Change Details

Varnish has normalization logic for URLs, which avoids fragmenting the cache on slightly different percent encodings. While mostly standards-conform, this normalization pass also decodes slashes by default, in line with MediaWiki's policy of allowing literal slashes in titles. For anything but `/wiki/{title}`, we would like to only apply standards-compliant normalizations, without decoding slashes. Options for doing this would be: - Modify the normalization logic in VCL to (optionally) leave encoded slashes alone, and apply the conservative version to anything but `/wiki/`. - Split slash decoding from the general normalization logic, and only apply it for `/wiki/`.

Varnish has [normalization logic for URLs](https://github.com/wikimedia/operations-puppet/blob/c2d691ebaf4794300eb574c926a3a823c0d31eb4/templates/varnish/text-frontend.inc.vcl.erb#L53), which avoids fragmenting the cache on slightly different percent encodings. While mostly standards-conform, this normalization pass also decodes slashes by default, in line with MediaWiki's policy of allowing literal slashes in titles. For anything but `/wiki/{title}`, we would like to only apply standards-compliant normalizations, without decoding slashes. Options for doing this would be: - Modify the normalization logic in VCL to (optionally) leave encoded slashes alone, and apply the conservative version to anything but `/wiki/`. - Split slash decoding from the general normalization logic, and only apply it for `/wiki/`.

Varnish has normalization logic for URLs[normalization logic for URLs](https://github.com/wikimedia/operations-puppet/blob/c2d691ebaf4794300eb574c926a3a823c0d31eb4/templates/varnish/text-frontend.inc.vcl.erb#L53), which avoids fragmenting the cache on slightly different percent encodings. While mostly standards-conform, this normalization pass also decodes slashes by default, in line with MediaWiki's policy of allowing literal slashes in titles. For anything but `/wiki/{title}`, we would like to only apply standards-compliant normalizations, without decoding slashes. Options for doing this would be: - Modify the normalization logic in VCL to (optionally) leave encoded slashes alone, and apply the conservative version to anything but `/wiki/`. - Split slash decoding from the general normalization logic, and only apply it for `/wiki/`.