Highway is ServiceComb‘s private high-performance protocol, it’s suitable for the performance sensitive scenarios.
To use the Highway channel, add the following dependencies in the pom.xml file:
<dependency> <groupId>org.apache.servicecomb</groupId> <artifactId>transport-highway</artifactId> </dependency>
The Highway configuration items in the microservice.yaml file are described below:
Table 1-1 Highway configuration items
| Configuration Item | Default Value | Value Range | Required | Description | Remark |
|---|---|---|---|---|---|
| servicecomb.highway.address | 0.0.0.0:7070 | - | No | The address that the server listens | - |
| servicecomb.highway.server.thread-count | 1 | - | No | The number of server network threads | - |
| servicecomb.highway.client.thread-count | 1 | - | No | The max number of allowed client connections | - |
| servicecomb.highway.client.connection-pool-per-thread | 1 | - | No | The number of client network threads | - |
| servicecomb.request.timeout | 30000 | - | No | The request timeout duration | The same with the configuration of “REST over Vertx” |
| servicecomb.references.[servicename].transport | rest | No | The transport type of the request | The same with the configuration of “REST over Vertx” | |
| servicecomb.references.[servicename].version-rule | latest | - | No | The version of the requested instance. | The same with the configuration of “REST over Vertx” |
An example of the Highway configuration in the microservice.yaml:
servicecomb: highway: address: 0.0.0.0:7070