File: //proc/self/root/proc/self/root/usr/share/doc/varnish-6.0.3/html/phk/farfaraway.html
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="X-UA-Compatible" content="IE=Edge" />
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>Far, far away — Varnish version 6.0.3 documentation</title>
<link rel="stylesheet" href="../_static/classic.css" type="text/css" />
<link rel="stylesheet" href="../_static/pygments.css" type="text/css" />
<script type="text/javascript" id="documentation_options" data-url_root="../" src="../_static/documentation_options.js"></script>
<script type="text/javascript" src="../_static/jquery.js"></script>
<script type="text/javascript" src="../_static/underscore.js"></script>
<script type="text/javascript" src="../_static/doctools.js"></script>
<link rel="index" title="Index" href="../genindex.html" />
<link rel="search" title="Search" href="../search.html" />
<link rel="next" title="Going fast slowly" href="thatslow.html" />
<link rel="prev" title="Trial&Error - Prototyping - Continous Integration" href="trialerror.html" />
</head><body>
<div class="related" role="navigation" aria-label="related navigation">
<h3>Navigation</h3>
<ul>
<li class="right" style="margin-right: 10px">
<a href="../genindex.html" title="General Index"
accesskey="I">index</a></li>
<li class="right" >
<a href="thatslow.html" title="Going fast slowly"
accesskey="N">next</a> |</li>
<li class="right" >
<a href="trialerror.html" title="Trial&Error - Prototyping - Continous Integration"
accesskey="P">previous</a> |</li>
<li class="nav-item nav-item-0"><a href="../index.html">Varnish version 6.0.3 documentation</a> »</li>
<li class="nav-item nav-item-1"><a href="index.html" accesskey="U">Poul-Hennings random outbursts</a> »</li>
</ul>
</div>
<div class="document">
<div class="documentwrapper">
<div class="bodywrapper">
<div class="body" role="main">
<div class="section" id="far-far-away">
<span id="phk-farfaraway"></span><h1>Far, far away<a class="headerlink" href="#far-far-away" title="Permalink to this headline">¶</a></h1>
<p>I realize I’m showing my age when I admit that Slades 1974 hit <a class="reference external" href="https://www.youtube.com/watch?v=6gqCCAb8xbw">“Far
Far Away”</a> was one
of the first rock-ballads I truly loved. (In case you have never
heard of Slade or the 1970’ies British glam-rock, you may want to
protect your innocence and <em>not</em> click on that link.)</p>
<p>Some years back I got invited to a conference in New Zealand, and
that is “far far away” from Denmark. So far away in fact, that I
downloaded the entire
<a class="reference external" href="https://archive.org/details/bstj-archives">Bell Systems Technical Journal</a>
to my Kobo eReader in order to have something to do during the 24
hour air-traffic “experience”.</p>
<p>BSTJ is good reading, for instance you learn that they invented
<a class="reference external" href="https://archive.org/stream/bstj62-7-2365#page/n21/mode/2up">Agile Programming</a>
back in 1983, but failed to come up with a hip name.</p>
<p>Anyway, Internet Access in New Zealand is like time-travel back to
around Y2K or so, and when one of my time-nuts friends launched a
<a class="reference external" href="https://www.kickstarter.com/projects/1575992013/kiwisdr-beaglebone-software-defined-radio-sdr-with">Kickstarter project</a> it didn’t take much before his residential connection folded.</p>
<p>As it happens, I am in the process of setting up the new Varnish-Cache.org
project server just now, generously sponsored/donated by <a class="reference external" href="https://www.RootBSD.com">RootBSD.com</a>, so it was natural for me to offer to
help him out.</p>
<p>I don’t need to explain varnishhist to this audience:</p>
<div class="highlight-default notranslate"><div class="highlight"><pre><span></span> <span class="o">|</span>
<span class="o">|</span>
<span class="o">||</span>
<span class="o">||</span>
<span class="o">||</span>
<span class="o">||</span>
<span class="o">||</span>
<span class="o">||</span>
<span class="o">||</span>
<span class="o">||</span>
<span class="o">||</span>
<span class="o">||</span>
<span class="o">||</span> <span class="c1">##</span>
<span class="o">|||</span> <span class="c1">##</span>
<span class="o">|||</span> <span class="c1"># ## #</span>
<span class="o">|||||</span> <span class="c1"># #####</span>
<span class="o">+-------+-------+-------+-------+-------+-------+-------+-------+-------</span>
<span class="o">|</span><span class="mf">1e-6</span> <span class="o">|</span><span class="mf">1e-5</span> <span class="o">|</span><span class="mf">1e-4</span> <span class="o">|</span><span class="mf">1e-3</span> <span class="o">|</span><span class="mf">1e-2</span> <span class="o">|</span><span class="mf">1e-1</span> <span class="o">|</span><span class="mf">1e0</span> <span class="o">|</span><span class="mf">1e1</span> <span class="o">|</span><span class="mf">1e2</span>
</pre></div>
</div>
<p>Most of us who live in civilized places, tend to forget that the InterNet
is very unevenly distributed.</p>
<p>My ISP enabled IPv6 on the VDSL2+ line to my beach-house today,
some people have fiber, but in terms head-count, the majority of
the world has really horrible internet connections.</p>
<p>In some cases it is the last mile, for instance if you live out at some
remote fjord in Norway.</p>
<p>In other cases it is a mid-net bottle-neck, in the case of New
Zealand a shortage of transoceanic fiber cables <a class="footnote-reference" href="#f1" id="id2">[1]</a> .</p>
<p>Caching is not a cure-all, it is far from a miracle cure, even thought it
might seem that way sometimes.</p>
<p>But as prophylactic for bandwidth troubles, it is second to none.</p>
<p>One of the goals of Varnish was that it should be easy to roll out
in a crisis situation, start it, repoint your DNS, suffer less,
tune it a little bit (usually: ignore cookies) and suffer a lot less.</p>
<p>Today was a good sanity-check for me, trying exactly that.</p>
<p>All in all it worked out pretty well, as the varnishhist above shows.</p>
<p><em>phk</em></p>
<table class="docutils footnote" frame="void" id="f1" rules="none">
<colgroup><col class="label" /><col /></colgroup>
<tbody valign="top">
<tr><td class="label"><a class="fn-backref" href="#id2">[1]</a></td><td>These <a class="reference external" href="https://archive.org/details/bstj-archives?&and[]=bstj%20%201957-1-1">BSTJ articles about the first Atlantic phone cable</a>
will give you an appreciation of why that is not a trivial problem
to solve.</td></tr>
</tbody>
</table>
</div>
</div>
</div>
</div>
<div class="sphinxsidebar" role="navigation" aria-label="main navigation">
<div class="sphinxsidebarwrapper">
<h4>Previous topic</h4>
<p class="topless"><a href="trialerror.html"
title="previous chapter">Trial&Error - Prototyping - Continous Integration</a></p>
<h4>Next topic</h4>
<p class="topless"><a href="thatslow.html"
title="next chapter">Going fast slowly</a></p>
<div role="note" aria-label="source link">
<h3>This Page</h3>
<ul class="this-page-menu">
<li><a href="../_sources/phk/farfaraway.rst.txt"
rel="nofollow">Show Source</a></li>
</ul>
</div>
<div id="searchbox" style="display: none" role="search">
<h3>Quick search</h3>
<div class="searchformwrapper">
<form class="search" action="../search.html" method="get">
<input type="text" name="q" />
<input type="submit" value="Go" />
<input type="hidden" name="check_keywords" value="yes" />
<input type="hidden" name="area" value="default" />
</form>
</div>
</div>
<script type="text/javascript">$('#searchbox').show(0);</script>
</div>
</div>
<div class="clearer"></div>
</div>
<div class="related" role="navigation" aria-label="related navigation">
<h3>Navigation</h3>
<ul>
<li class="right" style="margin-right: 10px">
<a href="../genindex.html" title="General Index"
>index</a></li>
<li class="right" >
<a href="thatslow.html" title="Going fast slowly"
>next</a> |</li>
<li class="right" >
<a href="trialerror.html" title="Trial&Error - Prototyping - Continous Integration"
>previous</a> |</li>
<li class="nav-item nav-item-0"><a href="../index.html">Varnish version 6.0.3 documentation</a> »</li>
<li class="nav-item nav-item-1"><a href="index.html" >Poul-Hennings random outbursts</a> »</li>
</ul>
</div>
<div class="footer" role="contentinfo">
© Copyright 2010-2014, Varnish Software AS.
Created using <a href="http://sphinx-doc.org/">Sphinx</a> 1.7.6.
</div>
</body>
</html>