The study analyzed the current popular unstructured super-peer
topology and the search technique. In order to avoid the high expense of topology
construction, the huge cost of topology repair and the low efficiency of search,
a kind of novel construction method of orderly layered super-peer topology guided
by the safety peer (OLST) is presented and the search function is realized in
this study. After the leaf peers being transferred and layered, the new coming
peer will be joined by an assigned safety super-peer. An idea of among friends
with similar interests is used to improve the search efficiency of the topology.
The experimental results indicate that the method can effectively balance the
super-peer load and significantly decrease the construction and repair cost
of the topology. Furthermore, the search efficiency is also increased.