I noticed that our front end proxy varnish returns sometimes truncated HTML pages $ for i in $(seq 1 5);do curl -sSf https://docs-archive.freebsd.org/doc/13.0-RELEASE/usr/local/share/doc/freebsd/en/books/handbook/book.html?x=4 | wc;done 7226 71923 851968 18545 175529 1998848 32807 309138 3614799 32807 309138 3614799 32807 309138 3614799 without caching, it get worse: $ for i in $(seq 1 5);do curl -sSf -H "Cache-Control: no-cache" https://docs-archive.freebsd.org/doc/13.0-RELEASE/usr/local/share/doc/freebsd/en/books/handbook/book.html | wc;done 8341 82813 983040 21867 206733 2359296 16469 159056 1835008 32807 309138 3614799 12411 118977 1376256