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Top 10 Scalability Mistakes

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John Coggeshall
John Coggeshall

My Top 10 Scalability Mistakes talk updated for O'Reilly's Open Source Convention in Portland, OR 2008

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Top 10 Scalability Mistakes ,[object Object]
Welcome! ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
What is Scalability? ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Oct. 18, 2005 # The secret to scalability is the ability to design, code, and maintain your applications using the same process again and again regardless of size
[object Object],[object Object]
You have to plan ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Designing without Scalability ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Performance Metrics ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Proactive vs. Reactive ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Everyone has a role in Performance ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Designing with Scalability ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Network file systems ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Network file systems ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
I/O Buffers ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Ram Disks ,[object Object],[object Object],[object Object]
Bandwidth Optimization ,[object Object],[object Object],[object Object],[object Object],[object Object],<?php $o = array(&quot;clean&quot; => true, &quot;drop-proprietary-attributes&quot; => true, &quot;drop-font-tags&quot; => true, &quot;drop-empty-paras&quot; => true, &quot;hide-comments&quot; => true, &quot;join-classes&quot; => true, &quot;join-styles&quot; => true); $tidy = tidy_parse_file(&quot;php.html&quot;, $o); tidy_clean_repair($tidy); echo $tidy; ?>
Configuring PHP for Speed ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Blocking calls ,[object Object],[object Object],[object Object],[object Object],[object Object]
Blocking calls ,[object Object],[object Object],[object Object],[object Object]
Failing to Cache ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Failing to Cache ,[object Object],[object Object]
Semi-Static Caching ,[object Object],[object Object],[object Object],[object Object]
Semi-Static Caching ,[object Object],[object Object],[object Object]
Semi-Static Caching ,[object Object],[object Object],[object Object]
Semi-Static Caching ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Semi-Static Caching ,[object Object],[object Object],[object Object],#
Poor database design ,[object Object],[object Object],[object Object],[object Object],[object Object]
Poor database design ,[object Object],[object Object],[object Object],[object Object],[object Object]
Improperly dealing with database connections ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Let me say that again.. ,[object Object]
Database connections ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Having your Cake and Eating it too ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
 
SQLite, Huh? ,[object Object],[object Object],[object Object],[object Object],[object Object]
Keepalive Requests ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Knowing where to Not optimize ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
[object Object],[object Object],[object Object],[object Object],Knowing where to Not optimize
[object Object],[object Object],[object Object],Knowing where to Not optimize
Use Profilers ,[object Object],[object Object],[object Object],[object Object]
How a Profiler/Debugger works in PHP ,[object Object]
Tips on using a profiler ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Something More.. ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Something More.. ,[object Object],[object Object],[object Object],[object Object]
Final Thoughts Oct. 18, 2005 # ,[object Object],[object Object],[object Object],[object Object],[object Object],Questions?

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