Back to Front Performance - Oct 2013

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Back to Front Performance. Breaking Borders 15 Oct 2013 @drewm

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Back to Front Performance. Breaking Borders 15 Oct 2013 @drewm

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Performance is a feature.

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The Steve Souders Problem.

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256MB 10MB <25

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Performance under load depends on the time taken to process each request.

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The Back End.

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Hosting.

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Cheap hosting is expensive.

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Shared hosting is the worst.

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Consider what your project cost to build when buying hosting.

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Use the best hosting you can afford, not the cheapest you can get away with.

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Hot Girls Love Hosting!

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SELECT c.catTitle, COUNT(c2p.catID) as qty FROM tblBlogCategories c, tblBlogPost_Categories c2p WHERE c.catID=c2p.catID GROUP BY c.catID ORDER BY qty DESC

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Be smart.

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How real-time is this data?

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Do the work once.

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Premature optimization is the root of all evil.

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There is no doubt that the grail of efficiency leads to abuse. Programmers waste enormous amounts of time thinking about, or worrying about, the speed of noncritical parts of their programs, and these attempts at efficiency actually have a strong negative impact when debugging and maintenance are considered. We should forget about small efficiencies, say about 97% of the time: premature optimization is the root of all evil.

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Yet we should not pass up our opportunities in that critical 3%. A good programmer will not be lulled into complacency by such reasoning, he will be wise to look carefully at the critical code; but only after that code has been identified.

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The fear of premature optimization is the root of all evil.

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Let’s make programming fun!

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Insanity is doing the same thing over and over again and expecting different results.

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The Network.

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www.varnish-cache.org

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Divide resources across domain names.

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s1.example.com s1.example.com s2.example.com s2.example.com s3.example.com s3.example.com s4.example.com s4.example.com

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example.com s*.example.com Apache nginx application static assets

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ExpiresActive on ExpiresByType image/jpg "access plus 7 days" ExpiresByType image/gif "access plus 7 days" ExpiresByType image/jpeg "access plus 7 days" ExpiresByType image/png "access plus 7 days" ExpiresByType text/css "access plus 7 days" ExpiresByType application/javascript "access plus 7 days" ExpiresDefault "access plus 10 years"

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AddOutputFilterByType DEFLATE text/html text/plain text/xml text/css text/javascript application/javascript www.whatsmyip.org/http-compression-test/

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mod_pagespeed

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The Front End.

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github/ded/script.js/ stevesouders.com/controljs/ developers.google.com/loader/

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* * decknetwork.net 24ways.org/201106

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Steve Souders + Books stevesouders.com Yahoo! Exceptional Performance developer.yahoo.com/performance/