st common historical log format is the <a href="http://httpd.apache.org/docs/1.3/logs.html#combined">Combined Log Format</a>; this is used as one of the default formats for <a href="http://nginx.org/">nginx</a> and the <a href="https://www.varnish-cache.org/docs/trunk/reference/varnishncsa.html">Varnish caching system</a>. <code>webtools</code> lets you read it in trivially with <code>read_combined</code>:</p>
<pre class="sourceCode r"><code class="sourceCode r"><span class="kw">library</span>(webreadr)
<sp