<html><head><meta http-equiv="content-type" content="text/html; charset=utf-8"></head><body dir="auto"><div>On 26 Mar 2014, at 14:02, Nicholas Martin <<a href="mailto:nic_i_like_to_@hotmail.com">nic_i_like_to_@hotmail.com</a>> wrote:<br><br></div><blockquote type="cite"><div><div dir="ltr"><div>However, the challenge is finding what things will give us the best results. For example, in the work we have done so far, code changes to aggregate data have helped a lot, caching less so.</div></div></div></blockquote><div><br></div>As others have already said, you need to measure things before you act.<div><br></div><div>The best tool I've come across for measuring performance of Rails apps is Rack MiniProfiler.</div><div><br></div><div><a href="https://github.com/miniprofiler/rack-mini-profiler">https://github.com/miniprofiler/rack-mini-profiler</a></div><div><br></div><div>I recommend watching the RailsCast to get yourself up to speed.</div><div><br></div><div>It's so quick and easy to install and use that I run it permanently in development, which helps me avoid big performance related oversights when building new features.<br><div><br></div><div>You'll obviously get different performance characteristics in production, with production hardware and the real users' data. Unlike most profiling tools, Rack MiniProfiler has been designed to run in production too.</div><div><br><blockquote type="cite"><div><div dir="ltr"><div>Any advice, based on experience would be most appreciated. Any form would be of interest, from a short reply, to a chat over a coffee or even potentially a day or so of consultancy.</div></div></div></blockquote><div><br></div>I'd be happy to take a look at it on a consultancy basis if you like – ping me an email if you're interested. I wouldn't be surprised if a couple of hours with the profiler highlighted your low hanging fruit though...</div><div><br></div><div>Cheers,</div><div>Graham<style><!--
.hmmessage P
{
margin:0px;
padding:0px
}
body.hmmessage
{
font-size: 12pt;
font-family:Calibri
}
--></style></div></div></body></html>