Hello fellow monks -- I seek all wisdom and advise!

I am serving a website in (2) languages, and wish to do so without requiring the visitor to make the selection. I have shifted the heavy lifting to mod_perl because visitors who have no language support for either of my translations get a nasty 406 error. Limitation of multiviews (as implemented in Apache 1.x).

So... Easy enough with mod_perl <grin>

My request for advise is this:

Which operation would be more costly, checking the contents of $r->header_in('Accept-Language') with a regexp (de and en for example) or just tacking on the default language (with a low quality rating) for all request and forget about it! The website has a considerable amount of traffic and of course I want to keep all access 'snappy'.

Obligatory code example:

...
# Everyone gets English language support added
my $lang = $r->header_in('Accept-Language');
$r->header_in('Accept-Language', $lang . ', en;q=0.20');
return OK;

[download]
Or...

...
# English language added as failsafe
my $lang = $r->header_in('Accept-Language');
if ($lang !~ /en/ || $lang !~ /de/) {
  $r->header_in('Accept-Language', $lang . ', en;q=0.20');
  return OK;
} else {
  return OK;
}

[download]

In reply to Language Negotiation with mod_perl, Apache by penguinfuz

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