greylurk.github.io/dropwizard-to-spring.html at master · greylurk/greylurk.github.io · GitHub

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<!doctype html>
<html>
	<head>
		<meta charset="utf-8">
		<meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=no">

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	<body>
		<div class="reveal">
			<div class="slides">
        <section>
          <h1>Case Study:</h1>
          <h2>Replacing Dropwizard with Spring</h2>
        </section>
				<section>
          <h2>What's a Dropwizard?</h2>
          <ul>
            <li>
              <a href="https://dropwizard.io">Dropwizard</a> is "a java
              framework for developing ops-friendly high performance
              RESTful web services."
            </li>
            <li>
              <a href="https://spring.io">Spring</a> Framework "provides
              a comprehensive programming and configuration model for
              modern java-based enterprise applications."
            </li>
            <li>
              <a href="https://camel.apache.org">Apache Camel</a> is a
              "versatile open-source integration framework based on
              known Enterprise Integration Patterns."
            </li>
          </ul>
        </section>
        <section>
          <h2>Why leave Dropwizard?</h2>
          <ul>
            <li>We weren't really writing RESTful webservices</li>
            <li>We were already using Camel JMS, which is built on Spring
              JMS</li>
            <li>Springs support for termination protection is stronger</li>
            <li>more future proof</li>
            <li>
              Spring is an industry standard (Helps with Recruiting,
              Stack Overflow Searches)
            </li>
          </ul>
        </section>
        <section>
          <h2>Hurdles we faced?</h2>
          <ul>
            <li>Configuration moved a YAML format into a different YAML or .properties file</a>
            <li><a href="https://github.com/spscomerce/sps-java-shared">sps-java-shared</a>
              SSM support is Dropwizard specific. Needed new SSM support.</li>
            <li>Weblogic Connector in <a href="https://github.com/spscommerce/sps-java-shared">sps-java-shared</a>
              is coupled to Dropwizard</li>
            <li>DropWizard uses JDBI, but Spring uses JDBC Templates</li>
            <li>Spring doesn't have native metrics, but <a href="https://micrometer.io/">micrometer</a> is almost a drop in replacement.</li>
          </ul>
        </section>
        <section>
          <h2>Continuing Hurdles</h2>
          <ul>
            <li>Spring Boot Autodiscovery feels like magic</li>
            <li>Lack of institutional knowledge around Spring</li>
          </ul>
        </section>
        <section>
          <h2>Further reading?</h2>
          <ul>
            <li><a href="https://atlassian.spscommerce.com/wiki/display/TS/2019/01/23/Case+Study%3A+Replacing+Dropwizard+with+Spring">Blog post of this talk</a></li>
            <li><a href="https://github.com/spscommerce/sps-spring-shared">sps-spring-shared</a></li>
            <li><a href="https://github.com/spscommerce/toservice">ToService</a></li>
            <li><a href="https://github.com/spscommerce/transformservice">TransformService</a></li>
          </ul>
        </section>
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		</div>

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