fix a bug in setCache.
fix a bug in setCache.

while list save to cache has only one element, can't not save to cache. Why?

should be >=, rather than > .

Signed-off-by: Daogang Tang <6435653d2db08e7863743a16df53ecbb301fb4b0@gmail.com>

daogangtang/bamboo,daogangtang/bamboo