Hi Betty,
From your description, your ASP page will dynamically generate some PDF
document and write out it to client user based on their submited request.
Currently, you're wondering any good means to reuse those document(without
regenerate or connect database) when the user refreshing or resubmit the
page, correct?
Based on my experience, for such caching functionality in classic ASP, we
have two obvious approachs:
1. use a temp folder to store those temporarily generated pdf files. And
after user submit a request and the PDF got generated, instead of directly
write out the pdf stream in the same request's response stream. You can use
response.redirect to redirect the user to another page(with parameters
indicate which temp pdf stream need to write out), then the user will
always get pdf stream through that particular page. And you can use a
background program to constantly monitor and clean up the temp folder based
on file's creation/modify datetime. And for client user, if they refresh
the page or resubmit same request, you can first check cached temp file, if
exists, directly flush out the cached temp pdf stream.
2. the code logic is the same as #1, however, instead of using a temp file
folder, you can use a temp database/table to store the temporarly generated
PDF stream.
How do you think?
Sincerely,
Steven Cheng
Microsoft MSDN Online Support Lead
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