When you query a corpus in the web interface you may notice that the result is obtained very quickly even for quite large corpora. It is possible only with asynchronous processing of the query: you see instantly (only) part of the result while the rest being computed asynchronously in the background. It is indicated by the growing number of hits on the result page. Once the query is fully processed the counting stops. But if you query a corpus via API you don’t usually want SkE to behave like this so you can disable it by putting parameter async=0 into the URL. See the documentation of view method.