I just found the following : https://books.google.co.uk/books?id=ZO09CgAAQBAJ&pg=PA96&lpg=PA96&dq=$binary_
To conserve the space occupied by the key we use $binary_remote_addr It evaluates into a binary value of the remote IP address So it seems I should be doing this instead to keep the key in memory for that IP small to reduce the memory footprint. limit_req_zone $binary_http_cf_connecting_ip zone=one:10m rate=30r/m; limit_conn_zone $binary_http_cf_connecting_ip zone=addr:10m; Posted at Nginx Forum: https://forum.nginx.org/read.php?2,269502,269513#msg-269513 _______________________________________________ nginx mailing list nginx@nginx.org http://mailman.nginx.org/mailman/listinfo/nginx