api/ API interface application handlers
  |- controller/
  |- middleware/
  |_ routes.go
app/ Common directory (public methods, application initialization, public components, etc.)
cmd/ CLI command line application commands
  |_ cliapp/ command line application entry file (main)
config/ Application configuration directory (basic configuration plus various environment configurations)
model/  Data and logic code directory
  |- form/  Request form structure data definition, form validation configuration
  |- logic/ Logic processing
  |- mongo/ MongoDB data collection model definition
  |- mysql/ MySQL data form model definition
  |_ rds/   Redis data model definition
resource/   Non-code resources used by some projects (language files, view template files, etc.)
runtime/    Temporary file directory (file cache, log files, etc.)
static/     Static resource directory (js, css, etc.)
main.go     Web application entry file
Dockerfile  Dockerfile
Makefile    Has written some common shortcut commands to help package, build docker, generate documentation, run tests, etc.
...