对于我在 Google App Engine 开发服务器上的一些请求,Appstats 显示为负值。例如,
real=3604ms api=0ms overhead=1ms (13 RPCs, cost=-3588220, billed_ops=[DATASTORE_READ:4, DATASTORE_WRITE:-35885])
#RPCs Cost
memcache.Get 4 0
memcache.Set 3 0
datastore_v3.RunQuery 2 210 DATASTORE_READ:3
datastore_v3.Get 1 70 DATASTORE_READ:1
datastore_v3.Put 1 -3588500 DATASTORE_WRITE:-35885
memcache.Delete 1 0
search.DeleteDocument 1 0
负成本是否与正成本相同,但对于删除操作?