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以2.2.1.BUILD-SNAPSHOT 为基准，适配Greenwich版本的Spring Cloud

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theonefx
2020-04-03 14:14:47 +08:00
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spring-cloud-alibaba-examples/sentinel-example/sentinel-core-example/readme.md
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@@ -193,14 +193,27 @@ Now ReadableDataSource type support 5 categories: `file`, `nacos`, `zk`, `apollo
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:
```
[Sentinel Starter] DataSource ds1-sentinel-file-datasource load 3 DegradeRule
[Sentinel Starter] DataSource ds2-sentinel-nacos-datasource load 2 FlowRule
```
## Warning
You should use `file` ReadableDataSource in a fatjar carefully or you may get error like this below
```
java.lang.RuntimeException: [Sentinel Starter] DataSource ds1 handle file [classpath: flowrule.json] error: class path resource [flowrule.json] cannot be resolved to absolute file path because it does not reside in the file system: jar:file:xxx/xxx.jar!/BOOT-INF/classes!/flowrule.jso
```
You could use absolute path when you use File datasource & fat jar.
It is recommended to use Nacos/Apollo/Zookeeper/Redis datasource to store rules.
https://github.com/alibaba/spring-cloud-alibaba/issues/428
## More
For more information about Sentinel, see [Sentinel Project](https://github.com/alibaba/Sentinel).
If you have any ideas or suggestions for Spring Cloud Sentinel starter, please don't hesitate to tell us by submitting github issues.
If you have any ideas or suggestions for Spring Cloud Sentinel starter, please don't hesitate to tell us by submitting github issues.