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                ## 規則管理及推送 | 推送模式 | 說明 | 優點 | 缺點 | | :-: | :-- | :-- | :-- | |Push 模式|擴展讀數據源(ReadableDataSource),規則中心統一推送,客戶端通過注冊監聽器的方式時刻監聽變化,比如使用 Nacos、Zookeeper 等配置中心。這種方式有更好的實時性和一致性保證。生產環境下一般采用 push 模式的數據源。|規則持久化;一致性;快速|引入第三方依賴| ![](https://img.kancloud.cn/5e/47/5e472fcf7c448eef2e7bc766862ae817_1506x876.png) ## 規則配置 ### Sentinel控制臺改造 控制臺改造主要是為規則實現 * DynamicRuleProvider:從Nacos上讀取配置 * DynamicRulePublisher:將規則推送到Nacos上 1. pom.xml的文件修改,找到: ```java <!-- for Nacos rule publisher sample --> <dependency> <groupId>com.alibaba.csp</groupId> <artifactId>sentinel-datasource-nacos</artifactId> <scope>test</scope> </dependency> ``` 將 <scope>test</scope> 這一行注釋掉,即改為如下: ```java <!-- for Nacos rule publisher sample --> <dependency> <groupId>com.alibaba.csp</groupId> <artifactId>sentinel-datasource-nacos</artifactId> <!--<scope>test</scope>--> </dependency> ``` 2. java代碼的修改 找到 sentinel-dashboard/src/test/java/com/alibaba/csp/sentinel/dashboard/rule/nacos目錄,將整個目錄拷貝到 sentinel-dashboard/src/main/java/com/alibaba/csp/sentinel/dashboard/rule/nacos 修改 com.alibaba.csp.sentinel.dashboard.controller.v2.FlowControllerV2 ,找到 ```java @Autowired @Qualifier("flowRuleDefaultProvider") private DynamicRuleProvider<List<FlowRuleEntity>> ruleProvider; @Autowired @Qualifier("flowRuleDefaultPublisher") private DynamicRulePublisher<List<FlowRuleEntity>> rulePublisher; ``` 修改為: ```java @Autowired @Qualifier("flowRuleNacosProvider") private DynamicRuleProvider<List<FlowRuleEntity>> ruleProvider; @Autowired @Qualifier("flowRuleNacosPublisher") private DynamicRulePublisher<List<FlowRuleEntity>> rulePublisher; ``` 3. html的修改 修改 sentinel-dashboard/src/main/webapp/resources/app/scripts/directives/sidebar/sidebar.html,找到: ```html <!--<li ui-sref-active="active">--> <!--<a ui-sref="dashboard.flow({app: entry.app})">--> <!--<i class="glyphicon glyphicon-filter"></i>&nbsp;&nbsp;流控規則 V1</a>--> <!--</li>--> ``` 把注釋解開,即改為: ```html <li ui-sref-active="active"> <a ui-sref="dashboard.flow({app: entry.app})"> <i class="glyphicon glyphicon-filter"></i>&nbsp;&nbsp;流控規則 V1</a> </li> ``` >引用自 https://github.com/alibaba/Sentinel/wiki/在生產環境中使用-Sentinel
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