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Thread: What are usable codes to do URL forwarding according to Level 3 domain names?

  1. #1
    Join Date
    Jul 2013
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    Question What are usable codes to do URL forwarding according to Level 3 domain names?

    I need to pre-define almost unlimited number of keywords for Level 3 and Level 2 subdomains, in order to forward those pre-defined user-friendly, recognizable domain names to my primary site.

    I need to preset: type-in keyword subdomains = parts of the forwarded URLs
    For example:
    subdomain name “toy” = “noun-1” part of the forwarded URLs  
    subdomain name ”food”= “noun-2” part of the forwarded URLs  
    number of pre defined noun should be unlimited  
    any undefined noun = “noun-0”
    subdomain name “my” = “whose-1” part of the forwarded URLs
    subdomain name “your” = “whose-2”part of the forwarded URLs
    subdomain name “his” = “whose-3”part of the forwarded URLs
    number of pre defined possessive pronoun should be unlimited
    any undefined possessive pronoun = “whose-0”

    So that domain names such as“http://toy.website.com” and “http://food.website.com” could be forwarded to some predefined URLs.
    http://toy.website.com” could be forwarded to http://www.myplace.com/noun-1-whose-0 (“noun-1”first, then ”whose-0”)
    http://food.website.com could be forwarded to http://www.myplace.com/noun-2-whose-0
    If we type in“http://my.toy.website.com” , it could be forwarded to http://www.myplace.com/noun-1-whose-1

    and http://your.food.website.com needs to redirect to http://www.myplace.com/noun-2-whose-2

    http://my.website.com” to http://www.myplace.com/noun-0-whose-1

    http://your.website.com to http://www.myplace.com/noun-0-whose-2 (“noun-0”should be in place)

    If we type in some undefined words, for example, http://undefined_whose.toy.website.com should be forwarded to http://toy.website.com [just drop undefined words], then forward again to http://www.myplace.com/noun-1-whose-0 accordingly.
    http://my.undefined_noun.website.com first to http://my.website.com then to http://www.myplace.com/noun-0-whose-1

    If we only type-in level 2 subdomains without level 3 subdomains, such as http://undefined_words.website.com , or type in more than level 4 subdomains, or “both undefined level 3 and undefined level 2” ,such as http://undefined_whose.undefined_noun.website.comthey should be redirected uniformly to http://www.myplace.com/domain_rule.html

    Would Apache Mod_Rewrite help???

    Anyone could offer a lending hand and post all codes that I am able to use directly?

    *** If I set records on a DNS provider, it's fine if the keywords are limited in numbers. But when we consider scaling-up keywords, manually set "Johns.toy", "Marys.toy", "Janes.toy"...and "Janes.food", "Janes.bag", "Janes.book"...."Leos.light"...would be unrealistic.

  2. #2
    Join Date
    Jul 2013
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    It is not recommended to do this in mod_rewrite. Processing lots of rewrite rules on each request will have significant impact on server performance. You should pass the whole request to a script and process it with a script, this would be not only more resource effective but also much easier because you can use regular expressions, loops, conditions and even the database.

  3. #3
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    Mod rewrite or doing it via a script will both have an overhead.
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