Developing-With-Production-Data/index.html at master · clifff/Developing-With-Production-Data · GitHub

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<!DOCTYPE html>
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<head>
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  <title>Data Snapshots</title>

  <meta name="description" content="TODO: THIS">
  <meta name="author" content="Clif Reeder">
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<body class="deck-container">
  <article>
  <section class="slide">
    <h1>Developing With Production Data</h1>
  </section>

  <section class="slide">
    <h2>Problems</h2>
    <ul>
      <li>What does a developer see when they first start the app?</li>
      <li>What kind of data is a designer using for example?</li>
      <li>What data does a QA tester use?</li>
    </ul>
  </section>

  <section class="slide">
    <h1>Who are you, anyway?</h1>
  </section>

  <section class="slide">
    <h2>Vox Media</h2>
      <ul>
        <li>The Verge</li>
        <li>SBNation.com</li>
        <li>320+ sports blogs</li>
        <li>21 Regional Sites</li>
        <li>One big CMS, with lots of user generated content w/ different styles</li>
      </ul>
    </p>
  </section>

  <section class="slide">
    <h2>Solutions</h2>
    <pre>
<code>5.times.each do |j|
  Story.create!(
    :user => users[:author],
    :community => community,
    :title => title(j),
    :body => lorem_ipsum()
  )
end</code></pre>
  </section>

  <section class="slide">
  <h2>What if we could use REAL data?</h2>
  </section>


  <section class="slide">
    <h2> This is my dev environment</h2>
    <img src="https://img.skitch.com/20120326-n6iw38u5e4498had9nn2sjiqf1.jpg" alt='example' style='height:400px'/>
  </section>

  <section class="slide">
    <h2>Complications</h2>
    <p><em>Size</em> - Production database is > 100 GB, so that's not really an option. How do we get a subset?</p><br/>
    <p><em>Assets</em> - How do we share external assets and make that work? (S3, etc)</p><br/>
    <p><em>Services</em> - How do we make internal, external services play nice? (Staircar)</p>
  </section>

  <section class="slide">
    <h2>Alternative talk titles</h2>
    <ul>
      <li>Creating a representative subset of production data</li>
      <li>Imperfect, hacky SQL that greatly improves developers lives</li>
    </ul>
  </section>

  <section class="slide">
    <h2>Results</h2>
    <ul>
      <li>Production DB is 118 GB</li>
      <li>Development DB is 4.7 GB </li>
      <li>Gzipped SQL is 650 MB</li>
    </ul>
  </section>


  <!--
  <section class="slide">
    <h2>How is it used? Rake.</h2>
    <p>
      AWKWARD
      <ul>
        <li>Rake task to create</li>
        <li>Rake task to download/import</li>
     </ul>
    </p>
  </section>
  -->

  <section class="slide">
    <h2>Prerequisites</h2>
    <p>
      <ul>
        <li>You actually have this problem</li>
        <li>Slave DB is a must</li>
        <li>Figure out what you're largest tables are, and approximate what a meaningul subset would be.</p>
      </ul>
    </p>
  </section>

  <section class="slide">
    <h2>General Process</h2>
    <p>
      <ul>
        <li>Connect AR to DB slave</li>
        <li>For every table, mysqldump to file. A subset, if its a big table</li>
        <li>Import that dump into a temporary DB</li>
          <ul>
            <li>Why? Because we need to anonymize/delete things.</li>
          </ul>
        <li>For every big model</li>
        <ul>
          <li>For every table</li>
          <ul>
            <li>If foreign keys to big table, DELETE things that are missing</li>
          </ul>
          <li>end</li>
        </ul>
        <li>end</li>
      </ul>
    </p>
  </section>

  <section class="slide">
    <h2>It's a Trap!</h2>
    <ul>
      <li>Need a list of all models. Can be tricky w/ namespaces and inheritence</li>
      <li>def self.has_belongs_relationship_to?(model)</li>
      <ul>
        <li>self.reflect_on_all_associations.select{ |x| x.macro == :belongs_to }</li>
        <li>Detect polymorphism</li>
      </ul>
      <li>Always raw SQL if possible - but don't let AR go to sleep</li>
    </ul>
  </section>

  <section class="slide">
    <h2> Process conintuned...</h2>
    <ul>
      <li>Anonymize user data</li>
      <li>Change all passwords to known crypted/salt</li>
      <li>Wipe all stored ip adresses</li>
      <li>Wipe all stored analytics related data</li>
      <li>Anonymize all emails, etc, etc</li>
      <li>Dump that temporary DB, gzip, upload to S3</li>
    </ul>
  </section>

  <section class="slide">
    <h2>Assets</h2>
    <ul>
      <li>Every non-production environment assumes assets are from production</li>
      <li>Append token to start of newly created asset filenames</li>
      <li>Check for token when generating url. If local, use non-production S3 settings</li>
    </ul>
  </section>

  <section class="slide">
    <h2>Services</h2>
    <ul>
      <li>Non-production environments all point to staging</li>
      <li>Append token to start of newly created asset filenames</li>
      <li>Check for token when generating url. If local, use non-production S3 settings</li>
    </ul>
  </section>

  <section class="slide">
    <h2>We're Hiring</h2>
    <p>We need developers (and designers if that's your thing)</p>
    <h4><a href='http://jobs.voxmedia.com'>jobs.voxmedia.com</a></h4>
  </section>

  <section class="slide">
    <h2>Questions?</h2>
    <p>Email: <a href='mailto:clif@voxmedia.com'>clif@voxmedia.com</a></p>
    <p>Twitter: <a href='https://twitter.com/#!/clifreeder'>@clifreeder</a></p>
    <p>Blog: <a href='http://blog.clifreeder.com'>blog.clifreeder.com</a></p>
  <section>
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