Monolithic Service

Forward#

Since go-zero integrates web/rpc, some friends in the community will ask me whether go-zero is positioned as a microservice framework. The answer is no. Although go-zero integrates many functions, you can use any one of them independently, or you can develop a single service.

It is not that every service must adopt the design of the microservice architecture.

Create greet service#

$ mkdir go-zero-demo
$ cd go-zero-demo
$ go mod init go-zero-demo
$ goctl api new greet
$ go mod tidy
Done.

Take a look at the structure of the greet service

$ cd greet
$ tree
.
├── etc
│   └── greet-api.yaml
├── go.mod
├── greet.api
├── greet.go
└── internal
├── config
│   └── config.go
├── handler
│   ├── greethandler.go
│   └── routes.go
├── logic
│   └── greetlogic.go
├── svc
│   └── servicecontext.go
└── types
└── types.go

It can be observed from the above directory structure that although the greet service is small, it has "all internal organs". Next, we can write business code in greetlogic.go.

Write logic#

$ vim greet/internal/logic/greetlogic.go
func (l *GreetLogic) Greet(req types.Request) (*types.Response, error) {
return &types.Response{
Message: "Hello go-zero",
}, nil
}

Start and access the service#

  • Start service

    $ cd greet
    $ go run greet.go -f etc/greet-api.yaml
    Starting server at 0.0.0.0:8888...
  • Access service

    $ curl -i -X GET http://localhost:8888/from/you
    HTTP/1.1 200 OK
    Content-Type: application/json
    Date: Sun, 07 Feb 2021 04:31:25 GMT
    Content-Length: 27
    {"message":"Hello go-zero"}

Source code#

greet source code

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