Based on the design and implementation of BERSE,the paper discusses some key technologies for parallel IR systems,such as data distributing,query disassembling,and node sparing.

• 结合基础教育资源搜索引擎的设计开发，讨论分布式并行信息检索系统中涉及的数据分布、查询任务分解及节点冗余等关键技术。