政大機構典藏-National Chengchi University Institutional Repository(NCCUR):Item 140.119/145940

政大機構典藏-National Chengchi University Institutional Repository(NCCUR):Item 140.119/145940

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政大典藏 > College of Informatics > Department of Computer Science > Theses > Item 140.119/145940

Please use this identifier to cite or link to this item: https://nccur.lib.nccu.edu.tw/handle/140.119/145940

Title:	MQTT 分散式主題切片訊息處理架構 MQTT Extensions for Distributed Topic Sharding
Authors:	姚惠馨 Yao, Hui-Hsin
Contributors:	廖峻鋒 Liao, Chun-Feng 姚惠馨 Yao, Hui-Hsin
Keywords:	物聯網 MQTT 分散式架構切片機制 Internet of Things MQTT Distribution architecture Sharding
Date:	2023
Issue Date:	2023-07-06 17:04:17 (UTC+8)
Abstract:	近年來，物聯網（Internet of Things，IoT）技術蓬勃發展，其 IoT 裝置已無所不在。這些裝置利用物聯網傳輸協定將資料傳送至服務端進行分析來提供各種服務。其中，MQTT 是最常被使用的物聯網通訊協定之一，它在設計上非常精簡且具備一定程度的彈性，非常適合在資源受限或網路頻寬有限的物聯網環境使用。然而，隨著物聯網裝置數量的快速增長，這些裝置所產出的大量訊息往往使得單一 MQTT 伺服器不堪負荷。因此，如何分散負荷以減輕單一 MQTT 伺服器的壓力，是目前必須面臨的重要課題。分散負荷的第一步通常是使用多個 MQTT 伺服器來分散交通量，但目前 MQTT 缺乏多伺服器的輔助機制，尤其是欠缺對分散式回執機制的支援。針對這個問題，本研究提出一個 MQTT 的分散式主題（Topic）切片訊息處理架構，此架構可協調將 Topic 的交通量以切片（Sharding）方式分散在多個 MQTT 伺服器中，並且提供 Topic Binding 機制，使得分散式 MQTT Broker 機制得以實現。最後，將對提出的解決方案進行實作，並評估其系統在不同使用情境下的可行性和效能表現，以驗證可在不影響原有功能的情況下提供額外功能，改善系統資源的使用情況。 In recent years, the Internet of Things (IoT) technology has been flourishing, and IoT devices are ubiquitous. These devices utilize IoT communication protocols to transmit data to the server for analysis and provide various services. Among them, MQTT is one of the most commonly used IoT communication protocols. It is designed to be lightweight and flexible, making it ideal for IoT environments with limited resources or network bandwidth. However, with the rapid growth of IoT devices, the large volume of messages generated by these devices often overwhelms a single MQTT server. Therefore, how to distribute the load and alleviate the pressure on a single MQTT server has become an important issue to address.The first step in load distribution is typically to use multiple MQTT servers to distribute the traffic. However, MQTT currently lacks built-in mechanisms for multi-server support, particularly the lack of support for distributed acknowledgment mechanisms. To address this problem, this study proposes a distributed topic sharding message processing architecture for MQTT. This architecture coordinates the distribution of topic traffic among multiple MQTT servers using sharding techniques and provides a topic binding mechanism to enable a distributed MQTT broker mechanism. Finally, the proposed solution will be implemented and evaluated for its feasibility and performance in different usage scenarios to validate its ability to provide additional functionality without affecting the existing features and improve the utilization of system resources.
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Description:	碩士國立政治大學資訊科學系 110753135
Source URI:	http://thesis.lib.nccu.edu.tw/record/#G0110753135
Data Type:	thesis
Appears in Collections:	[Department of Computer Science ] Theses

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