log record
7.This paper discusses the work mode of book r es ervation in library under network environment from aspects of distribution of re servation places,record and checkout of data,account and statistic,pick-up of old books,move and log-on and handover of books to adapt the request of network environment to reservation work of library.
9.In order to dig the most queried domain names in a period of time for DNS name server,this paper introduces a cache record swapping statistical algorithm to count the queries in cache almost accurately,because many name servers,which have so many users and run heavily,always close the query log switch.

