Chord: A Scalable Peer-to-peer Lookup Service for Internet Applications

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English
Tiếng Việt

Abstract

A fundamental problem that confronts peer-to-peer applications is to efficiently locate the node that stores a particular data item. This paper presents Chord, a distributed lookup protocol that addresses this problem. Chord provides support for just one operation: given a key, it maps the key onto a node. Data location can be easily implemented on top of Chord by associating a key with each data item, and storing the key/data item pair at the node to which the key maps. Chord adapts efficiently as nodes join and leave the system, and can answer queries even if the system is continuously changing. Results from theoretical analysis, simulations, and experiments show that Chord is scalable, with communication cost and the state maintained by each node scaling logarithmically with the number of Chord nodes.

Chord: Một Dịch vụ Tra cứu Peer-to-peer Có khả năng Mở rộng cho các Ứng dụng Internet

Ion Stoica\*, Robert Morris, David Karger, M. Frans Kaashoek, Hari Balakrishnan† MIT Laboratory for Computer Science chord@lcs.mit.edu http://pdos.lcs.mit.edu/chord/

Tóm tắt Một vấn đề cơ bản mà các ứng dụng peer-to-peer phải đối mặt là định vị hiệu quả nút lưu trữ một mục dữ liệu cụ thể. Bài báo này trình bày Chord, một giao thức tra cứu phân tán giải quyết vấn đề này. Chord chỉ hỗ trợ một thao tác duy nhất: với một khóa cho trước, nó ánh xạ khóa đó tới một nút. Việc định vị dữ liệu có thể dễ dàng được triển khai trên Chord bằng cách liên kết một khóa với mỗi mục dữ liệu và lưu cặp khóa/mục dữ liệu tại nút mà khóa ánh xạ tới. Chord thích nghi hiệu quả khi các nút tham gia và rời khỏi hệ thống, đồng thời có thể trả lời các truy vấn ngay cả khi hệ thống liên tục thay đổi. Các kết quả từ phân tích lý thuyết, mô phỏng và thử nghiệm cho thấy Chord có khả năng mở rộng, với chi phí truyền thông và trạng thái được duy trì bởi mỗi nút tăng theo cấp số logarit với số lượng nút Chord.

1 Introduction

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2 Related Work

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3 System Model

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4 The Base Chord Protocol

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5 Concurrent Operations and Failures

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6 Simulation and Experimental Results

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7 Future Work

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8 Conclusion

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Acknowledgments

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Read off the page by a vision model reading the page images using olmOCR-2-7B-1025-FP8. Translated into Tiếng Việt by gpt-5, against glossary version 7. Translated from the English.