QA
- [ ] **Database integrity** verificada
- [ ] **Scheduled jobs** ejecutándose correctamente
- [ ] **Third-party integrations** funcionando

### Communication
- [ ] **Release completed** comunicado a stakeholders
- [ ] **Status page** actualizado si aplica
- [ ] **Support team** informado sobre cambios
- [ ] **Customer support** preparado para posibles issues

## Post-Release (siguientes días)

### Monitoring Continuo
- [ ] **Daily metrics** revisados por 3 días
- [ ] **User feedback** recolectado y analizado
- [ ] **Performance trends** monitoreados
- [ ] **Error patterns** identificados y resueltos

### Follow-up
- [ ] **Hotfixes** desplegados si son necesarios
- [ ] **Retrospective** agendada para mejoras del proceso
- [ ] **Lessons learned** documentadas
- [ ] **Next release** planificación iniciada

## Rollback Procedures

### Criterios de Rollback
- Error rate > 5% por más de 15 minutos
- Response time > 2x baseline por más de 10 minutos
- Critical functionality no disponible
- Data corruption detectada
- Security vulnerability expuesta

### Rollback Steps
1. **Comunicar** decisión de rollback al equipo
2. **Revertir** application deployment
3. **Rollback** database migrations si es seguro
4. **Verificar** application health post-rollback
5. **Comunicar** status a stakeholders
6. **Investigar** root cause del problema

## Release Types

### Major Release (x.0.0)
- Breaking changes incluidos
- Marketing coordination requerida
- Extended testing period
- Beta testing con usuarios seleccionados
- Comprehensive documentation updates

### Minor Release (x.y.0)
- New features added
- Backward compatibility maintained
- Standard testing procedures
- Regular communication to users

### Patch Release (x.y.z)
- Bug fixes only
- Fast-track testing possible
- Minimal documentation changes
- Can be deployed on-demand

## Emergency Hotfix Procedure

### Immediate Actions
- [ ] **Critical bug** confirmed y reproducido
- [ ] **Hotfix branch** creado desde producción
- [ ] **Minimal fix** implementado y probado
- [ ] **Code review** expedited por senior developer
- [ ] **Emergency deployment** ejecutado
- [ ] **Validation** inmediata post-deployment
- [ ] **Communication** a equipo y stakeholders
- [ ] **Post-mortem** agendado

## Tools y Automation

### Deployment Tools
- CI/CD pipeline configurado
- Automated testing integration
- Database migration tools
- Infrastructure as Code (Terraform, CloudFormation)
- Container orchestration (Kubernetes, Docker Swarm)

### Monitoring Tools
- Application Performance Monitoring (APM)
- Log aggregation and analysis
- Error tracking (Sentry, Rollbar)
- Uptime monitoring
- Business metrics dashboards

### Communication Tools
- Slack/Teams notifications
- Status page automation
- Email notifications for stakeholders
- PagerDuty for critical alerts

## Checklist por Ambiente

### Staging Deployment
- [ ] Code deployed from release branch
- [ ] Database migrations executed
- [ ] Configuration updated
- [ ] Smoke tests passed
- [ ] Performance baseline established
- [ ] QA sign-off received

### Production Deployment
- [ ] All staging checks completed
- [ ] Backup verified
- [ ] Blue-green deployment executed
- [ ] Health checks passed
- [ ] Monitoring activated
- [ ] Rollback plan ready

## Success Metrics

### Technical Metrics
- Zero critical bugs in first 24 hours
- Response time within 10% of baseline
- Error rate below 0.5%
- 99.9% uptime maintained

### Business Metrics
- User satisfaction maintained
- Key business KPIs not negatively impacted
- Customer support tickets not increased
- Revenue impact neutral or positive