One solution, assuming you are already caching connections (i.e. mod_perl or some such), is to use the temporary, in-memory tables in SQL::Statement (available to any of the DBDs which subcalss it - AnyData, CSV, File, DBM, etc.). Basically you can then query the cache with the same SQL you use to query the full db and you can switch back and forth between them. Pair Networks, our kind host, uses this kind of caching for some of their databases and Dan Wright, their lead software developer will be talking about that and AnyData at the upcoming YAPC in Toronto. As for updating, the in-memory tables are updateable, so you can go in either direction (refresh the cahce from the db or refresh the db from the cache).

In reply to Re: Best way to do caching of Class::DBI objects from a MySQL database by jZed
in thread Best way to do caching of Class::DBI objects from a MySQL database by eXile

Title:
Use:  <p> text here (a paragraph) </p>
and:  <code> code here </code>
to format your post, it's "PerlMonks-approved HTML":


  • Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!
  • Titles consisting of a single word are discouraged, and in most cases are disallowed outright.
  • Read Where should I post X? if you're not absolutely sure you're posting in the right place.
  • Please read these before you post! —
  • Posts may use any of the Perl Monks Approved HTML tags:
    a, abbr, b, big, blockquote, br, caption, center, col, colgroup, dd, del, details, div, dl, dt, em, font, h1, h2, h3, h4, h5, h6, hr, i, ins, li, ol, p, pre, readmore, small, span, spoiler, strike, strong, sub, summary, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr
  • You may need to use entities for some characters, as follows. (Exception: Within code tags, you can put the characters literally.)
            For:     Use:
    & &amp;
    < &lt;
    > &gt;
    [ &#91;
    ] &#93;
  • Link using PerlMonks shortcuts! What shortcuts can I use for linking?
  • See Writeup Formatting Tips and other pages linked from there for more info.