.
├── bin                                     # Binaries output directory
├── cmd                                     # Root of main
│   ├── grpc                                # GRPC main
│   └── http                                # HTTP main
├── config                                  # Configuration parser, structure and .yaml file
│   ├── config.go                           # Config file reader and parser 
│   ├── config.yaml                         # Config .yaml file
│   └── models.go                           # Config model structure
├── docs                                    # Swagger documentation
│   ├── docs.go                             # Document parser
│   ├── swagger.json                        # Auto generated swagger JSON file 
│   └── swagger.yaml                        # Auto generated swagger YAML file 
├── internal                                # Hexagonal - DDD Layer
│   └── auth                                # Auth Domain
│       ├── application                     # Application Layer
│       │   └── service                     # Usecase Layer
│       │   |   └── service.go              # Usecase file of current domain
│       │   └── jobs                        # Special Jobs Ticker or Crons
│       │       └── jobs.go                 # Special jobs runner by go Ticker with GoRoutines (like as Cron Jobs) (time specific) 
│       ├── domain                          # Domain Layer
│       │   └── entities                    # Models/Structures
│       │       └── entities.go             # Models/Structures file of current domain
│       │   └── errors                      # Custom Errors
│       │       └── errors.go               # Custom Errors file of current domain
│       │   └── ports                       # Ports / Interfaces
│       │       └── http_handler.go         # HTTP Handlers Interfaces file of current domain
│       │       └── postgresql_repo.go      # Postgresql Interfaces file of current domain
│       │       └── service.go              # Usecase Interface file of current domain
│       │   └── utils                       # Specific Utilities
│       │       └── utils.go                # Specific Utilities file of current domain
│       └── handler                         # Handler Layer 
│       │   └── grpc                        # GRPC Handlers
│       │       └── grpc                    # GRPC Handler file of current domain 
│       │   └── http                        # HTTP Handlers
│       │       └── handlers.go             # HTTP Handler file of current domain  
│       │       └── routes.go               # HTTP routes file of current domain  
│       ├── infrastructure                  # Infrastructure Layer
│       │   └── adapters                    # 3rd party integration adapters 
│       │       └── postgresql_repo         # PostgresqlRepository file of current domain
│       │   └── repository                  # Repositories 
│       │       └── postgresql_repo         # PostgresqlRepository file of current domain
├── pkg                                     # Custom packages for general common usage
├── proto                                   # GRPC proto directory
│   └── auth                                # Auth Domain
│       └── auth.pb.go                      # Auto generated domain specific proto functions
│       └── auth.proto                      # Domain specific generated domain specific proto functions
│       └── auth_grpc.pb.go                 # Auto generated domain specific proto functions
└── ...