#failability How to not Fail on Launch http://adammalone.net Adam - - PowerPoint PPT Presentation

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#failability How to not Fail on Launch http://adammalone.net Adam - - PowerPoint PPT Presentation

Dec 20, 2022 323 likes •577 views

#failability How to not Fail on Launch http://adammalone.net Adam Malone @adammalone drupal.org/user/1295980 aka typhonius Adam Malone | How to not Fail on Launch about:me Client Advisory - Acquia APJ Created my first HTML site: 2009

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#failability

How to not Fail on Launch

http://adammalone.net @adammalone drupal.org/user/1295980

Adam Malone

aka typhonius Adam Malone | How to not Fail on Launch

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about:me

  • Client Advisory - Acquia APJ
  • Created my first HTML site: 2009
  • SSH’d into my first server: 2010
  • Found out about Drupal: May 2011
  • First core commit: Aug 2012 (Issue #304540)
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about:acquia

  • Drupal as a Service
  • Infrastructure, Support, Workflow
  • Hosted on scalable managed AWS instances
  • Centuries of combined knowledge
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about:launches

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How to fail on Launch

  • The ‘Double Jeopardy’
  • The ‘Bulletproof Glass’
  • The ‘Franken-Server’
  • The ‘Naked Gun’
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healthcare.gov Problems

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healthcare.gov Solutions

  • More authenticated caching
  • Staggered/phased roll-out
  • Asynchronous signups/tasks
  • Client-side processing
  • Reduce Single Points of Failure
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How to not Fail on Launch

  • Size accurately
  • Load test thoroughly
  • Audit custom modules
  • Use good caching strategies
  • DNS
  • Scotch
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How to not Fail on Launch

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How to fail on Launch ...cont

  • The ‘Sleeping Beauty’
  • The ‘LOST’
  • The ‘General Custer’
  • The ‘100 Years War’
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Load Testing

  • Use historical logs
  • Break your site
  • Tell your host
  • Remove the need for changes near/during launch
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Sizing

  • Page views per month
  • % Authenticated
  • Docroots
  • Memory limit
  • PHP (FPM/CGI)
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DNS

  • Tell your host
  • Drop the TTL before launch
  • Use correct records
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Caching

  • External: Varnish/CDN
  • Internal: Memcache/Redis
  • Drupal Core
  • Contrib
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How to fail on Launch ...cont ...cont

  • The ‘Marty McFly’
  • The ‘Sell by date’
  • The ‘Spider bite’
  • The ‘One Ring to rule them all’
  • The ‘MacGuyver’
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Module Anti-patterns

  • variable_set every page load
  • Setting sessions for anonymous
  • *_ui / dblog / statistics
  • Unnecessary functions - *_load
  • External calls
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Scotch

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How to not Fail after Launch

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Questions?

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Resources

  • Caching

○ Varnish ○ Memcache ○ Redis ○ DynamoDB ○ Entity Cache ○ Views Cache Bully ○ Cache Audit ○ Variables that suck less

  • Static-ify

○ httrack ○ boost

  • Scaling

○ Stack Demo

  • Load Testing

○ Blazemeter ○ jmeter ○ SOASTA ○ ab

  • Profiling

○ XDebug ○ XHProf

  • Launch

Checklist

  • Scotch

○ Any good bottle shop