Here are some serious reasons why we need multiple machines running the same OS.

  1. Millions of page hits a day will tax a PC somewhat. While we could optimize, programmers cost more than computers.
  2. Load balancers and failover are a business requirement. By definition, you can't failover from a machine to itself.
  3. When we update the code on the live site, it is nice to be able to take half the machines out of service, update them, then cut over and update the rest.
  4. The production site is at a nice hosting facility. Developers work at a different site. Latency sucks.
  5. When installing experimental software, modules, etc, it is nice to do that in a physically isolated environment. Ditto when testing out things like OS upgrades.
And those are just the reasons why we have multiple Linux machines. There are plenty more that I can think of, but they don't happen to apply to us.

In reply to Re: multi-PC tasking by tilly
in thread multi-PC tasking by samizdat

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.