{"id":1132,"date":"2019-01-16T10:09:34","date_gmt":"2019-01-16T02:09:34","guid":{"rendered":"https:\/\/blog.jsjs.org\/?p=1132"},"modified":"2019-01-16T10:09:34","modified_gmt":"2019-01-16T02:09:34","slug":"%e5%be%ae%e6%9c%8d%e5%8a%a1%e6%b3%a8%e5%86%8c%e4%b8%ad%e5%bf%83-eureka-%e6%9e%b6%e6%9e%84%e6%b7%b1%e5%85%a5%e8%a7%a3%e8%af%bb","status":"publish","type":"post","link":"https:\/\/blog.jsjs.org\/?p=1132","title":{"rendered":"\u5fae\u670d\u52a1\u6ce8\u518c\u4e2d\u5fc3 Eureka \u67b6\u6784\u6df1\u5165\u89e3\u8bfb"},"content":{"rendered":"<div class=\"article-main\" data-v-e73bee8c=\"\" data-v-208ee46f=\"\" data-v-9f38139c=\"\">\n<div class=\"article-typo article-content\" data-v-e73bee8c=\"\">\n<p>\u5fae\u670d\u52a1\u67b6\u6784\u4e2d\u6700\u6838\u5fc3\u7684\u90e8\u5206\u662f\u670d\u52a1\u6cbb\u7406\uff0c\u670d\u52a1\u6cbb\u7406\u6700\u57fa\u7840\u7684\u7ec4\u4ef6\u662f\u6ce8\u518c\u4e2d\u5fc3\u3002\u968f\u7740\u5fae\u670d\u52a1\u67b6\u6784\u7684\u53d1\u5c55\uff0c\u51fa\u73b0\u4e86\u5f88\u591a\u5fae\u670d\u52a1\u67b6\u6784\u7684\u89e3\u51b3\u65b9\u6848\uff0c\u5176\u4e2d\u5305\u62ec\u6211\u4eec\u719f\u77e5\u7684 Dubbo \u548c Spring Cloud\u3002<\/p>\n<p>\u5173\u4e8e\u6ce8\u518c\u4e2d\u5fc3\u7684\u89e3\u51b3\u65b9\u6848\uff0cdubbo \u652f\u6301\u4e86 Zookeeper\u3001Redis\u3001Multicast \u548c Simple\uff0c\u5b98\u65b9\u63a8\u8350 Zookeeper\u3002Spring Cloud \u652f\u6301\u4e86 Zookeeper\u3001Consul \u548c Eureka\uff0c\u5b98\u65b9\u63a8\u8350 Eureka\u3002<\/p>\n<p>\u4e24\u8005\u4e4b\u6240\u4ee5\u63a8\u8350\u4e0d\u540c\u7684\u5b9e\u73b0\u65b9\u5f0f\uff0c\u539f\u56e0\u5728\u4e8e\u7ec4\u4ef6\u7684\u7279\u70b9\u4ee5\u53ca\u9002\u7528\u573a\u666f\u4e0d\u540c\u3002\u7b80\u5355\u6765\u8bf4\uff1a<\/p>\n<ul>\n<li>ZK \u7684\u8bbe\u8ba1\u539f\u5219\u662f CP\uff0c\u5373\u5f3a\u4e00\u81f4\u6027\u548c\u5206\u533a\u5bb9\u9519\u6027\u3002\u4ed6\u4fdd\u8bc1\u6570\u636e\u7684\u5f3a\u4e00\u81f4\u6027\uff0c\u4f46\u820d\u5f03\u4e86\u53ef\u7528\u6027\uff0c<strong>\u5982\u679c\u51fa\u73b0\u7f51\u7edc\u95ee\u9898\u53ef\u80fd\u4f1a\u5f71\u54cd ZK \u7684\u9009\u4e3e\uff0c\u5bfc\u81f4 ZK \u6ce8\u518c\u4e2d\u5fc3\u7684\u4e0d\u53ef\u7528<\/strong>\u3002<\/li>\n<li>Eureka \u7684\u8bbe\u8ba1\u539f\u5219\u662f AP\uff0c\u5373\u53ef\u7528\u6027\u548c\u5206\u533a\u5bb9\u9519\u6027\u3002\u4ed6\u4fdd\u8bc1\u4e86\u6ce8\u518c\u4e2d\u5fc3\u7684\u53ef\u7528\u6027\uff0c\u4f46\u820d\u5f03\u4e86\u6570\u636e\u4e00\u81f4\u6027\uff0c<strong>\u5404\u8282\u70b9\u4e0a\u7684\u6570\u636e\u6709\u53ef\u80fd\u662f\u4e0d\u4e00\u81f4\u7684\uff08\u4f1a\u6700\u7ec8\u4e00\u81f4\uff09<\/strong>\u3002\n<p>Eureka \u91c7\u7528\u7eaf Java \u5b9e\u73b0\uff0c\u9664\u5b9e\u73b0\u4e86\u6ce8\u518c\u4e2d\u5fc3\u57fa\u672c\u7684\u670d\u52a1\u6ce8\u518c\u548c\u53d1\u73b0\u4e4b\u5916\uff0c\u6781\u5927\u7684\u6ee1\u8db3\u6ce8\u518c\u4e2d\u5fc3\u7684\u53ef\u7528\u6027\uff0c\u5373\u4f7f\u53ea\u6709\u4e00\u53f0\u670d\u52a1\u53ef\u7528\uff0c\u4e5f\u53ef\u4ee5\u4fdd\u8bc1\u6ce8\u518c\u4e2d\u5fc3\u7684\u53ef\u7528\u6027\u3002<\/li>\n<\/ul>\n<p>\u672c\u6587\u5c06\u805a\u7126\u5230 Eureka \u7684\u5185\u90e8\u5b9e\u73b0\u539f\u7406\uff0c\u5148\u4ece\u5fae\u670d\u52a1\u67b6\u6784\u7684\u90e8\u7f72\u56fe\u4ecb\u7ecd Eureka \u7684\u603b\u4f53\u67b6\u6784\uff0c\u7136\u540e\u5256\u6790\u670d\u52a1\u4fe1\u606f\u7684\u5b58\u50a8\u7ed3\u6784\uff0c\u6700\u540e\u63a2\u7a76\u8ddf\u670d\u52a1\u751f\u547d\u5468\u671f\u76f8\u5173\u7684\u670d\u52a1\u6ce8\u518c\u673a\u5236\u3001\u670d\u52a1\u7eed\u7ea6\u673a\u5236\u3001\u670d\u52a1\u6ce8\u9500\u673a\u5236\u3001\u670d\u52a1\u5254\u9664\u673a\u5236\u3001\u670d\u52a1\u83b7\u53d6\u673a\u5236\u3001\u548c\u670d\u52a1\u540c\u6b65\u673a\u5236\u3002<\/p>\n<h2>Eureka \u603b\u4f53\u67b6\u6784<\/h2>\n<p>\u4e0b\u9762\u662f Eureka \u6ce8\u518c\u4e2d\u5fc3\u90e8\u7f72\u5728\u591a\u4e2a\u673a\u623f\u7684\u67b6\u6784\u56fe\uff0c\u8fd9\u6b63\u662f\u4ed6\u9ad8\u53ef\u7528\u6027\u7684\u4f18\u52bf\uff08Zookeeper \u5343\u4e07\u522b\u8fd9\u4e48\u90e8\u7f72\uff09\u3002<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/static001.infoq.cn\/resource\/image\/8b\/8b\/8bf6e27c60dbfd717b6830263890368b.png\" alt=\"\" \/><img decoding=\"async\" src=\"https:\/\/static001.infoq.cn\/resource\/image\/8b\/8b\/8bf6e27c60dbfd717b6830263890368b.png\" \/><\/p>\n<p>\u4ece\u7ec4\u4ef6\u529f\u80fd\u770b\uff1a<\/p>\n<ul>\n<li>\u9ec4\u8272\u6ce8\u518c\u4e2d\u5fc3\u96c6\u7fa4\uff0c\u5206\u522b\u90e8\u7f72\u5728\u5317\u4eac\u3001\u5929\u6d25\u3001\u9752\u5c9b\u673a\u623f\uff1b<\/li>\n<li>\u7ea2\u8272\u670d\u52a1\u63d0\u4f9b\u8005\uff0c\u5206\u522b\u90e8\u7f72\u5317\u4eac\u548c\u9752\u5c9b\u673a\u623f\uff1b<\/li>\n<li>\u6de1\u7eff\u8272\u670d\u52a1\u6d88\u8d39\u8005\uff0c\u5206\u522b\u90e8\u7f72\u5728\u5317\u4eac\u548c\u5929\u6d25\u673a\u623f\uff1b<\/li>\n<\/ul>\n<p>\u4ece\u673a\u623f\u5206\u5e03\u770b\uff1a<\/p>\n<ul>\n<li>\u5317\u4eac\u673a\u623f\u90e8\u7f72\u4e86\u6ce8\u518c\u4e2d\u5fc3\u3001\u670d\u52a1\u63d0\u4f9b\u8005\u548c\u670d\u52a1\u6d88\u8d39\u8005\uff1b<\/li>\n<li>\u5929\u6d25\u673a\u623f\u90e8\u7f72\u4e86\u6ce8\u518c\u4e2d\u5fc3\u548c\u670d\u52a1\u6d88\u8d39\u8005\uff1b<\/li>\n<li>\u9752\u5c9b\u673a\u623f\u90e8\u7f72\u4e86\u6ce8\u518c\u4e2d\u5fc3\u548c\u670d\u52a1\u63d0\u4f9b\u8005\uff1b<\/li>\n<\/ul>\n<h3>\u7ec4\u4ef6\u8c03\u7528\u5173\u7cfb<\/h3>\n<p><strong>\u670d\u52a1\u63d0\u4f9b\u8005<\/strong><\/p>\n<ol>\n<li>\u542f\u52a8\u540e\uff0c\u5411\u6ce8\u518c\u4e2d\u5fc3\u53d1\u8d77 register \u8bf7\u6c42\uff0c\u6ce8\u518c\u670d\u52a1<\/li>\n<li>\u5728\u8fd0\u884c\u8fc7\u7a0b\u4e2d\uff0c\u5b9a\u65f6\u5411\u6ce8\u518c\u4e2d\u5fc3\u53d1\u9001 renew \u5fc3\u8df3\uff0c\u8bc1\u660e\u201c\u6211\u8fd8\u6d3b\u7740\u201d\u3002<\/li>\n<li>\u505c\u6b62\u670d\u52a1\u63d0\u4f9b\u8005\uff0c\u5411\u6ce8\u518c\u4e2d\u5fc3\u53d1\u8d77 cancel \u8bf7\u6c42\uff0c\u6e05\u7a7a\u5f53\u524d\u670d\u52a1\u6ce8\u518c\u4fe1\u606f\u3002<\/li>\n<\/ol>\n<p><strong>\u670d\u52a1\u6d88\u8d39\u8005<\/strong><\/p>\n<ol>\n<li>\u542f\u52a8\u540e\uff0c\u4ece\u6ce8\u518c\u4e2d\u5fc3\u62c9\u53d6\u670d\u52a1\u6ce8\u518c\u4fe1\u606f<\/li>\n<li>\u5728\u8fd0\u884c\u8fc7\u7a0b\u4e2d\uff0c\u5b9a\u65f6\u66f4\u65b0\u670d\u52a1\u6ce8\u518c\u4fe1\u606f\u3002<\/li>\n<li>\u670d\u52a1\u6d88\u8d39\u8005\u53d1\u8d77\u8fdc\u7a0b\u8c03\u7528\uff1a<br \/>\na&gt; \u670d\u52a1\u6d88\u8d39\u8005\uff08\u5317\u4eac\uff09\u4f1a\u4ece\u670d\u52a1\u6ce8\u518c\u4fe1\u606f\u4e2d\u9009\u62e9\u540c\u673a\u623f\u7684\u670d\u52a1\u63d0\u4f9b\u8005\uff08\u5317\u4eac\uff09\uff0c\u53d1\u8d77\u8fdc\u7a0b\u8c03\u7528\u3002\u53ea\u6709\u540c\u673a\u623f\u7684\u670d\u52a1\u63d0\u4f9b\u8005\u6302\u4e86\u624d\u4f1a\u9009\u62e9\u5176\u4ed6\u673a\u623f\u7684\u670d\u52a1\u63d0\u4f9b\u8005\uff08\u9752\u5c9b\uff09\u3002<br \/>\nb&gt; \u670d\u52a1\u6d88\u8d39\u8005\uff08\u5929\u6d25\uff09\u56e0\u4e3a\u540c\u673a\u623f\u5185\u6ca1\u6709\u670d\u52a1\u63d0\u4f9b\u8005\uff0c\u5219\u4f1a\u6309\u8d1f\u8f7d\u5747\u8861\u7b97\u6cd5\u9009\u62e9\u5317\u4eac\u6216\u9752\u5c9b\u7684\u670d\u52a1\u63d0\u4f9b\u8005\uff0c\u53d1\u8d77\u8fdc\u7a0b\u8c03\u7528\u3002<\/li>\n<\/ol>\n<p><strong>\u6ce8\u518c\u4e2d\u5fc3<\/strong><\/p>\n<ol>\n<li>\u542f\u52a8\u540e\uff0c\u4ece\u5176\u4ed6\u8282\u70b9\u62c9\u53d6\u670d\u52a1\u6ce8\u518c\u4fe1\u606f\u3002<\/li>\n<li>\u8fd0\u884c\u8fc7\u7a0b\u4e2d\uff0c\u5b9a\u65f6\u8fd0\u884c evict \u4efb\u52a1\uff0c\u5254\u9664\u6ca1\u6709\u6309\u65f6 renew \u7684\u670d\u52a1\uff08\u5305\u62ec\u975e\u6b63\u5e38\u505c\u6b62\u548c\u7f51\u7edc\u6545\u969c\u7684\u670d\u52a1\uff09\u3002<\/li>\n<li>\u8fd0\u884c\u8fc7\u7a0b\u4e2d\uff0c\u63a5\u6536\u5230\u7684 register\u3001renew\u3001cancel \u8bf7\u6c42\uff0c\u90fd\u4f1a\u540c\u6b65\u81f3\u5176\u4ed6\u6ce8\u518c\u4e2d\u5fc3\u8282\u70b9\u3002\n<p>\u672c\u6587\u5c06\u8be6\u7ec6\u8bf4\u660e\u4e0a\u56fe\u4e2d\u7684 registry\u3001register\u3001renew\u3001cancel\u3001getRegistry\u3001evict \u7684\u5185\u90e8\u673a\u5236\u3002<\/li>\n<\/ol>\n<h2>\u6570\u636e\u5b58\u50a8\u7ed3\u6784<\/h2>\n<p>\u65e2\u7136\u662f\u670d\u52a1\u6ce8\u518c\u4e2d\u5fc3\uff0c\u5fc5\u7136\u8981\u5b58\u50a8\u670d\u52a1\u7684\u4fe1\u606f\uff0c\u6211\u4eec\u77e5\u9053 ZK \u662f\u5c06\u670d\u52a1\u4fe1\u606f\u4fdd\u5b58\u5728\u6811\u5f62\u8282\u70b9\u4e0a\u3002\u800c\u4e0b\u9762\u662f Eureka \u7684\u6570\u636e\u5b58\u50a8\u7ed3\u6784\uff1a<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/static001.infoq.cn\/resource\/image\/61\/2a\/61a26fffaeaf63d5dd5c0c2c5dd7852a.png\" alt=\"\" \/><img decoding=\"async\" src=\"https:\/\/static001.infoq.cn\/resource\/image\/61\/2a\/61a26fffaeaf63d5dd5c0c2c5dd7852a.png\" \/><\/p>\n<p>Eureka \u7684\u6570\u636e\u5b58\u50a8\u5206\u4e86\u4e24\u5c42\uff1a\u6570\u636e\u5b58\u50a8\u5c42\u548c\u7f13\u5b58\u5c42\u3002<\/p>\n<p>Eureka Client \u5728\u62c9\u53d6\u670d\u52a1\u4fe1\u606f\u65f6\uff0c\u5148\u4ece\u7f13\u5b58\u5c42\u83b7\u53d6\uff08\u76f8\u5f53\u4e8e Redis\uff09\uff0c\u5982\u679c\u83b7\u53d6\u4e0d\u5230\uff0c\u5148\u628a\u6570\u636e\u5b58\u50a8\u5c42\u7684\u6570\u636e\u52a0\u8f7d\u5230\u7f13\u5b58\u4e2d\uff08\u76f8\u5f53\u4e8e Mysql\uff09\uff0c\u518d\u4ece\u7f13\u5b58\u4e2d\u83b7\u53d6\u3002\u503c\u5f97\u6ce8\u610f\u7684\u662f\uff0c\u6570\u636e\u5b58\u50a8\u5c42\u7684\u6570\u636e\u7ed3\u6784\u662f\u670d\u52a1\u4fe1\u606f\uff0c\u800c\u7f13\u5b58\u4e2d\u4fdd\u5b58\u7684\u662f\u7ecf\u8fc7\u5904\u7406\u52a0\u5de5\u8fc7\u7684\u3001\u53ef\u4ee5\u76f4\u63a5\u4f20\u8f93\u5230 Eureka Client \u7684\u6570\u636e\u7ed3\u6784\u3002<\/p>\n<p>Eureka \u8fd9\u6837\u7684\u6570\u636e\u7ed3\u6784\u8bbe\u8ba1\u662f\u628a\u5185\u90e8\u7684\u6570\u636e\u5b58\u50a8\u7ed3\u6784\u4e0e\u5bf9\u5916\u7684\u6570\u636e\u7ed3\u6784\u9694\u79bb\u5f00\u4e86\uff0c\u5c31\u50cf\u662f\u6211\u4eec\u5e73\u65f6\u5728\u8fdb\u884c\u63a5\u53e3\u8bbe\u8ba1\u4e00\u6837\uff0c\u5bf9\u5916\u8f93\u51fa\u7684\u6570\u636e\u7ed3\u6784\u548c\u6570\u636e\u5e93\u4e2d\u7684\u6570\u636e\u7ed3\u6784\u5f80\u5f80\u90fd\u662f\u4e0d\u4e00\u6837\u7684\u3002<\/p>\n<p><strong>\u6570\u636e\u5b58\u50a8\u5c42<\/strong><\/p>\n<p>\u8fd9\u91cc\u4e3a\u4ec0\u4e48\u8bf4\u662f\u5b58\u50a8\u5c42\u800c\u4e0d\u662f\u6301\u4e45\u5c42\uff1f\u56e0\u4e3a rigistry \u672c\u8d28\u4e0a\u662f\u4e00\u4e2a\u53cc\u5c42\u7684 ConcurrentHashMap\uff0c\u5b58\u50a8\u5728\u5185\u5b58\u4e2d\u7684\u3002<\/p>\n<ul>\n<li>\u7b2c\u4e00\u5c42\u7684 key \u662f<code>spring.application.name<\/code>\uff0cvalue \u662f\u7b2c\u4e8c\u5c42 ConcurrentHashMap\uff1b<\/li>\n<li>\u7b2c\u4e8c\u5c42 ConcurrentHashMap \u7684 key \u662f\u670d\u52a1\u7684 InstanceId\uff0cvalue \u662f Lease \u5bf9\u8c61\uff1b<\/li>\n<li>Lease \u5bf9\u8c61\u5305\u542b\u4e86\u670d\u52a1\u8be6\u60c5\u548c\u670d\u52a1\u6cbb\u7406\u76f8\u5173\u7684\u5c5e\u6027\u3002\n<p><strong>\u4e8c\u7ea7\u7f13\u5b58\u5c42<\/strong><\/li>\n<\/ul>\n<p>Eureka \u5b9e\u73b0\u4e86\u4e8c\u7ea7\u7f13\u5b58\u6765\u4fdd\u5b58\u5373\u5c06\u8981\u5bf9\u5916\u4f20\u8f93\u7684\u670d\u52a1\u4fe1\u606f\uff0c\u6570\u636e\u7ed3\u6784\u5b8c\u5168\u76f8\u540c\u3002<\/p>\n<ul>\n<li>\u4e00\u7ea7\u7f13\u5b58\uff1a<code>ConcurrentHashMap&lt;Key,Value&gt; readOnlyCacheMap<\/code>\uff0c\u672c\u8d28\u4e0a\u662f HashMap\uff0c\u65e0\u8fc7\u671f\u65f6\u95f4\uff0c\u4fdd\u5b58\u670d\u52a1\u4fe1\u606f\u7684\u5bf9\u5916\u8f93\u51fa\u6570\u636e\u7ed3\u6784\u3002<\/li>\n<li>\u4e8c\u7ea7\u7f13\u5b58\uff1a<code>Loading&lt;Key,Value&gt; readWriteCacheMap<\/code>\uff0c\u672c\u8d28\u4e0a\u662f guava \u7684\u7f13\u5b58\uff0c\u5305\u542b\u5931\u6548\u673a\u5236\uff0c\u4fdd\u5b58\u670d\u52a1\u4fe1\u606f\u7684\u5bf9\u5916\u8f93\u51fa\u6570\u636e\u7ed3\u6784\u3002<\/li>\n<\/ul>\n<p>\u65e2\u7136\u662f\u7f13\u5b58\uff0c\u90a3\u5fc5\u7136\u8981\u6709\u66f4\u65b0\u673a\u5236\uff0c\u6765\u4fdd\u8bc1\u6570\u636e\u7684\u4e00\u81f4\u6027\u3002\u4e0b\u9762\u662f\u7f13\u5b58\u7684\u66f4\u65b0\u673a\u5236\uff1a<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/static001.infoq.cn\/resource\/image\/2d\/c3\/2dcf60f2fa8ec888f2b3262e6e9de5c3.png\" alt=\"\" \/><img decoding=\"async\" src=\"https:\/\/static001.infoq.cn\/resource\/image\/2d\/c3\/2dcf60f2fa8ec888f2b3262e6e9de5c3.png\" \/><\/p>\n<p>\u66f4\u65b0\u673a\u5236\u5305\u542b\u5220\u9664\u548c\u52a0\u8f7d\u4e24\u4e2a\u90e8\u5206\uff0c\u4e0a\u56fe\u9ed1\u8272\u7bad\u5934\u8868\u793a\u5220\u9664\u7f13\u5b58\u7684\u52a8\u4f5c\uff0c\u7eff\u8272\u8868\u793a\u52a0\u8f7d\u6216\u89e6\u53d1\u52a0\u8f7d\u7684\u52a8\u4f5c\u3002<\/p>\n<p><strong>\u5220\u9664\u4e8c\u7ea7\u7f13\u5b58\uff1a<\/strong><\/p>\n<ol>\n<li>Eureka Client \u53d1\u9001 register\u3001renew \u548c cancel \u8bf7\u6c42\u5e76\u66f4\u65b0 registry \u6ce8\u518c\u8868\u4e4b\u540e\uff0c\u5220\u9664\u4e8c\u7ea7\u7f13\u5b58\uff1b<\/li>\n<li>Eureka Server \u81ea\u8eab\u7684 Evict Task \u5254\u9664\u670d\u52a1\u540e\uff0c\u5220\u9664\u4e8c\u7ea7\u7f13\u5b58\uff1b<\/li>\n<li>\u4e8c\u7ea7\u7f13\u5b58\u672c\u8eab\u8bbe\u7f6e\u4e86 guava \u7684\u5931\u6548\u673a\u5236\uff0c\u9694\u4e00\u6bb5\u65f6\u95f4\u540e\u81ea\u5df1\u81ea\u52a8\u5931\u6548\uff1b<\/li>\n<\/ol>\n<p><strong>\u52a0\u8f7d\u4e8c\u7ea7\u7f13\u5b58\uff1a<\/strong><\/p>\n<ol>\n<li>Eureka Client \u53d1\u9001 getRegistry \u8bf7\u6c42\u540e\uff0c\u5982\u679c\u4e8c\u7ea7\u7f13\u5b58\u4e2d\u6ca1\u6709\uff0c\u5c31\u89e6\u53d1 guava \u7684 load\uff0c\u5373\u4ece registry \u4e2d\u83b7\u53d6\u539f\u59cb\u670d\u52a1\u4fe1\u606f\u540e\u8fdb\u884c\u5904\u7406\u52a0\u5de5\uff0c\u518d\u52a0\u8f7d\u5230\u4e8c\u7ea7\u7f13\u5b58\u4e2d\u3002<\/li>\n<li>Eureka Server \u66f4\u65b0\u4e00\u7ea7\u7f13\u5b58\u7684\u65f6\u5019\uff0c\u5982\u679c\u4e8c\u7ea7\u7f13\u5b58\u6ca1\u6709\u6570\u636e\uff0c\u4e5f\u4f1a\u89e6\u53d1 guava \u7684 load\u3002<\/li>\n<\/ol>\n<p><strong>\u66f4\u65b0\u4e00\u7ea7\u7f13\u5b58\uff1a<\/strong><\/p>\n<ol>\n<li>Eureka Server \u5185\u7f6e\u4e86\u4e00\u4e2a TimerTask\uff0c\u5b9a\u65f6\u5c06\u4e8c\u7ea7\u7f13\u5b58\u4e2d\u7684\u6570\u636e\u540c\u6b65\u5230\u4e00\u7ea7\u7f13\u5b58\uff08\u8fd9\u4e2a\u52a8\u4f5c\u5305\u62ec\u4e86\u5220\u9664\u548c\u52a0\u8f7d\uff09\u3002\n<p>\u5173\u4e8e\u7f13\u5b58\u7684\u5b9e\u73b0\u53c2\u8003 ResponseCacheImpl<\/li>\n<\/ol>\n<h3>\u670d\u52a1\u6ce8\u518c\u673a\u5236<\/h3>\n<p>\u670d\u52a1\u63d0\u4f9b\u8005\u3001\u670d\u52a1\u6d88\u8d39\u8005\u3001\u4ee5\u53ca\u670d\u52a1\u6ce8\u518c\u4e2d\u5fc3\u81ea\u5df1\uff0c\u542f\u52a8\u540e\u90fd\u4f1a\u5411\u6ce8\u518c\u4e2d\u5fc3\u6ce8\u518c\u670d\u52a1\uff08\u5982\u679c\u914d\u7f6e\u4e86\u6ce8\u518c\uff09\u3002\u4e0b\u56fe\u662f\u4ecb\u7ecd\u5982\u4f55\u5b8c\u6210\u670d\u52a1\u6ce8\u518c\u7684\uff1a<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/static001.infoq.cn\/resource\/image\/11\/18\/1120a85e1270610c0ac1eeba9e1d5718.png\" alt=\"\" \/><\/p>\n<p>\u6ce8\u518c\u4e2d\u5fc3\u670d\u52a1\u63a5\u6536\u5230 register \u8bf7\u6c42\u540e\uff1a<\/p>\n<ol>\n<li>\u4fdd\u5b58\u670d\u52a1\u4fe1\u606f\uff0c\u5c06\u670d\u52a1\u4fe1\u606f\u4fdd\u5b58\u5230 registry \u4e2d\uff1b<\/li>\n<li>\u66f4\u65b0\u961f\u5217\uff0c\u5c06\u6b64\u4e8b\u4ef6\u6dfb\u52a0\u5230\u66f4\u65b0\u961f\u5217\u4e2d\uff0c\u4f9b Eureka Client \u589e\u91cf\u540c\u6b65\u670d\u52a1\u4fe1\u606f\u4f7f\u7528\u3002<\/li>\n<li>\u6e05\u7a7a\u4e8c\u7ea7\u7f13\u5b58\uff0c\u5373 readWriteCacheMap\uff0c\u7528\u4e8e\u4fdd\u8bc1\u6570\u636e\u7684\u4e00\u81f4\u6027\u3002<\/li>\n<li>\u66f4\u65b0\u9608\u503c\uff0c\u4f9b\u5254\u9664\u670d\u52a1\u4f7f\u7528\u3002<\/li>\n<li>\u540c\u6b65\u670d\u52a1\u4fe1\u606f\uff0c\u5c06\u6b64\u4e8b\u4ef6\u540c\u6b65\u81f3\u5176\u4ed6\u7684 Eureka Server \u8282\u70b9\u3002<\/li>\n<\/ol>\n<h3>\u670d\u52a1\u7eed\u7ea6\u673a\u5236<\/h3>\n<p>\u670d\u52a1\u6ce8\u518c\u540e\uff0c\u8981\u5b9a\u65f6\uff08\u9ed8\u8ba4 30S\uff0c\u53ef\u81ea\u5df1\u914d\u7f6e\uff09\u5411\u6ce8\u518c\u4e2d\u5fc3\u53d1\u9001\u7eed\u7ea6\u8bf7\u6c42\uff0c\u544a\u8bc9\u6ce8\u518c\u4e2d\u5fc3\u201c\u6211\u8fd8\u6d3b\u7740\u201d\u3002<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/static001.infoq.cn\/resource\/image\/d5\/44\/d54cd75f968b71a37cbf3139ecfa6a44.png\" alt=\"\" \/><\/p>\n<p>\u6ce8\u518c\u4e2d\u5fc3\u6536\u5230\u7eed\u7ea6\u8bf7\u6c42\u540e\uff1a<\/p>\n<ol>\n<li>\u66f4\u65b0\u670d\u52a1\u5bf9\u8c61\u7684\u6700\u8fd1\u7eed\u7ea6\u65f6\u95f4\uff0c\u5373 Lease \u5bf9\u8c61\u7684 lastUpdateTimestamp;<\/li>\n<li>\u540c\u6b65\u670d\u52a1\u4fe1\u606f\uff0c\u5c06\u6b64\u4e8b\u4ef6\u540c\u6b65\u81f3\u5176\u4ed6\u7684 Eureka Server \u8282\u70b9\u3002\n<p>\u5254\u9664\u670d\u52a1\u4e4b\u524d\u4f1a\u5148\u5224\u65ad\u670d\u52a1\u662f\u5426\u5df2\u7ecf\u8fc7\u671f\uff0c\u5224\u65ad\u670d\u52a1\u662f\u5426\u8fc7\u671f\u7684\u6761\u4ef6\u4e4b\u4e00\u662f\u7eed\u7ea6\u65f6\u95f4\u548c\u5f53\u524d\u65f6\u95f4\u7684\u5dee\u503c\u662f\u4e0d\u662f\u5927\u4e8e\u9608\u503c\u3002<\/li>\n<\/ol>\n<h3>\u670d\u52a1\u6ce8\u9500\u673a\u5236<\/h3>\n<p>\u670d\u52a1<strong>\u6b63\u5e38\u505c\u6b62<\/strong>\u4e4b\u524d\u4f1a\u5411\u6ce8\u518c\u4e2d\u5fc3\u53d1\u9001\u6ce8\u9500\u8bf7\u6c42\uff0c\u544a\u8bc9\u6ce8\u518c\u4e2d\u5fc3\u201c\u6211\u8981\u4e0b\u7ebf\u4e86\u201d\u3002<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/static001.infoq.cn\/resource\/image\/81\/8e\/8112c5bf591b4a32519f142220c2c28e.png\" alt=\"\" \/><\/p>\n<p>\u6ce8\u518c\u4e2d\u5fc3\u670d\u52a1\u63a5\u6536\u5230 cancel \u8bf7\u6c42\u540e\uff1a<\/p>\n<ol>\n<li>\u5220\u9664\u670d\u52a1\u4fe1\u606f\uff0c\u5c06\u670d\u52a1\u4fe1\u606f\u4ece registry \u4e2d\u5220\u9664\uff1b<\/li>\n<li>\u66f4\u65b0\u961f\u5217\uff0c\u5c06\u6b64\u4e8b\u4ef6\u6dfb\u52a0\u5230\u66f4\u65b0\u961f\u5217\u4e2d\uff0c\u4f9b Eureka Client \u589e\u91cf\u540c\u6b65\u670d\u52a1\u4fe1\u606f\u4f7f\u7528\u3002<\/li>\n<li>\u6e05\u7a7a\u4e8c\u7ea7\u7f13\u5b58\uff0c\u5373 readWriteCacheMap\uff0c\u7528\u4e8e\u4fdd\u8bc1\u6570\u636e\u7684\u4e00\u81f4\u6027\u3002<\/li>\n<li>\u66f4\u65b0\u9608\u503c\uff0c\u4f9b\u5254\u9664\u670d\u52a1\u4f7f\u7528\u3002<\/li>\n<li>\u540c\u6b65\u670d\u52a1\u4fe1\u606f\uff0c\u5c06\u6b64\u4e8b\u4ef6\u540c\u6b65\u81f3\u5176\u4ed6\u7684 Eureka Server \u8282\u70b9\u3002\n<p>\u670d\u52a1\u6b63\u5e38\u505c\u6b62\u624d\u4f1a\u53d1\u9001 Cancel\uff0c\u5982\u679c\u662f\u975e\u6b63\u5e38\u505c\u6b62\uff0c\u5219\u4e0d\u4f1a\u53d1\u9001\uff0c\u6b64\u670d\u52a1\u7531 Eureka Server \u4e3b\u52a8\u5254\u9664\u3002<\/li>\n<\/ol>\n<h3>\u670d\u52a1\u5254\u9664\u673a\u5236<\/h3>\n<p>Eureka Server \u63d0\u4f9b\u4e86\u670d\u52a1\u5254\u9664\u7684\u673a\u5236\uff0c\u7528\u4e8e\u5254\u9664\u6ca1\u6709\u6b63\u5e38\u4e0b\u7ebf\u7684\u670d\u52a1\u3002<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/static001.infoq.cn\/resource\/image\/bd\/60\/bd003c6b9ddc4f13840443ca04920560.png\" alt=\"\" \/><\/p>\n<p>\u670d\u52a1\u7684\u5254\u9664\u5305\u62ec\u4e09\u4e2a\u6b65\u9aa4\uff0c\u9996\u5148\u5224\u65ad\u662f\u5426\u6ee1\u8db3\u670d\u52a1\u5254\u9664\u7684\u6761\u4ef6\uff0c\u7136\u540e\u627e\u51fa\u8fc7\u671f\u7684\u670d\u52a1\uff0c\u6700\u540e\u6267\u884c\u5254\u9664\u3002<\/p>\n<p><strong>\u5224\u65ad\u662f\u5426\u6ee1\u8db3\u670d\u52a1\u5254\u9664\u7684\u6761\u4ef6<\/strong><\/p>\n<p>\u6709\u4e24\u79cd\u60c5\u51b5\u53ef\u4ee5\u6ee1\u8db3\u670d\u52a1\u5254\u9664\u7684\u6761\u4ef6\uff1a<\/p>\n<ol>\n<li>\u5173\u95ed\u4e86\u81ea\u6211\u4fdd\u62a4<\/li>\n<li>\u5982\u679c\u5f00\u542f\u4e86\u81ea\u6211\u4fdd\u62a4\uff0c\u9700\u8981\u8fdb\u4e00\u6b65\u5224\u65ad\u662f Eureka Server \u51fa\u4e86\u95ee\u9898\uff0c\u8fd8\u662f Eureka Client \u51fa\u4e86\u95ee\u9898\uff0c\u5982\u679c\u662f Eureka Client \u51fa\u4e86\u95ee\u9898\u5219\u8fdb\u884c\u5254\u9664\u3002<\/li>\n<\/ol>\n<p>\u8fd9\u91cc\u6bd4\u8f83\u6838\u5fc3\u7684\u6761\u4ef6\u662f\u81ea\u6211\u4fdd\u62a4\u673a\u5236\uff0cEureka \u81ea\u6211\u4fdd\u62a4\u673a\u5236\u662f\u4e3a\u4e86\u9632\u6b62\u8bef\u6740\u670d\u52a1\u800c\u63d0\u4f9b\u7684\u4e00\u4e2a\u673a\u5236\u3002Eureka \u7684\u81ea\u6211\u4fdd\u62a4\u673a\u5236\u201c\u8c26\u865a\u201d\u7684\u8ba4\u4e3a\u5982\u679c\u5927\u91cf\u670d\u52a1\u90fd\u7eed\u7ea6\u5931\u8d25\uff0c\u5219\u8ba4\u4e3a\u662f\u81ea\u5df1\u51fa\u95ee\u9898\u4e86\uff08\u5982\u81ea\u5df1\u65ad\u7f51\u4e86\uff09\uff0c\u4e5f\u5c31\u4e0d\u5254\u9664\u4e86\uff1b\u53cd\u4e4b\uff0c\u5219\u662f Eureka Client \u7684\u95ee\u9898\uff0c\u9700\u8981\u8fdb\u884c\u5254\u9664\u3002\u800c<strong>\u81ea\u6211\u4fdd\u62a4\u9608\u503c\u662f\u533a\u5206 Eureka Client \u8fd8\u662f Eureka Server \u51fa\u95ee\u9898\u7684\u4e34\u754c\u503c\uff1a\u5982\u679c\u8d85\u51fa\u9608\u503c\u5c31\u8868\u793a\u5927\u91cf\u670d\u52a1\u53ef\u7528\uff0c\u5c11\u91cf\u670d\u52a1\u4e0d\u53ef\u7528\uff0c\u5219\u5224\u5b9a\u662f Eureka Client \u51fa\u4e86\u95ee\u9898\u3002\u5982\u679c\u672a\u8d85\u51fa\u9608\u503c\u5c31\u8868\u793a\u5927\u91cf\u670d\u52a1\u4e0d\u53ef\u7528\uff0c\u5219\u5224\u5b9a\u662f Eureka Server \u51fa\u4e86\u95ee\u9898<\/strong>\u3002<\/p>\n<p>\u6761\u4ef6 1 \u4e2d\u5982\u679c\u5173\u95ed\u4e86\u81ea\u6211\u4fdd\u62a4\uff0c\u5219\u7edf\u7edf\u8ba4\u4e3a\u662f Eureka Client \u7684\u95ee\u9898\uff0c\u628a\u6ca1\u6309\u65f6\u7eed\u7ea6\u7684\u670d\u52a1\u90fd\u5254\u9664\u6389\uff08\u8fd9\u91cc\u6709\u5254\u9664\u7684\u6700\u5927\u503c\u9650\u5236\uff09\u3002<\/p>\n<p>\u8fd9\u91cc\u6bd4\u8f83\u96be\u7406\u89e3\u7684\u662f\u9608\u503c\u7684\u8ba1\u7b97\uff1a<\/p>\n<ul>\n<li>\u81ea\u6211\u4fdd\u62a4\u9608\u503c = \u670d\u52a1\u603b\u6570 * \u6bcf\u5206\u949f\u7eed\u7ea6\u6570 * \u81ea\u6211\u4fdd\u62a4\u9608\u503c\u56e0\u5b50\u3002<\/li>\n<li>\u6bcf\u5206\u949f\u7eed\u7ea6\u6570 =\uff0860S\/ \u5ba2\u6237\u7aef\u7eed\u7ea6\u95f4\u9694\uff09<\/li>\n<\/ul>\n<p>\u6700\u540e\u81ea\u6211\u4fdd\u62a4\u9608\u503c\u7684\u8ba1\u7b97\u516c\u5f0f\u4e3a\uff1a<\/p>\n<p>\u81ea\u6211\u4fdd\u62a4\u9608\u503c = \u670d\u52a1\u603b\u6570 * \uff0860S\/ \u5ba2\u6237\u7aef\u7eed\u7ea6\u95f4\u9694\uff09 * \u81ea\u6211\u4fdd\u62a4\u9608\u503c\u56e0\u5b50\u3002<\/p>\n<p><strong>\u4e3e\u4f8b<\/strong>\uff1a\u5982\u679c\u6709 100 \u4e2a\u670d\u52a1\uff0c\u7eed\u7ea6\u95f4\u9694\u662f 30S\uff0c\u81ea\u6211\u4fdd\u62a4\u9608\u503c 0.85\u3002<\/p>\n<p>\u81ea\u6211\u4fdd\u62a4\u9608\u503c =100 * 60 \/ 30 * 0.85 = 170\u3002<\/p>\n<p>\u5982\u679c\u4e0a\u4e00\u5206\u949f\u7684\u7eed\u7ea6\u6570 =180&gt;170\uff0c\u5219\u8bf4\u660e\u5927\u91cf\u670d\u52a1\u53ef\u7528\uff0c\u662f\u670d\u52a1\u95ee\u9898\uff0c\u8fdb\u5165\u5254\u9664\u6d41\u7a0b\uff1b<\/p>\n<p>\u5982\u679c\u4e0a\u4e00\u5206\u949f\u7684\u7eed\u7ea6\u6570 =150&lt;170\uff0c\u5219\u8bf4\u660e\u5927\u91cf\u670d\u52a1\u4e0d\u53ef\u7528\uff0c\u662f\u6ce8\u518c\u4e2d\u5fc3\u81ea\u5df1\u7684\u95ee\u9898\uff0c\u8fdb\u5165\u81ea\u6211\u4fdd\u62a4\u6a21\u5f0f\uff0c\u4e0d\u8fdb\u5165\u5254\u9664\u6d41\u7a0b\u3002<\/p>\n<p><strong>\u627e\u51fa\u8fc7\u671f\u7684\u670d\u52a1<\/strong><\/p>\n<p>\u904d\u5386\u6240\u6709\u7684\u670d\u52a1\uff0c\u5224\u65ad\u4e0a\u6b21\u7eed\u7ea6\u65f6\u95f4\u8ddd\u79bb\u5f53\u524d\u65f6\u95f4\u5927\u4e8e\u9608\u503c\u5c31\u6807\u8bb0\u4e3a\u8fc7\u671f\u3002\u5e76\u5c06\u8fd9\u4e9b\u8fc7\u671f\u7684\u670d\u52a1\u4fdd\u5b58\u5230\u96c6\u5408\u4e2d\u3002<\/p>\n<p><strong>\u5254\u9664\u670d\u52a1<\/strong><\/p>\n<p>\u5728\u5254\u9664\u670d\u52a1\u4e4b\u524d\u5148\u8ba1\u7b97\u5254\u9664\u7684\u6570\u91cf\uff0c\u7136\u540e\u904d\u5386\u8fc7\u671f\u670d\u52a1\uff0c\u901a\u8fc7\u6d17\u724c\u7b97\u6cd5\u786e\u4fdd\u6bcf\u6b21\u90fd\u516c\u5e73\u7684\u9009\u62e9\u51fa\u8981\u5254\u9664\u7684\u4efb\u52a1\uff0c\u6700\u540e\u8fdb\u884c\u5254\u9664\u3002<\/p>\n<p>\u6267\u884c\u5254\u9664\u670d\u52a1\u540e\uff1a<\/p>\n<ol>\n<li>\u5220\u9664\u670d\u52a1\u4fe1\u606f\uff0c\u4ece registry \u4e2d\u5220\u9664\u670d\u52a1\u3002<\/li>\n<li>\u66f4\u65b0\u961f\u5217\uff0c\u5c06\u5f53\u524d\u5254\u9664\u4e8b\u4ef6\u4fdd\u5b58\u5230\u66f4\u65b0\u961f\u5217\u4e2d\u3002<\/li>\n<li>\u6e05\u7a7a\u4e8c\u7ea7\u7f13\u5b58\uff0c\u4fdd\u8bc1\u6570\u636e\u7684\u4e00\u81f4\u6027\u3002\n<p>\u5b9e\u73b0\u8fc7\u7a0b\u53c2\u8003 AbstractInstanceRegistry.evict() \u65b9\u6cd5\u3002<\/li>\n<\/ol>\n<h3>\u670d\u52a1\u83b7\u53d6\u673a\u5236<\/h3>\n<p>Eureka Client \u83b7\u53d6\u670d\u52a1\u6709\u4e24\u79cd\u65b9\u5f0f\uff0c\u5168\u91cf\u540c\u6b65\u548c\u589e\u91cf\u540c\u6b65\u3002\u83b7\u53d6\u6d41\u7a0b\u662f\u6839\u636e Eureka Server \u7684\u591a\u5c42\u6570\u636e\u7ed3\u6784\u8fdb\u884c\u7684\uff1a<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/static001.infoq.cn\/resource\/image\/7a\/b6\/7a28cef8df4ee96193ae1fa36aca34b6.png\" alt=\"\" \/><\/p>\n<p>\u65e0\u8bba\u662f\u5168\u91cf\u540c\u6b65\u8fd8\u662f\u589e\u91cf\u540c\u6b65\uff0c\u90fd\u662f\u5148\u4ece\u7f13\u5b58\u4e2d\u83b7\u53d6\uff0c\u5982\u679c\u7f13\u5b58\u4e2d\u6ca1\u6709\uff0c\u5219<strong>\u5148\u52a0\u8f7d\u5230\u7f13\u5b58\u4e2d\uff0c\u518d\u4ece\u7f13\u5b58\u4e2d\u83b7\u53d6\u3002\uff08registry \u53ea\u4fdd\u5b58\u6570\u636e\u7ed3\u6784\uff0c\u7f13\u5b58\u4e2d\u4fdd\u5b58 ready \u7684\u670d\u52a1\u4fe1\u606f\u3002\uff09<\/strong><\/p>\n<ol>\n<li>\u5148\u4ece\u4e00\u7ea7\u7f13\u5b58\u4e2d\u83b7\u53d6<br \/>\na&gt; \u5148\u5224\u65ad\u662f\u5426\u5f00\u542f\u4e86\u4e00\u7ea7\u7f13\u5b58<br \/>\nb&gt; \u5982\u679c\u5f00\u542f\u4e86\u5219\u4ece\u4e00\u7ea7\u7f13\u5b58\u4e2d\u83b7\u53d6\uff0c\u5982\u679c\u5b58\u5728\u5219\u8fd4\u56de\uff0c\u5982\u679c\u6ca1\u6709\uff0c\u5219\u4ece\u4e8c\u7ea7\u7f13\u5b58\u4e2d\u83b7\u53d6<br \/>\nd&gt; \u5982\u679c\u672a\u5f00\u542f\uff0c\u5219\u8df3\u8fc7\u4e00\u7ea7\u7f13\u5b58\uff0c\u4ece\u4e8c\u7ea7\u7f13\u5b58\u4e2d\u83b7\u53d6<\/li>\n<li>\u518d\u4ece\u4e8c\u7ea7\u7f13\u5b58\u4e2d\u83b7\u53d6<br \/>\na&gt; \u5982\u679c\u4e8c\u7ea7\u7f13\u5b58\u4e2d\u5b58\u5728\uff0c\u5219\u76f4\u63a5\u8fd4\u56de\uff1b<br \/>\nb&gt; \u5982\u679c\u4e8c\u7ea7\u7f13\u5b58\u4e2d\u4e0d\u5b58\u5728\uff0c\u5219\u5148\u5c06\u6570\u636e\u52a0\u8f7d\u5230\u4e8c\u7ea7\u7f13\u5b58\u4e2d\uff0c\u518d\u4ece\u4e8c\u7ea7\u7f13\u5b58\u4e2d\u83b7\u53d6\u3002\u6ce8\u610f\u52a0\u8f7d\u65f6\u9700\u8981\u5224\u65ad\u662f\u589e\u91cf\u540c\u6b65\u8fd8\u662f\u5168\u91cf\u540c\u6b65\uff0c\u589e\u91cf\u540c\u6b65\u4ece recentlyChangedQueue \u4e2d load\uff0c\u5168\u91cf\u540c\u6b65\u4ece registry \u4e2d load\u3002<\/li>\n<\/ol>\n<h3>\u670d\u52a1\u540c\u6b65\u673a\u5236<\/h3>\n<p>\u670d\u52a1\u540c\u6b65\u673a\u5236\u662f\u7528\u6765\u540c\u6b65 Eureka Server \u8282\u70b9\u4e4b\u95f4\u670d\u52a1\u4fe1\u606f\u7684\u3002\u5b83\u5305\u62ec Eureka Server \u542f\u52a8\u65f6\u7684\u540c\u6b65\uff0c\u548c\u8fd0\u884c\u8fc7\u7a0b\u4e2d\u7684\u540c\u6b65\u3002<\/p>\n<p><strong>\u542f\u52a8\u65f6\u540c\u6b65<\/strong><\/p>\n<p><img decoding=\"async\" src=\"https:\/\/static001.infoq.cn\/resource\/image\/04\/68\/0485b748af4f3bf0061672b9c13e0b68.png\" alt=\"\" \/><\/p>\n<p>Eureka Server \u542f\u52a8\u540e\uff0c\u904d\u5386 eurekaClient.getApplications \u83b7\u53d6\u670d\u52a1\u4fe1\u606f\uff0c\u5e76\u5c06\u670d\u52a1\u4fe1\u606f\u6ce8\u518c\u5230\u81ea\u5df1\u7684 registry \u4e2d\u3002<\/p>\n<p>\u6ce8\u610f\u8fd9\u91cc\u662f\u4e24\u5c42\u5faa\u73af\uff0c\u7b2c\u4e00\u5c42\u5faa\u73af\u662f\u4e3a\u4e86\u4fdd\u8bc1\u5df2\u7ecf\u62c9\u53d6\u5230\u670d\u52a1\u4fe1\u606f\uff0c\u7b2c\u4e8c\u5c42\u5faa\u73af\u662f\u904d\u5386\u62c9\u53d6\u5230\u7684\u670d\u52a1\u4fe1\u606f\u3002<\/p>\n<p><strong>\u8fd0\u884c\u8fc7\u7a0b\u4e2d\u540c\u6b65<\/strong><\/p>\n<p><img decoding=\"async\" src=\"https:\/\/static001.infoq.cn\/resource\/image\/b6\/64\/b612ee78ac0703851b59bac9ca3b3564.png\" alt=\"\" \/><\/p>\n<p>\u5f53 Eureka Server \u8282\u70b9\u6709 register\u3001renew\u3001cancel \u8bf7\u6c42\u8fdb\u6765\u65f6\uff0c\u4f1a\u5c06\u8fd9\u4e2a\u8bf7\u6c42\u5c01\u88c5\u6210 TaskHolder \u653e\u5230 acceptorQueue \u961f\u5217\u4e2d\uff0c\u7136\u540e\u7ecf\u8fc7\u4e00\u7cfb\u5217\u7684\u5904\u7406\uff0c\u653e\u5230 batchWorkQueue \u4e2d\u3002<\/p>\n<p><code>TaskExecutor.BatchWorkerRunnable<\/code>\u662f\u4e2a\u7ebf\u7a0b\u6c60\uff0c\u4e0d\u65ad\u7684\u4ece batchWorkQueue \u961f\u5217\u4e2d poll \u51fa TaskHolder\uff0c\u7136\u540e\u5411\u5176\u4ed6 Eureka Server \u8282\u70b9\u53d1\u9001\u540c\u6b65\u8bf7\u6c42\u3002<\/p>\n<p>\u8fd9\u91cc\u7701\u7565\u4e86\u4e24\u4e2a\u90e8\u5206\uff1a<\/p>\n<ul>\n<li>\u4e00\u4e2a\u662f\u5728 acceptorQueue \u5411 batchWorkQueue \u8f6c\u5316\u65f6\uff0c\u7701\u7565\u4e86\u4e2d\u95f4\u7684 processingOrder \u548c pendingTasks \u8fc7\u7a0b\u3002<\/li>\n<li>\u53e6\u4e00\u4e2a\u662f\u5f53\u540c\u6b65\u5931\u8d25\u65f6\uff0c\u4f1a\u5c06\u5931\u8d25\u7684 TaskHolder \u4fdd\u5b58\u5230 reprocessQueue \u4e2d\uff0c\u91cd\u8bd5\u5904\u7406\u3002<\/li>\n<\/ul>\n<h2>\u5199\u5728\u6700\u540e<\/h2>\n<p>\u5bf9\u5fae\u670d\u52a1\u89e3\u51b3\u65b9\u6848 Dubbo \u548c Spring Cloud \u7684\u5bf9\u6bd4\u975e\u5e38\u591a\uff0c\u8fd9\u91cc\u5bf9\u6ce8\u518c\u4e2d\u5fc3\u505a\u4e2a\u7b80\u5355\u5bf9\u6bd4\u3002<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/static001.infoq.cn\/resource\/image\/ef\/c4\/ef69164a4afb2198cf4468c82f4a6cc4.png\" alt=\"\" \/><\/p>\n<table>\n<thead>\n<tr>\n<th><\/th>\n<th>Zookeeper<\/th>\n<th>Eureka<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>\u8bbe\u8ba1\u539f\u5219<\/td>\n<td>CP<\/td>\n<td>AP<\/td>\n<\/tr>\n<tr>\n<td>\u4f18\u70b9<\/td>\n<td>\u6570\u636e\u5f3a\u4e00\u81f4<\/td>\n<td>\u670d\u52a1\u9ad8\u53ef\u7528<\/td>\n<\/tr>\n<tr>\n<td>\u7f3a\u70b9<\/td>\n<td>\u7f51\u7edc\u5206\u533a\u4f1a\u5f71\u54cd Leader \u9009\u4e3e\uff0c\u8d85\u8fc7\u9608\u503c\u540e\u96c6\u7fa4\u4e0d\u53ef\u7528<\/td>\n<td>\u670d\u52a1\u8282\u70b9\u95f4\u7684\u6570\u636e\u53ef\u80fd\u4e0d\u4e00\u81f4\uff1b Client-Server \u95f4\u7684\u6570\u636e\u53ef\u80fd\u4e0d\u4e00\u81f4\uff1b<\/td>\n<\/tr>\n<tr>\n<td>\u9002\u7528\u573a\u666f<\/td>\n<td>\u5355\u673a\u623f\u96c6\u7fa4\uff0c\u5bf9\u6570\u636e\u4e00\u81f4\u6027\u8981\u6c42\u8f83\u9ad8<\/td>\n<td>\u4e91\u673a\u623f\u96c6\u7fa4\uff0c\u8de8\u8d8a\u591a\u673a\u623f\u90e8\u7f72\uff1b\u5bf9\u6ce8\u518c\u4e2d\u5fc3\u670d\u52a1\u53ef\u7528\u6027\u8981\u6c42\u8f83\u9ad8<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n<div data-v-208ee46f=\"\" data-v-9f38139c=\"\"><\/div>\n<div class=\"artcile-copyright\" data-v-208ee46f=\"\" data-v-9f38139c=\"\">\u6587\u7ae0\u7248\u6743\u5f52\u6781\u5ba2\u90a6\u79d1\u6280 InfoQ \u6240\u6709<\/div>\n","protected":false},"excerpt":{"rendered":"<p>\u5fae\u670d\u52a1\u67b6\u6784\u4e2d\u6700\u6838\u5fc3\u7684\u90e8\u5206\u662f\u670d\u52a1\u6cbb\u7406\uff0c\u670d\u52a1\u6cbb\u7406\u6700\u57fa\u7840\u7684\u7ec4\u4ef6\u662f\u6ce8\u518c\u4e2d\u5fc3\u3002\u968f\u7740\u5fae\u670d\u52a1\u67b6\u6784\u7684\u53d1\u5c55\uff0c\u51fa\u73b0\u4e86\u5f88\u591a\u5fae\u670d\u52a1\u67b6\u6784\u7684\u89e3\u51b3\u65b9\u6848\uff0c\u5176\u4e2d\u5305\u62ec\u6211\u4eec\u719f\u77e5\u7684 Dubbo \u548c Spring Cloud\u3002 \u5173\u4e8e\u6ce8\u518c\u4e2d\u5fc3\u7684\u89e3\u51b3\u65b9\u6848\uff0cdubbo \u652f\u6301\u4e86 Zookeeper\u3001Redis\u3001Multicast \u548c Simple\uff0c\u5b98\u65b9\u63a8\u8350 Zookeeper\u3002Spring Cloud \u652f\u6301\u4e86 Zookeeper\u3001Consul \u548c Eureka\uff0c\u5b98\u65b9\u63a8\u8350 Eureka\u3002 \u4e24\u8005\u4e4b\u6240\u4ee5\u63a8\u8350\u4e0d\u540c\u7684\u5b9e\u73b0\u65b9\u5f0f\uff0c\u539f\u56e0\u5728\u4e8e\u7ec4\u4ef6\u7684\u7279\u70b9\u4ee5\u53ca\u9002\u7528\u573a\u666f\u4e0d\u540c\u3002\u7b80\u5355\u6765\u8bf4\uff1a ZK \u7684\u8bbe\u8ba1\u539f\u5219\u662f 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