{"id":642,"date":"2023-09-06T16:33:47","date_gmt":"2023-09-06T08:33:47","guid":{"rendered":"http:\/\/www.huerpu.cc:7000\/?p=642"},"modified":"2023-09-06T16:33:47","modified_gmt":"2023-09-06T08:33:47","slug":"spring-cloudkilburn-2022-0-2%e7%89%88%e6%9c%ac%e7%b3%bb%e5%88%97%e6%95%99%e7%a8%8b%e5%9b%9b-%e6%9c%8d%e5%8a%a1%e5%ae%b9%e9%94%99%e5%a4%84%e7%90%86%e6%96%ad%e8%b7%af%e5%99%a8resilience4jcircuitbre","status":"publish","type":"post","link":"http:\/\/www.huerpu.cc:7000\/?p=642","title":{"rendered":"Spring Cloud(Kilburn 2022.0.2\u7248\u672c)\u7cfb\u5217\u6559\u7a0b(\u56db) \u670d\u52a1\u5bb9\u9519\u5904\u7406(\u65ad\u8def\u5668Resilience4JCircuitBreaker)"},"content":{"rendered":"

Spring Cloud(Kilburn 2022.0.2\u7248\u672c)\u7cfb\u5217\u6559\u7a0b(\u56db) \u670d\u52a1\u5bb9\u9519\u5904\u7406(\u65ad\u8def\u5668Resilience4JCircuitBreaker)<\/h3>\n

\u4e00\u3001\u670d\u52a1\u5bb9\u9519\u5904\u7406Resilience4JCircuitBreaker<\/h3>\n

\u5728\u2fbc\u5e76\u53d1\u8bbf\u95ee\u4e0b\uff0c\u6d41\u91cf\u6301\u7eed\u4e0d\u65ad\u7684\u6d8c\u2f0a\uff0c\u670d\u52a1\u4e4b\u95f4\u7684\u76f8\u4e92\u8c03\u2f64\u9891\u7387\u7a81\u7136\u589e\u52a0\uff0c\u5f15\u53d1\u7cfb\u7edf\u8d1f\u8f7d\u8fc7\u2fbc\uff0c\u8fd9\u65f6\u7cfb\u7edf\u6240\u4f9d\u8d56\u7684\u670d\u52a1\u7684\u7a33\u5b9a\u6027\u5bf9\u7cfb\u7edf\u7684\u5f71\u54cd\u2fae\u5e38\u2f24\uff0c\u2f7d\u4e14\u8fd8\u6709\u5f88\u591a\u4e0d\u786e\u5b9a\u56e0\u7d20\u5f15\u8d77\u96ea\u5d29\uff0c\u5982\u2f79\u7edc\u8fde\u63a5\u4e2d\u65ad\uff0c\u670d\u52a1\u5b95\u673a\u7b49\u3002\u2f00\u822c\u5fae\u670d\u52a1\u5bb9\u9519\u7ec4\u4ef6\u63d0\u4f9b\u4e86\u9650\u6d41\u3001\u9694\u79bb\u3001\u964d\u7ea7\u3001\u7194\u65ad\u7b49\u2f3f\u6bb5\uff0c\u53ef\u4ee5\u6709\u6548\u4fdd\u62a4\u6211\u4eec\u7684\u5fae\u670d\u52a1\u7cfb\u7edf\u3002<\/p>\n

Spring Cloud 2020<\/code> \u7248\u672c\u4e4b\u540e\u5e9f\u5f03\u4e86\u5bf9\u5927\u90e8\u5206 Netflix<\/code> \u7ec4\u4ef6\u7684\u652f\u6301\uff0c\u5176\u4e2d\u5c31\u5305\u62ec\u6700\u5e38\u7528\u7684 \u7194\u65ad<\/code> \u7ec4\u4ef6 Hystrix<\/code>\uff0c\u53d6\u800c\u4ee3\u4e4b\u7684\u5c31\u662f resilience4j<\/code>\u3001 sentinel<\/code> \u3001Spring Retry<\/code> \u7b49\u3002<\/p>\n

Resilience4J\u662f\u4e00\u4e2a\u8f7b\u91cf\u7ea7\u7684\u5bb9\u9519\u7ec4\u4ef6\uff0c\u4e3aJava8\u548c\u51fd\u6570\u5f0f\u7f16\u7a0b\u6240\u8bbe\u8ba1\u7684\u8f7b\u91cf\u7ea7\u5bb9\u9519\u6846\u67b6\u3002\u63d0\u4f9b\u4e86\u63d0\u4f9b\u4e86\u2f00\u7ec4\u2fbc\u9636\u51fd\u6570\uff0c\u5305\u62ec\u65ad\u8def\u5668\uff0c\u9650\u6d41\u5668\uff0c\u91cd\u8bd5\u673a\u5236\uff0c\u9694\u79bb\u673a\u5236\u3002<\/p>\n

\u4e8c\u3001\u5f15\u5165Resilience4JCircuitBreaker\u4f9d\u8d56<\/h3>\n

\u590d\u5236\u9879\u76eeopenfeignClientConsumer<\/code>\uff0c\u5e76\u4fee\u6539\u4e3aresilience4jClientConsumer<\/code>\uff0c\u4fee\u6539artifactId<\/code>\u3001name<\/code>\u3001description<\/code>\u4e3aresilience4jClientConsumer<\/code>\u3002<\/p>\n

<artifactId>resilience4jClientConsumer<\/artifactId>\n<version>0.0.1-SNAPSHOT<\/version>\n<name>resilience4jClientConsumer<\/name>\n<description>resilience4jClientConsumer<\/description><\/code><\/pre>\n
\u589e\u52a0resilience4j<\/code>\u4f9d\u8d56<\/p>\n
<!-- \u5f15\u5165\u65ad\u8def\u5668\u4f9d\u8d56resilience4j -->\n<dependency>\n        <groupId>org.springframework.cloud<\/groupId>\n        <artifactId>spring-cloud-starter-circuitbreaker-resilience4j<\/artifactId>\n<\/dependency><\/code><\/pre>\n
pom<\/code>\u6587\u4ef6\u5982\u4e0b<\/p>\n
<?xml version="1.0" encoding="UTF-8"?>\n<project xmlns="http:\/\/maven.apache.org\/POM\/4.0.0" xmlns:xsi="http:\/\/www.w3.org\/2001\/XMLSchema-instance"\n         xsi:schemaLocation="http:\/\/maven.apache.org\/POM\/4.0.0 https:\/\/maven.apache.org\/xsd\/maven-4.0.0.xsd">\n    <modelVersion>4.0.0<\/modelVersion>\n    <parent>\n        <groupId>org.springframework.boot<\/groupId>\n        <artifactId>spring-boot-starter-parent<\/artifactId>\n        <version>3.0.5<\/version>\n        <relativePath\/> <!-- lookup parent from repository -->\n    <\/parent>\n    <groupId>cc.huerpu<\/groupId>\n    <artifactId>resilience4jClientConsumer<\/artifactId>\n    <version>0.0.1-SNAPSHOT<\/version>\n    <name>resilience4jClientConsumer<\/name>\n    <description>resilience4jClientConsumer<\/description>\n    <properties>\n        <java.version>17<\/java.version>\n        <spring-cloud.version>2022.0.2<\/spring-cloud.version>\n    <\/properties>\n    <dependencies>\n        <dependency>\n            <groupId>org.springframework.cloud<\/groupId>\n            <artifactId>spring-cloud-starter-netflix-eureka-server<\/artifactId>\n        <\/dependency>\n        <dependency>\n            <groupId>org.springframework.boot<\/groupId>\n            <artifactId>spring-boot-starter-actuator<\/artifactId>\n        <\/dependency>\n        <dependency>\n            <groupId>org.springframework.boot<\/groupId>\n            <artifactId>spring-boot-starter-web<\/artifactId>\n        <\/dependency>\n        <!-- \u5f15\u5165\u65ad\u8def\u5668\u4f9d\u8d56resilience4j -->\n        <dependency>\n            <groupId>org.springframework.cloud<\/groupId>\n            <artifactId>spring-cloud-starter-circuitbreaker-resilience4j<\/artifactId>\n        <\/dependency>\n        <dependency>\n            <groupId>org.springframework.cloud<\/groupId>\n            <artifactId>spring-cloud-starter-openfeign<\/artifactId>\n        <\/dependency>\n        <dependency>\n            <groupId>org.springframework.cloud<\/groupId>\n            <artifactId>spring-cloud-starter-netflix-eureka-client<\/artifactId>\n        <\/dependency>\n\n        <dependency>\n            <groupId>org.springframework.boot<\/groupId>\n            <artifactId>spring-boot-starter-test<\/artifactId>\n            <scope>test<\/scope>\n        <\/dependency>\n    <\/dependencies>\n    <dependencyManagement>\n        <dependencies>\n            <dependency>\n                <groupId>org.springframework.cloud<\/groupId>\n                <artifactId>spring-cloud-dependencies<\/artifactId>\n                <version>2022.0.2<\/version>\n                <type>pom<\/type>\n                <scope>import<\/scope>\n            <\/dependency>\n        <\/dependencies>\n    <\/dependencyManagement>\n\n    <build>\n        <plugins>\n            <plugin>\n                <groupId>org.springframework.boot<\/groupId>\n                <artifactId>spring-boot-maven-plugin<\/artifactId>\n            <\/plugin>\n        <\/plugins>\n    <\/build>\n    <repositories>\n        <repository>\n            <id>netflix-candidates<\/id>\n            <name>Netflix Candidates<\/name>\n            <url>https:\/\/artifactory-oss.prod.netflix.net\/artifactory\/maven-oss-candidates<\/url>\n            <snapshots>\n                <enabled>false<\/enabled>\n            <\/snapshots>\n        <\/repository>\n    <\/repositories>\n\n<\/project>\n<\/code><\/pre>\n
\u4e09\u3001Resilience4JCircuitBreaker\u914d\u7f6e<\/h3>\n
\u4fee\u6539application.yml<\/code>\u6587\u4ef6\uff0c\u4fee\u6539\u7aef\u53e3\u4e3a8004<\/code>\uff0c\u6253\u5f00circuitbreaker<\/code>\uff0c\u5e76\u8bbe\u7f6e\u5176\u914d\u7f6e\u9879\uff0c\u8fd8\u6709openfeignClientConsumer<\/code>\u66ff\u6362\u6210resilience4jClientConsumer<\/code>\u3002<\/p>\n
spring:\n  cloud:\n    openfeign:\n      circuitbreaker:\n        enabled: true\n\nresilience4j:\n  circuitbreaker:\n    configs:\n      default:\n        failureRateThreshold: 30 #\u5931\u8d25\u8bf7\u6c42\u767e\u5206\u2f50\uff0c\u8d85\u8fc7\u8fd9\u4e2a\u2f50\u4f8b\uff0cCircuitBreaker\u53d8\u4e3aOPEN\u72b6\u6001\n        slidingWindowSize: 10 #\u6ed1\u52a8\u7a97\u2f1d\u7684\u2f24\u2f29\uff0c\u914d\u7f6eCOUNT_BASED,\u8868\u793a10\u4e2a\u8bf7\u6c42\uff0c\u914d\u7f6eTIME_BASED\u8868\u793a10\u79d2\n        minimumNumberOfCalls: 5 #\u6700\u2f29\u8bf7\u6c42\u4e2a\u6570\uff0c\u53ea\u6709\u5728\u6ed1\u52a8\u7a97\u2f1d\u5185\uff0c\u8bf7\u6c42\u4e2a\u6570\u8fbe\u5230\u8fd9\u4e2a\u4e2a\u6570\uff0c\u624d\u4f1a\u89e6\u53d1CircuitBreader\u5bf9\u4e8e\u65ad\u8def\u5668\u7684\u5224\u65ad\n        slidingWindowType: TIME_BASED #\u6ed1\u52a8\u7a97\u2f1d\u7684\u7c7b\u578b\n        permittedNumberOfCallsInHalfOpenState: 3 #\u5f53CircuitBreaker\u5904\u4e8eHALF_OPEN\u72b6\u6001\u7684\u65f6\u5019\uff0c\u5141\u8bb8\u901a\u8fc7\u7684\u8bf7\u6c42\u4e2a\u6570\n        automaticTransitionFromOpenToHalfOpenEnabled: true #\u8bbe\u7f6etrue\uff0c\u8868\u793a\u2f83\u52a8\u4eceOPEN\u53d8\u6210HALF_OPEN\uff0c\u5373\u4f7f\u6ca1\u6709\u8bf7\u6c42\u8fc7\u6765\n        waitDurationInOpenState: 2s #\u4eceOPEN\u5230HALF_OPEN\u72b6\u6001\u9700\u8981\u7b49\u5f85\u7684\u65f6\u95f4\n        recordExceptions: #\u5f02\u5e38\u540d\u5355\n          - java.lang.Exception\n    instances:\n      hepResilience4j:\n        failureRateThreshold: 50\n        slowCallDurationThreshold: 2s #\u6162\u8c03\u2f64\u65f6\u95f4\u9608\u503c\uff0c\u2fbc\u4e8e\u8fd9\u4e2a\u9608\u503c\u7684\u547c\u53eb\u89c6\u4e3a\u6162\u8c03\u2f64\uff0c\u5e76\u589e\u52a0\u6162\u8c03\u2f64\u2f50\u4f8b\u3002\n        slowCallRateThreshold: 30 #\u6162\u8c03\u2f64\u767e\u5206\u2f50\u9608\u503c\uff0c\u65ad\u8def\u5668\u628a\u8c03\u2f64\u65f6\u95f4\u2f24\u4e8e slowCallDurationThreshold\uff0c\u89c6\u4e3a\u6162\u8c03\u2f64\uff0c\u5f53\u6162\u8c03\u2f64\u2f50\u4f8b\u2f24\u4e8e\u9608\u503c\uff0c\u65ad\u8def\u5668\u6253\u5f00\uff0c\u5e76\u8fdb\u2f8f\u670d\u52a1\u964d\u7ea7\n        slidingWindowSize: 10\n        slidingWindowType: TIME_BASED\n        minimumNumberOfCalls: 2\n        permittedNumberOfCallsInHalfOpenState: 2\n        waitDurationInOpenState: 2s #\u4eceOPEN\u5230HALF_OPEN\u72b6\u6001\u9700\u8981\u7b49\u5f85\u7684\u65f6\u95f4<\/code><\/pre>\n
\u521b\u5efa\u4e00\u4e2aResilience4jController<\/code>\uff0c\u5e76\u628aUserService<\/code>\u6ce8\u5165\u8fdb\u53bb\uff0c\u7136\u540e\u5b9a\u4e49\u4e86\u4e00\u4e2agetUserById<\/code>\uff0c\u5e76\u53bb\u8c03\u7528userService.getUserById();<\/code><\/p>\n
package cc.huerpu.eurekaclient.controller;\n\nimport cc.huerpu.eurekaclient.service.UserService;\nimport org.springframework.beans.factory.annotation.Autowired;\nimport org.springframework.web.bind.annotation.RequestMapping;\nimport org.springframework.web.bind.annotation.RestController;\n\n@RestController\npublic class ResilienceController {\n\n    @Autowired\n    private UserService userService;\n\n    @RequestMapping("\/getUserById")\n    @CircuitBreaker(name = "hepResilience4j")\n    public String getUserById(){\n        String res = userService.getUserById();\n        return "ResilienceController:" + res;\n    }\n}<\/code><\/pre>\n
\u521b\u5efaResilienceFallbackController<\/code>\uff0c\u7528\u6765\u7194\u65ad\u5904\u7406\u64cd\u4f5c\u3002<\/p>\n
package cc.huerpu.eurekaclient.controller;\n\nimport cc.huerpu.eurekaclient.service.UserService;\nimport org.springframework.stereotype.Component;\n\n@Component\npublic class ResilienceFallbackController implements UserService {\n\n    public String getUserById(){\n        return "ResilienceFallbackController: call interface error....circuitbreaker open";\n    }\n}<\/code><\/pre>\n
\u4fee\u6539UserService\u63a5\u53e3\uff0c\u8bbe\u7f6e\u7194\u65ad\u5904\u7406\u7c7b\u4e3aResilienceFallbackController.class<\/code><\/p>\n
package cc.huerpu.eurekaclient.service;\n\nimport cc.huerpu.eurekaclient.controller.ResilienceFallbackController;\nimport org.springframework.cloud.openfeign.FeignClient;\nimport org.springframework.web.bind.annotation.RequestMapping;\n\n@FeignClient(value = "EUREKACLIENT",fallback = ResilienceFallbackController.class)\npublic interface UserService {\n\n    @RequestMapping("\/getUserById")\n    public String getUserById();\n\n}<\/code><\/pre>\n
\u628a\u539f\u6765eurekaClient<\/code>\u670d\u52a1\u4e2d\u7684\u63a5\u53e3\u589e\u52a0Thread.sleep(60000);<\/code>\uff0c\u6a21\u62df\u670d\u52a1\u6302\u6389\u4e86\u3002\u5f53\u7136\u4e5f\u53ef\u4ee5\u4e0d\u6ce8\u518c\u539f\u6765eurekaClient<\/code>\u670d\u52a1\u6765\u6a21\u62df\u670d\u52a1\u6302\u6389\u4e86\u4e5f\u53ef\u4ee5\u3002<\/p>\n
@RestController\npublic class UserController {\n\n    @RequestMapping("\/getUserById")\n    public String getUserById() throws Exception{\n        Thread.sleep(60000);\n        return "{id:1,name:jason,age:23,sex: man}";\n    }\n}<\/code><\/pre>\n
Resilence4j\u5bf9\u4e8e\u5fae\u670d\u52a1\u5bb9\u9519\u7684\u5904\u7406\uff0c\u5206\u522b\u4e3a\u7194\u65ad\uff0c\u9694\u79bb\uff0c\u9650\u6d41\u3002<\/p>\n
\u56db\u3001CircuitBreaker\u65ad\u8def\u5668<\/h3>\n
\u65ad\u8def\u5668CircuitBreaker<\/code>\u901a\u5e38\u5b58\u5728\u4e09\u79cd\u72b6\u6001(CLOSE\u3001OPEN\u3001HALF_OPEN)<\/code>\uff0c\u5e76\u901a\u8fc7\u4e00\u4e2a\u65f6\u95f4\u6216\u6570\u91cf\u7a97\u53e3\u6765\u8bb0\u5f55\u5f53\u524d\u7684\u8bf7\u6c42\u6210\u529f\u7387\u6216\u6162\u901f\u7387\uff0c\u4ece\u800c\u6839\u636e\u8fd9\u4e9b\u6307\u6807\u6765\u4f5c\u51fa\u6b63\u786e\u7684\u5bb9\u9519\u54cd\u5e94\u3002<\/p>\n
\u542f\u52a8\u9879\u76eeresilience4jClientConsumer<\/code>\uff0c\u5728\u6d4f\u89c8\u5668\u8c03\u7528http:\/\/localhost:8004\/getUserById<\/code>\uff0c\u53ef\u4ee5\u770b\u5230ResilienceController:ResilienceFallbackController: call interface error....circuitbreaker open<\/code>\u3002<\/p>\n
\"resilience4j\"<\/p>\n
\"image-20230519133937747\"<\/p>\n
\n
\u672c\u6587\u53c2\u8003SpringCloud Resilience4JCircuitBreaker\u94fe\u63a5\uff1ahttps:\/\/docs.spring.io\/spring-cloud-circuitbreaker\/docs\/3.0.2\/reference\/html\/<\/code><\/p>\n<\/blockquote>\n","protected":false},"excerpt":{"rendered":"
Spring Cloud(Kilburn 2022.0.2\u7248\u672c)\u7cfb\u5217\u6559\u7a0b(\u56db) \u670d\u52a1\u5bb9\u9519\u5904\u7406(\u65ad\u8def\u5668Resil […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[22],"tags":[],"class_list":["post-642","post","type-post","status-publish","format-standard","hentry","category-spring-cloudkilburn-2022-0-2"],"_links":{"self":[{"href":"http:\/\/www.huerpu.cc:7000\/index.php?rest_route=\/wp\/v2\/posts\/642","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/www.huerpu.cc:7000\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/www.huerpu.cc:7000\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/www.huerpu.cc:7000\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/www.huerpu.cc:7000\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=642"}],"version-history":[{"count":1,"href":"http:\/\/www.huerpu.cc:7000\/index.php?rest_route=\/wp\/v2\/posts\/642\/revisions"}],"predecessor-version":[{"id":643,"href":"http:\/\/www.huerpu.cc:7000\/index.php?rest_route=\/wp\/v2\/posts\/642\/revisions\/643"}],"wp:attachment":[{"href":"http:\/\/www.huerpu.cc:7000\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=642"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/www.huerpu.cc:7000\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=642"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/www.huerpu.cc:7000\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=642"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}