URLs in general are case-sensitive (with the exception of machine names). There may be URLs, or parts of URLs, where case doesn’t matter, but identifying these may not be easy. Users should always consider that URLs are case-sensitive.
@Martin try typing HTML and URLs into your browser (see how I have changed the case of much of the path. When I do it I do NOT get a 404 because my case is wrong. Regardless of what the W3 says case has little or no effect on my ability to path to a web resource.
How do I get Tyk to match all permutations of the case of a path. Does Tyk path specs support regular expressions or something?