隨著網路技術的演進，從耳熟能詳的雲端技術、big data和近年來被認為是明日之星的IoT(Internet of Things)，不難看出當今社會對於網路的依賴。然而，當越是深入去探討一項技術時，越是能理解其不足之處，例如許多人習慣將檔案存放在雲端儲存空間上。有些檔案可能是很重要的，而這對於隱私性及機密性是一大隱憂。再者，雲端運算強調後台運算，對於即時性資料而言，前後端的工作分配的靈活度也是值得深思的議題之一，當然，對於IoT，跨平台的整合也有著不容忽視的地位。
本論文主要分成兩個部分，第一部分為提供簡易操作模式，以網頁作為跨平台和提供即時性資料傳輸的服務平台。除了解決各設備間資料傳輸的問題之外，使得用戶端能獨立開發，設計更具個人化的產品，讓系統的設計可以更具彈性。第二部分則是設計具擴充性的後端運算伺服器，提供簡單的設計方法，實作用於家庭、個人工作室等，小型私有雲端伺服器。比較隱私或需要即時處理的資料可以放在本地端伺服器，其他資料則可以透過系統將檔案放在後端儲存雲端空間。
透過這樣的系統，我們能更有效的處理即時性的資料，開發方面比較不受平台的限制，而對於擴充性，也可以使用市面常見的雲端儲存空間實現。

With the evolution of Internet technology, people use Internet more frequently than before. There are many network applications such as cloud computing, big data and IoT(Interent of Things). From these network applications, we can see that Internet is very popular and important in recent years. However, there are still many defects on network applications such as privacy. Some people usually store their important data in cloud storage, but this way may not be safe enough. Another problem is the realtime-needed computing service. Today, many cloud-related services usually work on the back end, but service may be for family. Sometimes, network applications require more flexible design that allows they compute not only on the single server. Then, cross-platform is important for IoT.
This paper has two main parts. Fist, we use web as the cross-platform and realtime data transmission service platform. This way solve the problem about cross-platform, allows developer to design the self-defined system independently, and makes the system more flexible. Second, we design a back-end server with scalability. This server provides a simple design for family, home office or private cloud. User can choose the storage when their data is private requirement. The system is scalability, so user also can combine this system and common cloud storage to make the system more powerful.
By using this system, we can compute realtime data effectively and have the platform-independent development environment. For scalability, we also can use existing tools to enhance the system.

論文審定書 i
誌謝 ii
摘要 iii
Abstract iv
目錄 v
圖次 viii
表次 x
第一章 序論 1
1.1 研究動機 1
1.2 研究目的 2
1.3 論文架構 3
第二章 研究背景 4
2.1 雲端儲存空間 4
2.1.1 Amazon Simple Storage Service 4
2.1.2 Dropbox 6
2.2 分散式檔案系統 6
2.2.1 Hadoop Distributed File System 6
2.2.2 Gluster File System 7
2.3 網路開發技術 8
2.3.1 PHP 8
2.3.2 HTML5 9
2.3.3 Javascript 10
2.4 網路資料傳輸技術 11
2.4.1 UDP和TCP 11
2.4.2 FTP 14
2.4.3 WebDav 14
2.4.4 HTTP基本操作 16
2.4.5 Socket.io 17
2.4.6 Websocket 17
2.4.7 JSON 和Protobuf 21
2.5 Database 23
2.5.1 MongoDB 23
2.6 Container與Virtual Machine 24
2.6.1 Linux Containers(LXC) 26
2.7 加密技術 27
2.7.1 對稱式加密演算法 27
2.7.2 其他演算法 29
2.7.2.1 RSA 29
2.7.2.2 MD5 30
第三章 系統架構及功能介紹 31
3.1 系統介紹 31
3.1.1 Server端系統特色與架構 32
3.1.2 Server端系統功能 34
3.1.2.1 資料回傳模式 34
3.1.2.2 資料庫函式呼叫 34
3.1.2.3 加解密 34
3.1.2.4 檔案上傳和下載 35
3.1.2.5 使用者自定義函式 35
3.1.2.6 其他功能 37
3.1.3 Client端特色與架構 37
3.1.4 Client端系統功能 40
3.1.4.1 函式宣告即使用 40
3.1.4.2 其他函式使用 41
3.2 系統開發環境 43
3.2.1 硬體開發環境 43
3.2.2 軟體需求 43
3.2.3 系統安裝說明 43
第四章 系統應用 46
第五章 系統分析與比較 52
5.1擴充性 52
5.2移植性 53
5.3跨平台 53
5.4類似平台比較 54
5.1.1 Firebase 54
5.1.2 RethinkDB 55
5.1.3 NAS 55
5.1.4 簡單比較 56
第六章 結論與未來展望 59
參考文獻 61
附錄1 66

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