At present, with the growth of demand for Internet-based operations, external network service support systems generally face problems such as inconsistent system integration, which restricts the ability of scientific research institutions and enterprises and institutions to efficiently display and trade scientific research results. To solve these problems, this paper designs and implements a user-centric extranet service support system. First, the system adopts a technical solution based on microservice architecture by building a unified user management and authentication center; then, a unified application access service center is built to provide standardized interfaces and a micro-front-end framework; then, a security management and control service center is introduced to improve system security through operations such as blacklist and whitelist management; finally, an external network business support center is designed to build a cross-departmental collaboration platform to support business integration and flexible configuration of permissions. The experimental results show that in the concurrent performance test, when the number of concurrent users increases from 50 to 250, the average response time increases from 0.8 seconds to 3.2 seconds, and the maximum response time increases from 2.5 seconds to 7.0 seconds. The throughput test results show that under the conditions of bandwidth of 1Mbps and 10Mbps, the throughput of uploading 10MB files is 0.111 MB/s and 1.053 MB/s respectively. The transmission efficiency increases significantly with the increase of bandwidth. Furthermore, the development cycle assessment shows that increasing the number of developers significantly shortens the development cycle. In the above data conclusion, the system shows good performance in terms of high concurrency, data transmission efficiency and development cycle, which verifies the effectiveness of the system's design concept and technical solution. 

Dazhong Wang, Chengyuan Li, Na Xi, Hao Zhang, Yngshuang Zhang, Xingting Tian. Design and Implementation of User-Centered Extranet Service Support System. International Journal of Big Data Intelligent Technology (2024), Vol. 5, Issue 1: 210-220. https://doi.org/10.38007/IJBDIT.2024.050122.

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