愛奇藝私有云Serverless實踐

{"type":"doc","content":[{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"近日，愛奇藝技術產品團隊舉辦了“i技術會”線下技術沙龍，本次技術會的主題是“雲原生落地探索與實踐”，邀請快手、百度和字節跳動的技術專家，與愛奇藝技術產品團隊共同分享與探討雲原生落地的實踐經驗。"}]},{"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":"其中，來自愛奇藝的技術專家尚劉炎爲大家帶來了愛奇藝私有云Serverless實踐的分享，本場分享一共有三個關鍵詞：Serverless、私有云和落地實踐。"}]},{"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":"本次分享的第一部分內容是帶大家瞭解Serverless這個概念。第二部分說明下公有云和私有云下Serverless服務的區別。第三部分是愛奇藝具體落地的一些策略和方案，及其經驗分享。"}]},{"type":"heading","attrs":{"align":null,"level":2},"content":[{"type":"text","text":"什麼是Serverless"}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"在介紹什麼是Serverless的時候，希望通過回答一些問題幫助大家瞭解什麼是Serverless。一個最好的問題就是——"},{"type":"text","marks":[{"type":"strong"}],"text":"Serverless是不是就是FaaS？"}]},{"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":"下面是維基百科對“Serverless”的中文和英文的解釋："}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"image","attrs":{"src":"https:\/\/static001.geekbang.org\/infoq\/82\/824aae06c8ed0b4eaba12eab065ce6c4.png","alt":"圖片","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\/d1\/d1af94d7ecf18fd61e849368b56cfc85.png","alt":"圖片","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":"中文解釋爲Serverless就是FaaS；英文解釋就比較豐富了，它把Serverless分成Runtime和Databases，FaaS相當於是Runtime類別的產品，所以這方面的誤解還是挺多的。"}]},{"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":"現在市面上的一些Serverless服務，比如AWS和阿里雲:"}]},{"type":"heading","attrs":{"align":null,"level":3},"content":[{"type":"text","text":"AWS Serverless服務："}]},{"type":"image","attrs":{"src":"https:\/\/static001.geekbang.org\/infoq\/3b\/3baa92a3ccf2b1ceb1891091225f5896.png","alt":"圖片","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\/d9\/d929bea1bcd54ddcd0ed0a60335c4548.png","alt":"圖片","title":null,"style":[{"key":"width","value":"75%"},{"key":"bordertype","value":"none"}],"href":null,"fromPaste":true,"pastePass":true}},{"type":"heading","attrs":{"align":null,"level":3},"content":[{"type":"text","text":"阿里雲Serverless服務："}]},{"type":"image","attrs":{"src":"https:\/\/static001.geekbang.org\/infoq\/b2\/b2033366b5a887ad9b0fc28f7df527d5.png","alt":"圖片","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},"content":[{"type":"text","text":"阿里雲目前官網上的展示還不是很全面，實際上它的服務還要更多一些，與AWS差不多，但AWS區分比較合理，把Serverless服務分計算、應用集成、數據分佈，阿里也有一個劃分，不過沒有AWS的那麼詳細。"}]},{"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":"到這裏就可以發現FaaS和Serverless有些區別了，整體來看FaaS服務，是Serverless計算服務的一部分。除此之外，亞馬遜還提供了ECS、EKS，也是可以提供Serverless計算的服務。另外應用集成在這方面的成果就更豐富了，最常用的是SQS，不需要關注資源的一個消息中間件，數據存儲也有Serverless的DB。"}]},{"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":"目前來講，提供無需關注底層基礎設施的服務可以稱爲Serverless，"},{"type":"text","marks":[{"type":"strong"}],"text":"那麼無需關注底層基礎設施可以怎麼理解呢？"}]},{"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":"首先是我們不去維護這下面的底層基礎設施；其次是不關心它的資源的擴展情況，就像DB，我們知道它是可能運行在K8S集羣上，也知道它有內存有CPU有磁盤，但我們並不需要關心這些資源的情況。"}]},{"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":"那麼"},{"type":"text","marks":[{"type":"strong"}],"text":"公司在做私有云時想去實施Serverless建設應該從哪兒開始做起？"},{"type":"text","text":"這也是一個問題。"}]},{"type":"heading","attrs":{"align":null,"level":2},"content":[{"type":"text","text":"私有云和公有云的Serverless服務的區別"}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"現在有這麼多Serverless服務，但在2018年的時候是沒有這麼多選擇的，而且我們看到維基百科(中文)從2019年沒有再更新，這不是偶然，因爲在這之前我們認爲Serverless就是FaaS。所以2018年，愛奇藝開始實施Serverless，"},{"type":"text","marks":[{"type":"strong"}],"text":"第一件事兒就是把FaaS搭建起來"},{"type":"text","text":"。"}]},{"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":"在2018年，開源社區可參考的內容也是很少的。現在比較成熟的Serverless有兩個方案，Knative和OpenFaaS，Knative在2018年1月31號纔開源發佈出來，OpenFaaS當初是個人項目，後來才成立了公司。"}]},{"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":"技術選型的時候我們也比較糾結，因爲沒有好的方案。作爲內部創新的項目，公司投入的人力非常少，我們當時特別希望社區能夠提供一些支持，但當時整個社區並沒有成熟的方案，也不確定未來哪個方案會成爲主流。後來我們選擇了Fn這個項目，現在已經16個月都沒有更新了，項目已經確定停更了。當時選擇這個項目，主要有以下幾點考量："}]},{"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","marks":[{"type":"strong"}],"text":"第一"},{"type":"text","text":"，Fn項目是Oracle開源的Serverless項目，我們覺得Oracle是一家ToB端比較領先的公司，應該比較擅長做這類服務，項目發展應該會很順利；"}]},{"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","marks":[{"type":"strong"}],"text":"第二"},{"type":"text","text":"，當時公司容器編排用Mesos，Fn在Mesos上的支持比較多。"}]},{"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":"綜上所述，Fn項目對當時的愛奇藝來說是最合適的選擇。"}]},{"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":"我們在Fn上面做了一些公司內部服務的集成，完成MVP版本後，想找一些業務作爲抓手驅動後續開發。當時參考了AWS的一個經典案例，彈性的圖片resize服務。這個案例非常貼切FaaS應用場景：FaaS的優勢是無需管理服務器,圖片resize也是比較簡單的函數操作，不需要很多的代碼去完成；另外FaaS本身是持續擴展的，其優勢是按調用次數計費，所以對於很多公司，尤其初創公司來說這是非常好的應用場景。"}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"愛奇藝也有圖片服務，我們也覺得這個案例很適合我們作爲第一個可以落地的場景推廣。但我們在和圖片服務團隊溝通的時候發生了一個比較戲劇化的場面。"}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"image","attrs":{"src":"https:\/\/static001.geekbang.org\/infoq\/ee\/eea89c4ee1f25f42b29a5fe3d3205b27.png","alt":"圖片","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":"這次對接後，我們意識到，公有云推廣的方案在私有云不好使，主要原因有兩個："}]},{"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":"1）FaaS確實做不了複雜的功能(2018年)，而且容器編排服務已經很好用了（對後端工程師來說）；"}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"2）按需付費這些功能，根本不在私有云的考慮範圍之內。"}]},{"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","marks":[{"type":"strong"}],"text":"那麼，私有云真的需要Serverless嗎？"}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","marks":[{"type":"strong"}],"text":"如果需要，是什麼形式的呢？"}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","marks":[{"type":"strong"}],"text":"私有云真的需要Serverless嗎？"}]},{"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":"首先，公有云的FaaS的作用是爲了將其他公有云服務連接起來。它是雲計算成熟到一定程度(雲原生)的產物，而私有云一般達不到這種成熟度。並且，私有云推進基礎架構達到公有云的程度也不現實，因爲兩者目的不同。"}]},{"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","marks":[{"type":"strong"}],"text":"是不是我們提升私有云的基礎架構體系的成熟度，就可以再做Serverless這個方案了？"}]},{"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":"其實這也不現實，因爲從2015年到現在，公有云已經達到規模效應了。私有云做架構的時候有意的規避了這個問題，要和公有云做一些區別，更多的支撐我們自己的業務。所以，從這個角度來看，我們在做Serverless方案的時候如果參照公有云，其實是走不通的。"}]},{"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","marks":[{"type":"strong"}],"text":"如果私有云真的需要一種Serverless服務，它應該是什麼樣的？"}]},{"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":"公有云用Serverless連接公有云的服務，那麼私有云Serverless應該是連接私有云特有的服務、不能被公有云取代的服務，更多是應用級別的服務——私有云事件驅動的路線；"}]},{"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，對於後端工程師的技術棧來說，私有云的FaaS可能不那麼便捷，但對於前端來說就不一樣了，因爲前端對服務端不那麼瞭解。另外，我們可以看到阿里雲的Serverless的最佳實踐和案例上，都有很多的前端BaaS方向，這兩年前端比較大的趨勢也是這個方向；"}]},{"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":"最後，Serverless對於私有云的幫助，主要是生產力的提升，而不是公有云宣傳的資源成本節約。"}]},{"type":"heading","attrs":{"align":null,"level":2},"content":[{"type":"text","text":"如何落地Serverless方案？"}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","marks":[{"type":"strong"}],"text":"首先要因地制宜。"}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"我們本身團隊在基礎架構部門，離前端比較遠，應用事件驅動的方向比較適合我們團隊推進。"}]},{"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":"公有云也有事件驅動方向的產品，比如AWS的EventBridge（下圖），一種Serverless的事件總線服務。"}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"image","attrs":{"src":"https:\/\/static001.geekbang.org\/infoq\/fb\/fb65341caad392dc2dd596f769c195bf.png","alt":"圖片","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":"這個服務不僅可以通過事件觸發服務，還可以做事件的組合。舉個愛奇藝的實際例子，一個視頻生產完成、人工審覈通過且AI審覈沒有通過，當這三個事件都發生之後會觸發人工再審覈的操作。如果不用事件總線服務，這個流程其實很麻煩，要先緩存到這幾個事件，另外中間可能會接收大量的消息，這時還要單獨做一個組件去完成。使用Serverless的事件總線服務，可以節省我們很多維護成本，提升開發的效率，還能幫助架構做一些解耦。"}]},{"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":"2019年公司推進中臺化，團隊希望能在中臺化的過程中落實這個技術方案。"}]},{"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":"分析中臺的架構後，我們發現很多中臺並不產生新的、更有效的服務，它只是把原有的服務組合起來。隨着中臺化演進，我們可以和負責中臺的團隊協作，讓他們把事件接入事件總線。我們有這個想法，也找了團隊去溝通，但還是有新的問題出現。中臺業務團隊的目的是爲了解決中臺化的問題，沒有多餘的精力幫助我們開放事件。於是我們又進一步分析了中臺團隊的主要問題。起先我們認爲，做中臺的架構無非是把原有的單體服務連接起來，但實際上，這些單體服務本身提供的服務的接口是異構的。另外，把這些服務組合起來看起來只是一個工作流，但可觀測性、任務重試、超時、熔斷等等一系列問題也要解決。"}]},{"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":"於是我們想是不是可以設計一個Serverless服務，它可以支持不同的服務的調度，無需運維的，同時它的可觀測性是自動生成的。這樣的服務可以幫助中臺團隊解決工作上的問題。在實際應用中，無論AWS還是阿里雲也有這樣的服務，比如AWS的做Step Function。我們解決這個問題做的服務，就是Airworkflow。"}]},{"type":"image","attrs":{"src":"https:\/\/static001.geekbang.org\/infoq\/d6\/d6b67b129f88668216f2e6092a647c3a.png","alt":"圖片","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":"center","origin":null},"content":[{"type":"text","text":"圖注：爲中颱而生的Serverless服務——Airworkflow"}]},{"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":"工作流通過一個狀態機描述語言進行定義，私有云沒有必要和公有云一樣，只需儘量解決自己的問題，採用了CNCF開源的Workflow標準，選擇其中應用比較廣泛的狀態優先實現；按照這個標準在底層用基於Knative Serving和Eventing基礎上做的實現。"}]},{"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","marks":[{"type":"strong"}],"text":"下面是觀測性問題的改造。"}]},{"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":"在觀測性問題方面，Airworkflow方案有特別大的便捷性，用戶在描述狀態機的時候，相當於直接將業務標籤提前打好了，代碼與狀態機配置相關聯，所以標籤可以自動生成，真正實現了，寫完代碼以後，後續的可觀測性內容是按照業務自動構建的。這對於中臺來說是一個特別便捷的一個功能。"}]},{"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":"另外前文提到，我們團隊想讓中臺團隊把中間事件開放出來，所以其實在做workflow標準時，我們把這點也考慮進去了。如下圖黃色標記的，中間有一個關鍵字可以把結果按照一定標準格式開放出來。"}]},{"type":"image","attrs":{"src":"https:\/\/static001.geekbang.org\/infoq\/2a\/2a6f0cc2b450fdf8d838ba1274257dcd.png","alt":"圖片","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","marks":[{"type":"strong"}],"text":"那麼什麼是業務事件？"}]},{"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":"業務事件，是私有云、公有云最大的區別。公有云的事件是消息隊列裏面會多一條數據，而私有云事件，是一個服務級別的事件，是創建定單成功，支付成功等業務事件。如果開發的時候接收的都是這些事件，那麼我們的很多應用將非常容易擴展。"}]},{"type":"image","attrs":{"src":"https:\/\/static001.geekbang.org\/infoq\/41\/41583bf2c9232825dff2abb6034913c0.png","alt":"圖片","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":"center","origin":null},"content":[{"type":"text","text":"圖注：業務事件"}]},{"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":"如上圖所示，最右邊紫色的塊是log，是打好標籤的，可以很清楚的定義出屬於哪個步驟。"}]},{"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":"爲了便於用戶接入，我們也開發了一個Dashboard平臺。"}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"image","attrs":{"src":"https:\/\/static001.geekbang.org\/infoq\/b4\/b49243ffe82d9537400c766f37daaf67.png","alt":"圖片","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":"center","origin":null},"content":[{"type":"text","text":"圖注：Airworkflow Dashboard"}]},{"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":"在對接Airworkflow的時候，團隊發現大家對Serverless的接受程度還是不高。雖然也有業務方願意接入，但都要我們做演示，把前因後果講述一遍，拿技術文檔一步步指引操作，整個對接週期一般要一週左右，換個人又得重新來一遍。"}]},{"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":"公有云在做推廣的時候也遇到一樣的問題，他們解決的方法就是頻繁的佈道，這個方法需要很多人力，不適合私有云。"}]},{"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":"上述問題不只我們面臨過，比如滴滴，在業務推廣初期面臨過沒有司機就沒有用戶，沒有用戶也沒有司機的問題，這個問題的解決需要建立起正向的循環，我們也希望通過構建服務，完成我們的增長飛輪。"}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"image","attrs":{"src":"https:\/\/static001.geekbang.org\/infoq\/75\/757533149c32d280284095529285e311.png","alt":"圖片","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":"center","origin":null},"content":[{"type":"text","text":"圖注:構建增長飛輪"}]},{"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":"現在Airworkflow已經有服務接入了，團隊目前正在做事件總線Eventgateway。事件總線做完以後，可以推動我們FaaS迭代。"}]},{"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":"用戶在用這些服務的同時，對Serverless接受程度會提高。接受度的提高會催使他使用別的服務，這樣我們最左邊的循環就能打通了。"}]},{"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":"但這個打通的成本是什麼？是我們不遺餘力的推廣，甚至手把手的教用戶改造。由於人力的限制，我們希望構建一個生態，讓已經接入的用戶，把他們的經驗推廣出去。"}]},{"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":"後續我們會做一個Dev App store，將一些事件和Function，以打包的形式作爲內部開源的產品交付給用戶。用戶通過這種低門檻的方式，接觸瞭解Serverless，進而提高對Serverless服務的接受程度，後續就更容易使用其他服務，這樣互相促進，完成我們整個的服務的閉環。"}]},{"type":"heading","attrs":{"align":null,"level":2},"content":[{"type":"text","text":"Q&A"}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","marks":[{"type":"strong"}],"text":"提問"},{"type":"text","text":"：目前Serverless平臺都是支持無狀態函數的，未來會不會支持有狀態函數？"}]},{"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","marks":[{"type":"strong"}],"text":"劉炎"},{"type":"text","text":"：有狀態的服務相對無狀態要複雜的多，如果你的服務是有狀態的，應該先構建爲單體的微服務，業務場景經常要把這些微服務連接起來，這個“連接起來”就是我們Airworkflow要做的，目前最佳實踐是這樣的。"}]},{"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":"本文轉載自：愛奇藝技術產品團隊（ID：iQIYI-TP）"}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"原文鏈接："},{"type":"link","attrs":{"href":"https:\/\/mp.weixin.qq.com\/s\/w-HptPgmb3VQocok-PPtew","title":"xxx","type":null},"content":[{"type":"text","text":"愛奇藝私有云Serverless實踐"}]}]}]}