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"}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","marks":[{"type":"color","attrs":{"color":"#494949","name":"user"}}],"text":"第一，Flutter上線之後，業務發現異常。對於嚴重影響主流程的case，只能通過發版來修復相關場景問題，無法做到及時止損，這樣業務也會受損。"}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","marks":[{"type":"color","attrs":{"color":"#494949","name":"user"}}],"text":" "}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","marks":[{"type":"color","attrs":{"color":"#494949","name":"user"}}],"text":"對此，我們調研了一番，在一開始版本Flutter有支持熱修復相關場景，後考慮到蘋果審覈或者Google自身官方審覈不允許動態更新的機制，閹割了該功能，多麼痛的領悟。"}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","marks":[{"type":"color","attrs":{"color":"#494949","name":"user"}}],"text":" "}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","marks":[{"type":"color","attrs":{"color":"#494949","name":"user"}}],"text":"後來，我們又對比了業界目前動態化方案，都是曲線救國，並不能從根本上處理問題，先透露下我們的方向，開啓Flutter JIT模式來實現熱修復，不過JIT模式下性能還是有損的，魚和熊掌不能兼得。目前處於測試階段，方案待同步給大家；"}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","marks":[{"type":"color","attrs":{"color":"#494949","name":"user"}}],"text":" "}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","marks":[{"type":"color","attrs":{"color":"#494949","name":"user"}}],"text":"第二，線上指標和本地調試性能的差異。目前Flutter提供了本地測試相關性能的工具，不過和線上指標相比還是有差異的。"}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","marks":[{"type":"color","attrs":{"color":"#494949","name":"user"}}],"text":" "}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","marks":[{"type":"color","attrs":{"color":"#494949","name":"user"}}],"text":"上線指標是我們關注的重點，用戶不同機型，跑我們頁面的性能需要指標量化，這就需要我們對線上相關指標監控起來，包括異常數據 、頁面流暢度、cpu使用率、首屏時間等都是需要量化和監控起來的。"}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","marks":[{"type":"color","attrs":{"color":"#494949","name":"user"}}],"text":" "}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","marks":[{"type":"color","attrs":{"color":"#494949","name":"user"}}],"text":"有了指標，後面就是針對性的優化了，持續優化是我們不斷進步的方向；"}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","marks":[{"type":"color","attrs":{"color":"#494949","name":"user"}}],"text":" 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"}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","marks":[{"type":"color","attrs":{"color":"#494949","name":"user"}}],"text":"第四，Google大力推廣Flutter，從頻繁的版本發佈我們可以看出Google對待Flutter推廣的態度，特別基於目前國內混合開發聲音越來越高，Flutter對混合開發也是越來越重視，不斷的進行性能優化和底層能力升級。"}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","marks":[{"type":"color","attrs":{"color":"#494949","name":"user"}}],"text":" "}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","marks":[{"type":"color","attrs":{"color":"#494949","name":"user"}}],"text":"因此，綜合以上的幾點優勢我認爲隨着社區的完善和官方的大力推廣Flutter在未來跨平臺領域的市場佔有率會越來越高，發展也會越來越好。"}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","marks":[{"type":"color","attrs":{"color":"#494949","name":"user"}}],"text":" 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棄坑RN，入坑Flutter，同程旅行架構師給了這四點理由
{"type":"doc","content":[{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","marks":[{"type":"color","attrs":{"color":"#494949","name":"user"}}],"text":"作者 | 閆園園"}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","marks":[{"type":"color","attrs":{"color":"#494949","name":"user"}}],"text":"採訪嘉賓 | 同程旅行架構師李寧"}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","marks":[{"type":"color","attrs":{"color":"#494949","name":"user"}}],"text":" "}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","marks":[{"type":"color","attrs":{"color":"#121212","name":"user"}}],"text":"隨着移動互聯網的普及和快速發展，Android和iOS成爲了移動端coder的舞臺。而傳統的純原生開發已經不能滿足日益增長的業務需求。於是，APP 跨平臺開發成了現在比較熱門的方向。跨平臺開發成本低、週期短、易於上手、不用重新設計、省時省力，種種好處讓開發者們備受青睞，也讓諸多跨平臺開發工具趁勢崛起。"}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","marks":[{"type":"color","attrs":{"color":"#494949","name":"user"}}],"text":" "}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","marks":[{"type":"color","attrs":{"color":"#191919","name":"user"}}],"text":"目前，Flutter和React Native當屬此領域的佼佼者。Facebook 在 2015 年推出了 React Native，它的目標是創建移動應用程序，而不會影響應用程序的外觀和感覺。隨後，谷歌"},{"type":"text","marks":[{"type":"color","attrs":{"color":"#121212","name":"user"}}],"text":"在2017年"},{"type":"text","marks":[{"type":"color","attrs":{"color":"#191919","name":"user"}}],"text":"推出了Flutter，它的目標是解決移動開發中跨平臺、高性能問題。"}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","marks":[{"type":"color","attrs":{"color":"#494949","name":"user"}}],"text":" "}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","marks":[{"type":"color","attrs":{"color":"#191919","name":"user"}}],"text":"從這時起，新創業公司和企業就爲他們選擇其中哪個框架開發應用程序而陷入困境，這也推動了 Flutter vs React Native 的辯論。首先來說，筆者認爲這兩種框架並不存在誰要被pk掉的情況，畢竟這兩種框架在特定的需求領域都能發揮很好的作用。換句話說，我們沒必要對類似“誰是最好的語言”這種問題進行“黨派之爭”。"}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","marks":[{"type":"color","attrs":{"color":"#494949","name":"user"}}],"text":" 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"}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","marks":[{"type":"color","attrs":{"color":"#494949","name":"user"}}],"text":"上個問題已經爲大家解答了一下，這裏我再做一些補充。"}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","marks":[{"type":"color","attrs":{"color":"#494949","name":"user"}}],"text":" "}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","marks":[{"type":"color","attrs":{"color":"#494949","name":"user"}}],"text":"雖然Flutter提供了相關監測工具，但是基於release模式上線相關性能指標是無法真實監測到的，所以同程旅行爲了及時監控到相關線上指標，自研了相關性能監控組件，量化了線上相關性能指標並進行了及時的治理工作。"}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","marks":[{"type":"color","attrs":{"color":"#494949","name":"user"}}],"text":" 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"}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","marks":[{"type":"color","attrs":{"color":"#494949","name":"user"}},{"type":"strong"}],"text":"InfoQ：在Flutter 1.0發佈會上，Flutter產品經理介紹瞭如何讓Flutter運行在Web之上。那麼經過發展目前Flutter for Web的現狀是什麼？"}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","marks":[{"type":"color","attrs":{"color":"#494949","name":"user"}}],"text":" "}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","marks":[{"type":"color","attrs":{"color":"#494949","name":"user"}}],"text":"關於Flutter for Web的現狀，我認爲雖然Flutter2已經正式支持穩定版本的web應用發佈，但是包的大小、啓動速度、FPS等性能方面還不太令人滿意，而且目前混合開發模式部署到web兼容適配問題還沒有一個很好的適配方案。"}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","marks":[{"type":"color","attrs":{"color":"#494949","name":"user"}}],"text":" 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"}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","marks":[{"type":"color","attrs":{"color":"#494949","name":"user"}}],"text":"針對這個問題，基於上面的回答我先給大家總結幾點優勢："}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","marks":[{"type":"color","attrs":{"color":"#494949","name":"user"}}],"text":" "}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","marks":[{"type":"color","attrs":{"color":"#494949","name":"user"}}],"text":"第一，Flutter使用Dart語言進行開發，Dart可快速上手，簡單易學，越來越受開發者的追捧；"}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","marks":[{"type":"color","attrs":{"color":"#494949","name":"user"}}],"text":" "}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","marks":[{"type":"color","attrs":{"color":"#494949","name":"user"}}],"text":"第二，Flutter性能表現和流暢的體驗方面的優越性已經是當下跨平臺不可逾越的；"}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","marks":[{"type":"color","attrs":{"color":"#494949","name":"user"}}],"text":" "}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","marks":[{"type":"color","attrs":{"color":"#494949","name":"user"}}],"text":"第三，隨着越來越多的開發者加入到Flutter開發陣營和社區的生態的完善，開發者遇到的問題可得到越來越快速的解決；"}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","marks":[{"type":"color","attrs":{"color":"#494949","name":"user"}}],"text":" "}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","marks":[{"type":"color","attrs":{"color":"#494949","name":"user"}}],"text":"第四，Google大力推廣Flutter，從頻繁的版本發佈我們可以看出Google對待Flutter推廣的態度，特別基於目前國內混合開發聲音越來越高，Flutter對混合開發也是越來越重視，不斷的進行性能優化和底層能力升級。"}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","marks":[{"type":"color","attrs":{"color":"#494949","name":"user"}}],"text":" "}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","marks":[{"type":"color","attrs":{"color":"#494949","name":"user"}}],"text":"因此，綜合以上的幾點優勢我認爲隨着社區的完善和官方的大力推廣Flutter在未來跨平臺領域的市場佔有率會越來越高，發展也會越來越好。"}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","marks":[{"type":"color","attrs":{"color":"#494949","name":"user"}}],"text":" "}]},{"type":"heading","attrs":{"align":null,"level":2},"content":[{"type":"text","text":"採訪嘉賓介紹"}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","marks":[{"type":"color","attrs":{"color":"#494949","name":"user"}}],"text":" "}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","marks":[{"type":"color","attrs":{"color":"#494949","name":"user"}}],"text":"李寧，同程旅行架構師，2016年加入同程旅行，目前在研發中心的基礎架構部門負責 iOS 端相關架構設計工作，包括持續集成工具鏈、組件化、跨平臺等設計和開發，尤其在推動業務落地方面有豐富的實戰經驗，主導設計的 Flutter 混合框架已成爲公司推動的主流跨平臺解決方案，各項技術指標達到業內領先，已經受過相當規模的業務落地檢驗。在 App 架構設計方向有豐富的理論和實戰經驗，曾就職於金山、宜信等公司，主導了公司組件化，跨平臺框架的相關設計並推演落地。"}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","marks":[{"type":"color","attrs":{"color":"#494949","name":"user"}}],"text":" "}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","marks":[{"type":"color","attrs":{"color":"#3e3a39","name":"user"}}],"text":"李寧老師將針對如何通過技術手段，快速發現線上的異常，卡頓，Crash 以及如何量化線上性能指標等問題，分享實踐過程中的相關解決方案，希望能爲大家提供新的思路或者啓發，"},{"type":"link","attrs":{"href":"https:\/\/archsummit.infoq.cn\/2021\/shenzhen\/presentation\/3741","title":null,"type":null},"content":[{"type":"text","text":"點擊瞭解詳情。"}]}]}]}
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