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RewriteRule ^Product/page/?$ /product/page/$1/1 [R=301,L]
The best solution here is to show both the upper case (or mixed case) and lower case version of the page. No redirect should be required at all.
That causes canonicalization problems in the search engines as those are two distinctly different paths showing the same content.
Apache gets this right. IIS server software and badly coded CMS software gets it wrong.
The Uniform resource locator should not be case sensitive as outlined by Tim Berners Lee.
A full BNF description of the URL syntax is given in Section 5.
In general, URLs are written as follows:
A URL contains the name of the scheme being used (<scheme>) followed
by a colon and then a string (the <scheme-specific-part>) whose
interpretation depends on the scheme.
Scheme names consist of a sequence of characters. The lower case
letters "a"--"z", digits, and the characters plus ("+"), period
("."), and hyphen ("-") are allowed.For resiliency, programs
interpreting URLs should treat upper case letters as equivalent to
lower case in scheme names (e.g., allow "HTTP" as well as "http").
I always use lc urls
When is a URI "the same URI"?
Two URIs are the same if (and only if) they are the same character for character.
Two URIs which are different may in fact be equivalent, in that they may refer to the same thing, and give the same result in all operations. In some cases any agent looking at two URIs can deduce, from knowledge of the various web standards, that they must be equivalent, in that they must refer to the same thing. For example, HTTP URIs contain domain names, and the Domain Name System is case-insensitive. Therefore, while it is normal practice to use lower case for domain names, any agent which comes across two URIs which differ only in the case of the domain name can conclude that they must refer to the same thing. In another case, a client agent may use out-of-band information about a web site to know that its URI paths are case-invariant, or that URIs ending in "/" and "/index.html" are equivalent. It is bad engineering practice to make new protocols require such processing.
There are a long series of such algorithms. Which ones an agent can apply depends on what information it has to hand, and depend on what knowledge of which protocols has been programmed into it. New schemes may be defined in the future, for which different forms of canonicalization can be done. There is, therefore, no definitive canonicalization algorithm for URIs. Generic URI handling code should handle URIs as case-sensitive character strings.