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fangjian0423
2019-10-30 17:46:19 +08:00
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spring-cloud-alibaba-examples/sentinel-example/sentinel-core-example/readme.md
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@@ -15,7 +15,7 @@ Before we start the demo, let's learn how to connect Sentinel to a Spring Cloud
1. Add dependency spring-cloud-starter-alibaba-sentinel in the pom.xml file in your Spring Cloud project.
<dependency>
<groupId>org.springframework.cloud</groupId>
<groupId>com.alibaba.cloud</groupId>
<artifactId>spring-cloud-starter-alibaba-sentinel</artifactId>
</dependency>
@@ -108,7 +108,9 @@ The screenshot belows shows invoke success:
## Customize Flow Control Logic
1. When a URL resource is blocked by Sentinel, the default logic is return HTTP response "Blocked by Sentinel (flow limiting)".
* Flow control exception handle by default
When a URL resource is blocked by Sentinel, the default logic is return HTTP response "Blocked by Sentinel (flow limiting)".
If you want to customize your flow control logic, see the code below:
@@ -123,7 +125,9 @@ The screenshot belows shows invoke success:
WebCallbackManager.setUrlBlockHandler(new CustomUrlBlockHandler());
2. When a custom resource is blocked by Sentinel, the default logic is throw BlockException.
* Flow control exception handle by using `@SentinelResource`
When a custom resource is blocked by Sentinel, the default logic is throw BlockException.
If you want to customize your flow control logic, implement interface `SentinelExceptionHandler`, set @SentinelResource's blockHandler() and blockHandlerClass(). See the code below:
@@ -185,9 +189,9 @@ spring.cloud.sentinel.datasource.ds2.nacos.data-type=json
`ds1` and `ds2` means the name of ReadableDataSource, you can write whatever you want. The `file` and `nacos` after name `ds1` and `ds2` means the type of ReadableDataSource.
Now ReadableDataSource type support 4 categories: `file`, `nacos`, `zk` and `apollo`.
Now ReadableDataSource type support 5 categories: `file`, `nacos`, `zk`, `apollo` and `redis`.
If you want to use `nacos`, `zk` or `apollo` ReadableDataSource, you could add `sentinel-datasource-nacos`, `sentinel-datasource-zookeeper` or `sentinel-datasource-apollo` dependency.
If you want to use `nacos`, `zk`, `apollo` or `redis` ReadableDataSource, you could add `sentinel-datasource-nacos`, `sentinel-datasource-zookeeper`,`sentinel-datasource-apollo` or `sentinel-datasource-redis` dependency.
When ReadableDataSource load rule data successfully, console will print some logs: