fixes for auto backoff
fixes for auto backoff

MikeLx/open-source-search-engine,gigablast/open-source-search-engine,gigablast/open-source-search-engine,MikeLx/open-source-search-engine,gigablast/open-source-search-engine,MikeLx/open-source-search-engine,MikeLx/open-source-search-engine,gigablast/open-source-search-engine,MikeLx/open-source-search-engine,gigablast/open-source-search-engine,gigablast/open-source-search-engine,MikeLx/open-source-search-engine,gigablast/open-source-search-engine