Spring Cloud 2020.0.0 正式發佈，對開發者來說意味着什麼？

{"type":"doc","content":[{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"image","attrs":{"src":"https://static001.geekbang.org/infoq/2f/2f1b7b2df020b6b555e746cf143ce94d.png","alt":"頭圖.png","title":null,"style":[{"key":"width","value":"75%"},{"key":"bordertype","value":"none"}],"href":null,"fromPaste":true,"pastePass":true}},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"作者 | ","attrs":{}}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"YourBatman  在線教育領域資深架構師，Spring Framework 開源貢獻者","attrs":{}}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"冷冷  雲集架構師、開源項目 pig 負責人、Spring Cloud Alibaba Committer","attrs":{}}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"來源|","attrs":{}},{"type":"link","attrs":{"href":"https://mp.weixin.qq.com/s/V6K6Ehq8xdRwnMbKJWG7_g","title":""},"content":[{"type":"text","text":"阿里巴巴雲原生公衆號","attrs":{}}]}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"北京時間 2020 年 12 月 22 日深夜，","attrs":{}},{"type":"codeinline","content":[{"type":"text","text":"Spring Cloud 2020.0.0","attrs":{}}],"attrs":{}},{"type":"text","text":" 版本正式發佈。2020.0.0 是第一個使用新版本命名方案的發命名的 Spring Cloud 發行版本。除了肉眼可見的更開發者友好的命名方式，這次發佈全面拋棄了 Netflix 技術棧，並且是一個長期維護的主要版本。這對開發者來說意味着什麼呢？","attrs":{}},{"type":"text","marks":[{"type":"strong","attrs":{}}],"text":"今天我們邀請到開源社區活躍作者 YourBatman 和 Spring Cloud Alibaba committer 冷冷來和大家解讀下這次發版的重要變化，更重要的是和大家聊聊我們作爲開發者後續應該如何應對","attrs":{}},{"type":"text","text":"。","attrs":{}}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"heading","attrs":{"align":null,"level":1},"content":[{"type":"text","text":"Spring Cloud 版本管理","attrs":{}}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"在 Spring Cloud 2020.0.0 正式發佈之前，Spring Cloud 的 Release Train 名稱採用的是倫敦地鐵站名稱來命名的，並以字母表順序排列，如：Hoxton、Greenwich、Ilford 等，這種命名方式存在兩個致命問題：","attrs":{}}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"bulletedlist","content":[{"type":"listitem","content":[{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"對非英語","attrs":{}},{"type":"text","marks":[{"type":"strong","attrs":{}}],"text":"母語","attrs":{}},{"type":"text","text":"國家，比如中國就非常不友好，無法快速理清版本號關係","attrs":{}}]}],"attrs":{}}],"attrs":{}},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"bulletedlist","content":[{"type":"listitem","content":[{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"英文字母就 26 個，倘若版本號到了 Z 以後呢？如何繼續發展？","attrs":{}}]}],"attrs":{}}],"attrs":{}},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"image","attrs":{"src":"https://static001.geekbang.org/infoq/7e/7e9037eafc0b493823696c3ca09531be.png","alt":"1.png","title":null,"style":[{"key":"width","value":"75%"},{"key":"bordertype","value":"none"}],"href":null,"fromPaste":true,"pastePass":true}},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"Spring Cloud 遵循 ","attrs":{}},{"type":"text","marks":[{"type":"strong","attrs":{}}],"text":"Pivotal OSS support policy","attrs":{}},{"type":"text","text":" 協議對","attrs":{}},{"type":"text","marks":[{"type":"strong","attrs":{}}],"text":"主要版本","attrs":{}},{"type":"text","text":"提供三年的支持。此外，在 Spring Cloud 的主要或次要版本發佈後，若存在嚴重的 bug 和安全問題，就會再維護一段時間（6-12 個月不等）。參考以下表格：","attrs":{}}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"image","attrs":{"src":"https://static001.geekbang.org/infoq/11/119d00f4af7cb8eae1140a8c3e64a99f.jpeg","alt":"2.jpg","title":null,"style":[{"key":"width","value":"75%"},{"key":"bordertype","value":"none"}],"href":null,"fromPaste":true,"pastePass":true}},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"image","attrs":{"src":"https://static001.geekbang.org/infoq/27/27c9f585824d17e72e3101b272c737c5.jpeg","alt":"3.jpg","title":null,"style":[{"key":"width","value":"75%"},{"key":"bordertype","value":"none"}],"href":null,"fromPaste":true,"pastePass":true}},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"heading","attrs":{"align":null,"level":1},"content":[{"type":"text","text":"核心變化解讀","attrs":{}}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"Spring Cloud 2020.0.0 作爲一個","attrs":{}},{"type":"text","marks":[{"type":"strong","attrs":{}}],"text":"主要版本","attrs":{}},{"type":"text","text":"，帶來了衆多顯著的變化，其中進行了一些阻斷式更新（不向下兼容）是本文最大看點，來吧上菜。","attrs":{}}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"heading","attrs":{"align":null,"level":2},"content":[{"type":"text","text":"核心變化一：再見了，Netflix","attrs":{}}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"早在 2018 年，Spring Cloud 在其 Roadmap 裏就宣佈將要","attrs":{}},{"type":"text","marks":[{"type":"strong","attrs":{}}],"text":"終結","attrs":{}},{"type":"text","text":"的一些庫/版本，其中最重要的就是指 ","attrs":{}},{"type":"text","marks":[{"type":"strong","attrs":{}}],"text":"Spring Cloud Netflix 項目進入維護模式","attrs":{}},{"type":"text","text":"，然後計劃在 2020 年完全移除。","attrs":{}}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"Spring Cloud 做出這樣的決定其實也是不見得是主動的。我們知道 Spring Cloud 一直以來把 ","attrs":{}},{"type":"codeinline","content":[{"type":"text","text":"Netflix OSS","attrs":{}}],"attrs":{}},{"type":"text","text":" 套件作爲其官方默認的一站式解決方案，那時的 Netflix OSS 套件恨不得可以跟 Spring Cloud 劃等號。而 Netflix 公司在 2018 年前後宣佈其核心組件 Hystrix、Ribbon、Zuul、Archaius 等均進入","attrs":{}},{"type":"text","marks":[{"type":"strong","attrs":{}}],"text":"維護狀態","attrs":{}},{"type":"text","text":"。","attrs":{}}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"時至今日，Spring Cloud 2020.0 正式發佈，在這個主要版本里，按既定計劃終於對 ","attrs":{}},{"type":"codeinline","content":[{"type":"text","text":"spring-cloud-netflix","attrs":{}}],"attrs":{}},{"type":"text","text":" 動刀了。我幫你畫了幅 ","attrs":{}},{"type":"codeinline","content":[{"type":"text","text":"spring-cloud-netflix-dependencies","attrs":{}}],"attrs":{}},{"type":"text","text":" 的 xml 文件前後版本主要差異的對比圖，一目瞭然：","attrs":{}}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"image","attrs":{"src":"https://static001.geekbang.org/infoq/4a/4a3e4e91959fd94f385a9dfa080e2258.jpeg","alt":"4.jpg","title":null,"style":[{"key":"width","value":"75%"},{"key":"bordertype","value":"none"}],"href":null,"fromPaste":true,"pastePass":true}},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"bulletedlist","content":[{"type":"listitem","content":[{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"舊版本的 ","attrs":{}},{"type":"codeinline","content":[{"type":"text","text":"spring-cloud-netflix-dependencies","attrs":{}}],"attrs":{}},{"type":"text","text":" 管理着 Netflix 所有組件，包括 Hystrix、Ribbon、Zuul、Eureka 等。而自 2020.0 版本起它有且只管理 Eureka（包括 Server 和 Client）。","attrs":{}}]}],"attrs":{}}],"attrs":{}},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"heading","attrs":{"align":null,"level":2},"content":[{"type":"text","text":"核心變化二：繼續業界標準制定，完善抽象定義","attrs":{}}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"可能對於大部分 Spring Cloud 應用開發者， 對於 ","attrs":{}},{"type":"codeinline","content":[{"type":"text","text":"spring-cloud-commons","attrs":{}}],"attrs":{}},{"type":"text","text":" 模塊大概很陌生。此模塊作爲 Spring Cloud 技術棧的核心，提供了整套解決方案最重要的服務註冊與發現、負載均衡、上下文管理等的統一抽象。","attrs":{}},{"type":"codeinline","content":[{"type":"text","text":"spring cloud alibaba","attrs":{}}],"attrs":{}},{"type":"text","text":" 等全家桶實現都是 ","attrs":{}},{"type":"codeinline","content":[{"type":"text","text":"spring-cloud-commons","attrs":{}}],"attrs":{}},{"type":"text","text":" 的具體實現。此版本對上文下啓動器的默認啓動行文、負載均衡器的核心代碼進行相關的跳轉。","attrs":{}}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"codeblock","attrs":{"lang":""},"content":[{"type":"text","text":"spring-cloud-commons\n ├── actuator\n ├── circuitbreaker\n ├── discovery\n ├── hypermedia\n ├── loadbalancer\n └── serviceregistry","attrs":{}}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"heading","attrs":{"align":null,"level":2},"content":[{"type":"text","text":"核心變化三：強推 reactive 異步體系","attrs":{}}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"reactor 是 reactive（","attrs":{}},{"type":"text","marks":[{"type":"strong","attrs":{}}],"text":"反應式編程","attrs":{}},{"type":"text","text":"）的實現框架，也是 Pivotal 團隊的作品。","attrs":{}}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"無論是 Spring Cloud Gateway 還是 Spring Cloud Loadbalancer 這些都是構建在 reactor 編程之上。","attrs":{}}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"image","attrs":{"src":"https://static001.geekbang.org/infoq/e6/e60b9451c9ce4c2c9e1c9fb558e1e4cd.png","alt":"5.png","title":null,"style":[{"key":"width","value":"75%"},{"key":"bordertype","value":"none"}],"href":null,"fromPaste":true,"pastePass":true}},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"另外 Spring 官方佈道師 Josh Long 最近出版一本 《Reactive Spring》，如果想深入瞭解 reactor ,不妨深入閱讀。","attrs":{}}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"heading","attrs":{"align":null,"level":2},"content":[{"type":"text","text":"核心變化四：更好的擁抱雲原生能力","attrs":{}}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"Spring Cloud 2020 構建在 Spring Boot 2.4 之上，擁有更強的","attrs":{}},{"type":"text","marks":[{"type":"strong","attrs":{}}],"text":"配置文件處理機制","attrs":{}},{"type":"text","text":"可以非常好的適配雲原生 （例如可以直接應用 kubernetes 的 configMap ）配置；內置 Docker 鏡像構建和分層分析優化能力。","attrs":{}}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"如果團隊正在使用 kubernetes，那麼 ","attrs":{}},{"type":"codeinline","content":[{"type":"text","text":"spring-cloud-kubernetes","attrs":{}}],"attrs":{}},{"type":"text","text":" 也將是 Netflix 的不錯替代方案。","attrs":{}}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"image","attrs":{"src":"https://static001.geekbang.org/infoq/2e/2e734bf0784dafc1fec5d39726c83838.jpeg","alt":"6.jpg","title":null,"style":[{"key":"width","value":"75%"},{"key":"bordertype","value":"none"}],"href":null,"fromPaste":true,"pastePass":true}},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"heading","attrs":{"align":null,"level":1},"content":[{"type":"text","text":"組件替代方案","attrs":{}}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"Spring Cloud 既然把 Netflix 套件大刀闊斧的砍掉了，那總歸得有替代方案吧。那是必然的，Spring Cloud 團隊給我們推薦了用於替代的組件：","attrs":{}}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"image","attrs":{"src":"https://static001.geekbang.org/infoq/a9/a90805fc268b51d52b11ccf2926bbd2c.jpeg","alt":"7.jpg","title":null,"style":[{"key":"width","value":"75%"},{"key":"bordertype","value":"none"}],"href":null,"fromPaste":true,"pastePass":true}},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"heading","attrs":{"align":null,"level":2},"content":[{"type":"text","text":"Spring Cloud LoadBalancer","attrs":{}}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"以上替代品中，你可能最陌生、最好奇的是 ","attrs":{}},{"type":"codeinline","content":[{"type":"text","text":"Spring Cloud Loadbalancer","attrs":{}}],"attrs":{}},{"type":"text","text":"，它一度只是 Spring Cloud ","attrs":{}},{"type":"text","marks":[{"type":"strong","attrs":{}}],"text":"孵化器","attrs":{}},{"type":"text","text":"裏的一個小項目，並且一度擱淺。後再經過重啓，發展，現行使其偉大使命，正式用於","attrs":{}},{"type":"text","marks":[{"type":"strong","attrs":{}}],"text":"完全替換","attrs":{}},{"type":"text","text":" Ribbon，成爲 Spring Cloud 負載均衡器","attrs":{}},{"type":"text","marks":[{"type":"strong","attrs":{}}],"text":"唯一實現","attrs":{}},{"type":"text","text":"。","attrs":{}}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"image","attrs":{"src":"https://static001.geekbang.org/infoq/fd/fd70684992c4cc4488cb38b0b0f0e062.png","alt":"8.png","title":null,"style":[{"key":"width","value":"75%"},{"key":"bordertype","value":"none"}],"href":null,"fromPaste":true,"pastePass":true}},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"如圖，負載均衡抽象 ","attrs":{}},{"type":"codeinline","content":[{"type":"text","text":"LoadBalancerClient","attrs":{}}],"attrs":{}},{"type":"text","text":" 接口有兩個實現，而到了 Spring Cloud 2020.0 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提供兼容多個斷路器組件實現的抽象，允許開發人員選擇最熟悉的斷路器組件進行業務開發。","attrs":{}}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"image","attrs":{"src":"https://static001.geekbang.org/infoq/3d/3de3d07986ab9f578fb1805026d6663f.png","alt":"9.png","title":null,"style":[{"key":"width","value":"75%"},{"key":"bordertype","value":"none"}],"href":null,"fromPaste":true,"pastePass":true}},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"這裏主要介紹一下 Sentinel、Resilience4j ,  Sentinel  作爲 Spring Cloud Alibaba 重要組件，通過引入 ","attrs":{}},{"type":"text","marks":[{"type":"strong","attrs":{}}],"text":"spring-cloud-starter-alibaba-sentinel","attrs":{}},{"type":"text","text":"  即可擁有熔斷降級、流控等能力，提供圖形化控制檯，作爲同類組件 Resilience4j 是基於函數式設計的輕量級容錯庫，提供熔斷、限流、隔離等能力，不過官方提供的 spring-cloud-starter-circuitbreaker-resilience4j 插件能力有限且不能直接使用控制檯管理（若需監控需要額外的 Micrometer 服務）。","attrs":{}}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"heading","attrs":{"align":null,"level":1},"content":[{"type":"text","text":"Spring Cloud Alibaba 適配","attrs":{}}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"bulletedlist","content":[{"type":"listitem","content":[{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"由於對 Ribbon 組件的依賴，目前最新的 Spring Cloud Alibaba 2.2.3 並不能完全兼容 Spring Cloud 2020，僅需要微調即可。","attrs":{}}]}],"attrs":{}}],"attrs":{}},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"codeblock","attrs":{"lang":""},"content":[{"type":"text","text":"// 排除 Ribbon (當然也可以排查 maven 依賴)\n@EnableAutoConfiguration(excludeName = \n\"org.springframework.cloud.netflix.ribbon.RibbonAutoConfiguration\")","attrs":{}}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"bulletedlist","content":[{"type":"listitem","content":[{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"增加 spring cloud loadbalancer 依賴。","attrs":{}}]}],"attrs":{}}],"attrs":{}},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"codeblock","attrs":{"lang":""},"content":[{"type":"text","text":"\n org.springframework.cloud\n spring-cloud-starter-loadbalancer\n","attrs":{}}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"bulletedlist","content":[{"type":"listitem","content":[{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"涉及加載配置中心的服務需要 啓動 bootstrap (2020 默認關閉)。","attrs":{}}]}],"attrs":{}}],"attrs":{}},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"codeblock","attrs":{"lang":""},"content":[{"type":"text","text":"\n\n org.springframework.cloud\n spring-cloud-starter-bootstrap\n","attrs":{}}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"bulletedlist","content":[{"type":"listitem","content":[{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"以上調整可以參考 ","attrs":{}},{"type":"link","attrs":{"href":"https://github.com/pig-mesh/pig/releases/tag/v3.0.0","title":""},"content":[{"type":"text","text":"兼容適配 Spring Cloud 2020 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提供了強大的封裝和抽象能力，例如 ","attrs":{}},{"type":"codeinline","content":[{"type":"text","text":"spring-cloud-circuit-breaker","attrs":{}}],"attrs":{}},{"type":"text","text":" 提供了對常見容錯組件的封裝，在使用過程中也不需要考慮 ","attrs":{}},{"type":"codeinline","content":[{"type":"text","text":"@hystrixcommand","attrs":{}}],"attrs":{}},{"type":"codeinline","content":[{"type":"text","text":"@SentinelResource","attrs":{}}],"attrs":{}},{"type":"text","text":" 組件原生註解。","attrs":{}}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"codeblock","attrs":{"lang":""},"content":[{"type":"text","text":"public static class DemoControllerService {\n private RestTemplate rest;\n private CircuitBreakerFactory cbFactory;\n public String slow() {\n return cbFactory.create(\"slow\").run(() -> rest.getForObject(\"/slow\", String.class), throwable -> \"fallback\");\n 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","attrs":{}},{"type":"codeinline","content":[{"type":"text","text":"NacosDiscoveryClient","attrs":{}}],"attrs":{}},{"type":"text","text":"),最核心的代碼不過百行。","attrs":{}}]}],"attrs":{}}],"attrs":{}},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"image","attrs":{"src":"https://static001.geekbang.org/infoq/f6/f68a5677302b287bef47611293cd647d.png","alt":"10.png","title":null,"style":[{"key":"width","value":"75%"},{"key":"bordertype","value":"none"}],"href":null,"fromPaste":true,"pastePass":true}},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"bulletedlist","content":[{"type":"listitem","content":[{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"所以對於開發者來說無論是之前 ","attrs":{}},{"type":"codeinline","content":[{"type":"text","text":"Netflix","attrs":{}}],"attrs":{}},{"type":"text","text":" 還是選擇 ","attrs":{}},{"type":"codeinline","content":[{"type":"text","text":"Alibaba","attrs":{}}],"attrs":{}},{"type":"text","text":" 技術棧，最核心的還是把握 ","attrs":{}},{"type":"codeinline","content":[{"type":"text","text":"spring-cloud-commons","attrs":{}}],"attrs":{}},{"type":"text","text":" 抽象，掌握 Spring Cloud 標準尤爲重要。","attrs":{}}]}],"attrs":{}}],"attrs":{}},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"heading","attrs":{"align":null,"level":1},"content":[{"type":"text","text":"總結","attrs":{}}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"Spring Cloud 2020.0.0 是 Spring Cloud 的","attrs":{}},{"type":"text","marks":[{"type":"strong","attrs":{}}],"text":"主要版本","attrs":{}},{"type":"text","text":"，是非常重要的存在，升級、改變也是巨大的。特別體現在 Netflix 模塊的全部移除、Spring Cloud 啓動方式變了等等。伴隨着 Spring Boot 2.4.x 以及 Spring Cloud 2020.0 的發佈，並且棄用 Netflix OSS 套件後，必將走入一個新的","attrs":{}},{"type":"text","marks":[{"type":"strong","attrs":{}}],"text":"深度編程","attrs":{}},{"type":"text","text":"體驗，滿懷驚喜，很是期待。","attrs":{}}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"當然我們還是非常推薦大家使用 Spring Cloud Alibaba 全家桶的，目前 Spring Cloud Alibaba 開源兩年時間，已經從官方畢業，不僅在關注度、活躍上表現搶眼，更通過發佈","attrs":{}},{"type":"link","attrs":{"href":"https://mp.weixin.qq.com/s/8FJQyoY6t1FWygsCJfxSeA","title":""},"content":[{"type":"text","text":"知行動手實驗室 start.aliyun.com","attrs":{}}]},{"type":"text","text":" 提供沙箱和[ Java 工程腳手架](https://start.aliyun.com/bootstrap.html)、[Arthas 代碼診斷工具](https://arthas.aliyun.com/zh-cn/)等成爲工具鏈最完善的 Spring Cloud 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近2年GitHub開發者行爲數據","attrs":{}}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"活躍度計算公式：","attrs":{}},{"type":"link","attrs":{"href":"https://github.com/X-lab2017/github-analysis-report-2019/blob/master/REPORT.md","title":""},"content":[{"type":"text","text":"https://github.com/X-lab2017/github-analysis-report-2019/blob/master/REPORT.md","attrs":{}}]}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"heading","attrs":{"align":null,"level":2},"content":[{"type":"text","text":"推薦閱讀","attrs":{}}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"bulletedlist","content":[{"type":"listitem","content":[{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"link","attrs":{"href":"https://mp.weixin.qq.com/s?_biz=MzI2ODYxMjU4MQ==&mid=2247484290&idx=1&sn=c1559d6381687d192ef9db1dcbad25cc&scene=21#wechatredirect","title":""},"content":[{"type":"text","text":"如何平滑將註冊中心從 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生態發展趨勢，深度分享知名互聯網教育公司微服務實戰！","attrs":{}},{"type":"link","attrs":{"href":"https://www.huodongxing.com/event/2576519081911","title":""},"content":[{"type":"text","text":"點擊此處","attrs":{}}]},{"type":"text","text":"即可報名參與~","attrs":{}}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}}]}