.---------.             .---------.
    | clientA |             | clientB |
    |---------|             |---------|
         |                       |
         V                       V
.------------------------------------------.                   .---------------------------.
|                IRIS                      |                   |    consul                 |
|           http restful api               |------------------>|   use for global config &&|
|                                          |                   |   service discovery       |
|                                          |                   |                           |
.------------------------------------------.                   .---------------------------.
         |                     |                                          |             |
         |                     |        GET SERVICES && LOADBALANCE       |             |
         |       gRPC          | <----------------------------------------.             |
         |                     |                                                        |
         .---------------------.                                                        |
                   ↑                                                                   |
                   |                                                                    |
                   |                                                                    |
                   ↓                                                                   |
.-----------------------------------------.                                             |
|    single micro service ,eg:            |                                             |
|      UserService/relationService/       |        SERVICE REGISTER                     |
|      authService /captchaService        |---------------------------------------------.
|    and so on.                           |
|                                         |
.-----------------------------------------.
                    ↑
                    |
                    ↓
               .----------.
               |   redis  |
               |          |
               .----------.