臺灣博碩士論文加值系統

　　近年，微服務架構逐漸成為大型軟體首要考量的開發模式。使用微服務架構得以保障軟體在發展與疊代過程中的可用性、可擴充性以及彈性。為了滿足微服務中各個端點（Endpoints）間的溝通，在實作上也衍伸出了服務編排（Service Orchestration）與服務協調（Service Choreography）兩種設計模式。
　　本研究探討如何在PHP程式語言中應用服務編排設計模式編排與微服務端點間溝通的行為，以RESTful API架構作為主要設計考量，提出一套能夠在PHP程式語言中使用的服務編排程式庫-Anser。並透過效能評估與完整的測試案例保障程式庫的穩定性。透過此程式庫，開發人員得以便捷地採用服務編排設計模式開發基於微服務的網路應用程式。

Microservices architecture has gradually become the primary consideration for the development of large software systems with scalability and flexi-bility. The Orchestration and Choreography patterns are provided to fulfill communications among microservices. Meanwhile, PHP is the program-ming language with the highest usage rate of the global web application servers. However, there’s still lack of related PHP development resources in the field of microservices. 
This work explores how to apply service orchestration pattern to orches-trate the communications among microservice endpoints using PHP pro-gramming language. A set of service orchestration libraries, called Anser, are proposed based on  PHP and RESTful API architecture. Developers can easily  adopt orchestration design pattern by using Anser to develop web applications based on microservices. Through performance evaluation, we show that Anser could achieve lower error rate to facilitate  the stabil-ity of microservices applications.

目錄
第一章 緒論1
一、研究背景1
二、研究動機2
三、研究目的4
四、論文架構5
第二章 文獻參考6
2.1單體式架構與微服務架構6
2.2 API閘道器模式8
2.3 API組合模式10
2.4服務協調模式11
2.5服務編排模式13
2.6 HTTP協定與RESTful API15
第三章 Anser微服務架構設計17
3.1 Service Component Design18
3.2 Orchestration Component Design20
第四章 Anser微服務架構實作21
4.1 Service21
4.2 Action25
4.3 Concurrent Action28
4.4 Orchestration29
第五章 效能評估39
5.1 訂單概況評估42
5.2 訂單詳情評估43
5.3 新建訂單評估45
5.4 總結46
第六章 結論與討論47
6.1 研究貢獻47
6.2 研究限制48
6.3 研究建議48
參考文獻50


表次
表 1 最受歡迎伺服器端程式語言（2021年9月）3
表 2 常用HTTP動詞列表15
表 3 各微服務程式庫功能比較表36
表 4 測試用服務39
表 5 訂單概況10,000取樣測試42
表 6 訂單概況5000取樣測試42
表 7 訂單詳情5000取樣測試43
表 8 訂單詳情2000取樣測試44
表 9 新建訂單10,000取樣測試45
表 10 新建訂單5000取樣測試45
 
圖次
圖 1 API閘道器模式9
圖 2 API 組合模式10
圖 3服務協調模式11
圖 4 服務編排模式13
圖 5 設計圖圖示(LEGEND)17
圖 6 ANSER程式庫元件圖17
圖 7 SERVICE COMPONENT DESIGN18
圖 8 ORCHESTRATION COMPONENT DESIGN20
圖 9 以SERVICELIST紀錄微服務位置21
圖 10 實作SIMPLESERVICE類別22
圖 11 利用SIMPLESERVICE實作出微服務連線24
圖 12 使用ACTION物件25
圖 13 使ACTION進行連線並取得結果26
圖 14 實作API組合模式28
圖 15 實作ORCHESTRATOR類別30
圖 16 ANSER 服務編排模式執行方式31
圖 17 ANSER服務編排模式32
圖 18 STEP新增動態ACTION34
圖 19 編排器組織回傳結果35
圖 20 執行編排器35
圖 21 5,000次取樣錯誤率長條圖46

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