Esteemed monks,

I am sitting here on my laptop miles away from my code. I have an issue to deal with and maybe someone here can throw somne light on some code or at least an alogrithm.

My client application checks a SOAP server periodically for data to be downloaded, at present each client checks every two minutes or so, and with 1600 of them in the field the server sometimes gets a pretty big hit. Especially so because many of the clients rarely, if ever, have data to collect. In the TCP/IP suite, or maybe in some link layer protocols, an exponential or random backoff or retry mechanism is used to improve channel availability and fairness.

I htink I need to introduce a mechanism like this so that clients not getting data will rapidly back off and only query the server infrequently. As soon as a client sees data they should then start using a much lower numbered slot and request data more often.

I haven't found anything by way of code so far, does anyone know of an example, a module, or even a good reference where I could find an algorithm?

jdtoronto

In reply to Help with exponential backoff by jdtoronto

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.