This paper gives an integrated strategy to access distributed spatial data sets based on the dual-cache mechanism,and presents the corresponding data structure.

Query optimization technology is analyzed and at the same time an idea is presented that cache mechanism is introduced in ROLAP designing and applying,enhancing ROLAP query performance much more.

Effective cache mechanism can avoid round trip time to database, avoid calculations which occupying much time, save server resource, as well as improving the response time and waiting time.

The cache mechanism based on XML improves the response efficiency,implements the optimization of query.

Application of Map Cache Mechanism Based on the Distributed WebGIS;

Design and Implementation of Key Modules and Caching Mechanism for VAP;

Methods From three respects: topology construction,scheduling mechanism and caching mechanism,the key techniques of P2P streaming media systems are summarized,including peer selection algorithm,peer location algorithm,data scheduling algorithm,cache replacement algorithm,relaying and pre-fetching algorithm.

The system manages user access infor-mation centrally for multiple business systems and realizes the function of Single Sign-on and takes advantage of caching mechanism to reduce interaction with the database to significantly improve the performance of the system.

An embedded audio solution based on AC-link protocol that supports multi-channel(Direct Memory Access,DMA) transfer and dual-buffer mechanism is presented in this article.

because traditional logistics decision support system(LDSS) is hard to meet with the vast logistics data,logistics decision support system for multimodal transportation based on distributed cache mechanism and data warehouse is proposed,the process flow and effective cache replacing algorithm are designed.