Research on Hash Collision Resolution Strategies Based on FPGA and DDR3

• 1、Beijing University of Posts and Telecommunications, Beijing 100876

Abstract：With the rapid development of the Internet, network traffic has surged, and the complexity of data processing continues to increase. In application scenarios involving large-scale data storage and high-speed retrieval, such as network security, intrusion detection, and load balancing, the demand for real-time performance and efficiency is particularly critical. However, traditional data storage and lookup methods struggle to meet the requirements of high throughput and low latency. As a result, hash tables, known for their high-speed query capabilities, have been widely adopted in various high-performance computing systems. Hash collisions are a key issue affecting the performance of hash tables, directly determining their lookup efficiency and correctness. To address this problem, this paper analyzes existing hash collision resolution strategies and proposes an optimized collision resolution approach-the linked list space method-implemented in hardware using FPGA and DDR3. The proposed solution is verified through hardware simulation, and its applicability under different data scales is evaluated through experiments. Experimental results show that this approach effectively reduces the performance degradation caused by hash collisions, achieving an efficient and resource-optimized hash table storage structure in an FPGA environment.

Keywords： Integrated Circuit Hash Table Hash Collision FPGA DDR3