{"id":56138,"date":"2017-01-19T08:00:11","date_gmt":"2017-01-19T16:00:11","guid":{"rendered":"https:\/\/redfindevelop.wpengine.com\/blog\/?p=56138"},"modified":"2020-10-05T13:11:53","modified_gmt":"2020-10-05T20:11:53","slug":"2016-a-redfin-engineering-year-in-review","status":"publish","type":"post","link":"https:\/\/www.redfin.com\/news\/2016-a-redfin-engineering-year-in-review\/","title":{"rendered":"2016: A Redfin Engineering Year in Review"},"content":{"rendered":"<figure id=\"media-56145\" class=\"align-none\"><img fetchpriority=\"high\" decoding=\"async\" class=\"aligncenter\" src=\"https:\/\/www.redfin.com\/news\/wp-content\/uploads\/2017\/01\/Year-in-Review.jpg\" alt=\"2016 Year in Review\" width=\"526\" height=\"395\" \/><\/figure>\n<h3 id=\"id-2016:ARedfinEngineeringYearinReview-Wedeploydailyoutofmaster\"><strong>We <a href=\"https:\/\/redfin.com\/blog\/2015\/10\/ship-every-day.html\">deploy daily<\/a> out of master<\/strong><\/h3>\n<p>At the beginning of 2016, we had to branch each day to ship our code.\u00a0Now, those days are long gone, and we ship out of master every day. The transition was not without its hiccups, but, through a mix of heroics, brilliance, and good old-fashioned patience, the team came together to make deploys the way we wanted them to be. And we shed a whole lot of process and overhead as well.<\/p>\n<h3 id=\"id-2016:ARedfinEngineeringYearinReview-Developersownquality\"><strong>Developers own quality<\/strong><\/h3>\n<p>For years, we lamented developers\u2019 over-reliance on manual testing to ensure quality. We\u2019d say, \u201cWe ought to have more automation,\u201d but nothing would really change. As the code base grew, our quality assurance engineers ended up on a treadmill of repeated regression. And when the QA team inevitably fell behind, we\u2019d hold up features, causing a log jam in products.<\/p>\n<p>2016 is the year that ended. Developers own quality, and they\u2019re responsible for making sure their features have adequate testing. If a feature hasn\u2019t been released, it\u2019s because the developer isn\u2019t done, not because QA ran out of time.<\/p>\n<h3 id=\"id-2016:ARedfinEngineeringYearinReview-Webuiltaqualityframework\"><strong>We built a quality framework<\/strong><\/h3>\n<p>Freed from the burden of repetitive manual testing, our quality team built an impressive framework for ensuring the quality of our code. Tools like Unified Test Reporting and Test Selector have transformed the developer workflow. A developer can deploy her code on an EC2 VM and then run automated tests or try the code by hand, harnessing the power of the cloud with the click of a button.<\/p>\n<h3 id=\"id-2016:ARedfinEngineeringYearinReview-Kafkaisacorearchitecture\"><strong>Kafka is a core architecture<\/strong><\/h3>\n<p>The Notifications Team replaced our listing updates code base with a modern one based on <a href=\"https:\/\/kafka.apache.org\/\">Kafka<\/a>, <a href=\"https:\/\/hadoop.apache.org\/docs\/current\/hadoop-yarn\/hadoop-yarn-site\/YARN.html\">Yarn<\/a>, and <a href=\"http:\/\/samza.apache.org\/\">Samza<\/a>. It\u2019s faster and easier to monitor and maintain, and contributing to massive traffic growth in the last few months. And the architecture is now available for other teams who need stream processing.<\/p>\n<h3 id=\"id-2016:ARedfinEngineeringYearinReview-Redisisacorearchitecture\"><strong>Redis is a core architecture<\/strong><\/h3>\n<p>Before 2016, Redfin did not have a built-in caching strategy. Now, we have <a href=\"https:\/\/redis.io\/\">Redis<\/a>, which is behind some of the huge performance gains we\u2019ve seen on the map and listing details page this year.<\/p>\n<h3 id=\"id-2016:ARedfinEngineeringYearinReview-WeopensourcedReactServer\"><strong>We <a href=\"https:\/\/redfin.com\/blog\/2016\/05\/announcing-react-server.html\">open sourced React Server<\/a><\/strong><\/h3>\n<p>We put ourselves on the open source map through our release of <a class=\"external-link\" href=\"https:\/\/react-server.io\/\" rel=\"nofollow\">React Server<\/a>. We\u2019re looking for more things to open source going forward, and more ways to evangelize what we\u2019re doing to other engineers.<\/p>\n<h3 id=\"id-2016:ARedfinEngineeringYearinReview-Webuiltatechleadcommunity\"><strong>We built an internal tech lead community<\/strong><\/h3>\n<p>As engineering has grown, we found ourselves with enough tech leads to start building a community among them. We brought them all together for a tech lead summit, where they discussed cross-cutting topics affecting the whole engineering org like security, build and dev environment, scaling in the cloud, and monitoring.<\/p>\n<p>We also sent our tech leads to leadership\u00a0training, the same training that Redfin managers receive. The training\u00a0focuses on soft skills like leadership, listening, and saying what you mean respectfully. These skills have become critical for our tech leads as we\u2019ve grown.<\/p>\n<h3 id=\"id-2016:ARedfinEngineeringYearinReview-We\u2019veembracedrootcauseanalysis\"><strong>We\u2019ve embraced root cause analysis<\/strong><\/h3>\n<p>When things don\u2019t go as planned, it\u2019s become natural for engineering teams to run a <a href=\"https:\/\/en.wikipedia.org\/wiki\/Root_cause_analysis\">root cause analysis<\/a> to learn how we can improve.<\/p>\n<h3 id=\"id-2016:ARedfinEngineeringYearinReview-Moreteams,morefocus\"><strong>More teams, more focus<\/strong><\/h3>\n<p>As engineering grew, we introduced seven\u00a0new engineering teams to tackle specific challenges.<\/p>\n<h3 id=\"id-2016:ARedfinEngineeringYearinReview-CommonComponentsmakedevelopmentfaster\"><strong>Common Components make development faster<\/strong><\/h3>\n<p>One of the biggest wins of our React porting project has been the Common Components library, which now includes form framework components that are powering multiple products. Our new front-end working group will carry this focus into 2017.<\/p>\n<h3 id=\"id-2016:ARedfinEngineeringYearinReview-Solong,Eclipse\"><strong>So long, Eclipse<\/strong><\/h3>\n<p>Developers who\u2019d used <a href=\"https:\/\/www.jetbrains.com\/idea\/\">IntelliJ<\/a> in the past sung its praises, saying they felt much more productive with it than with Eclipse. So, after an evaluation, we moved to IntelliJ, and recently added an optional Ultimate license for developers who need it.<\/p>\n<h3 id=\"id-2016:ARedfinEngineeringYearinReview-Solong,Maven(almost!)\"><strong>So long, Maven (almost!)<\/strong><\/h3>\n<p>Perhaps the thorniest of all of the engineering projects we tackled this year was moving from Maven to <a href=\"https:\/\/www.bazel.build\/\">Bazel<\/a>. Any Day Now, we\u2019ll be deleting Maven from our build process. Maven config files will be there only to tell IntelliJ how projects fit together &#8211; and even that, one day, we hope to remove. And once our build, test, and deploy environments are fully powered by Bazel, we\u2019ll be shifting towards improvements to the developer build experience.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>As we step into the new year, we&#8217;re celebrating our major improvements to architecture and process in 2016!<\/p>\n","protected":false},"author":13109,"featured_media":56145,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[57],"tags":[],"dashboard":[],"coauthors":[],"class_list":["post-56138","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-company-news"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v24.7 (Yoast SEO v27.5) - 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