Hi. The obj.prefecth variable, What is it supposed to do? The default VCL set this variable to -30s, and varnishlog shows (30 seconds before that object expires): 0 ExpPick - 964711497 prefetch 0 VCL_call - prefetch 0 VCL_return - fetch 0 Debug - "Attempt Prefetch 964711497" Can someone please, explain what does it mean. Thanks in advance. BR.