MySQL and Postgres both have "replication" facilities, which probably do what you want to do, only they've been written and tested already, and are supported in a commercial capacity should you require it.

Further, if you're using BerkleyDB, you could very easily switch to an RDBMS by tying your data to SQL instead of a flat file. Your program will hardly notice the difference. There are several examples of this sort of thing floating around, one of which is in the MySQL and mSQL book from O'Reilly. You won't be able to use any of the fancy SQL features without rewriting parts, of course, but at least this is optional.

In reply to Re^3: Distributed DBM data storage by tadman
in thread Distributed DBM data storage by agoth

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.