{"id":32643,"date":"2021-05-28T17:31:01","date_gmt":"2021-05-28T21:31:01","guid":{"rendered":"https:\/\/mjtsai.com\/blog\/?p=32643"},"modified":"2021-05-28T17:31:01","modified_gmt":"2021-05-28T21:31:01","slug":"ubers-crazy-yolo-app-rewrite","status":"publish","type":"post","link":"https:\/\/mjtsai.com\/blog\/2021\/05\/28\/ubers-crazy-yolo-app-rewrite\/","title":{"rendered":"Uber&rsquo;s Crazy YOLO App Rewrite"},"content":{"rendered":"<p><a href=\"https:\/\/blog.pragmaticengineer.com\/uber-app-rewrite-yolo\/\">Gergely Orosz<\/a> (via <a href=\"https:\/\/news.ycombinator.com\/item?id=27267368\">Hacker News<\/a>):<\/p>\n<blockquote cite=\"https:\/\/blog.pragmaticengineer.com\/uber-app-rewrite-yolo\/\"><p>The mobile platform team has been working on the project for a few months, coming up with <a href=\"https:\/\/github.com\/uber\/RIBs\">RIBs<\/a>, a new architecture we&rsquo;re using for the project. For the program teams - the ones building features -, the work started a few weeks ago. We have less than 3 months: the rewrite needs to be done by 16 September. Every last screen of the old app will not only be ported, but re-imagined, UX and workflows changed.<\/p>\n<p>[&#8230;]<\/p>\n<p>I tell him we cannot make the deadline. Not unless we cut the scope, push back the timeline, or add more people. Ideally, all three. He says we&rsquo;ll see what we can do.<\/p>\n<p>[&#8230;]<\/p>\n<p>The pace of work is still excruciatingly slow. Tooling is a major issue: compiling the app from scratch takes 25-30 minutes on iOS and around 10 on Android. Landing a change to master can take hours and hours, due to to the long-running test suite, the merge conflicts thanks to the large number of changes and flakey UI tests.<\/p>\n<p>[&#8230;]<\/p>\n<p>None of us know for sure what the app release strategy will be until a week before launch. Then it&rsquo;s confirmed. We&rsquo;re going YOLO.<\/p><\/blockquote>\n\n<p>They wanted to release a combined app that included both the old and new versions, so they could do a gradual rollout, but it wouldn&rsquo;t fit under the 100 MB App Store cap for cellular downloads.<\/p>\n\n<blockquote cite=\"https:\/\/blog.pragmaticengineer.com\/uber-app-rewrite-yolo\/\">\n<p>Considering the circumstances, the launch was a roaring success. Very few critical bugs were found: which was impressive, considering the YOLO release and how little time we had to test.<\/p>\n<p>[&#8230;]<\/p>\n<p>Helix took a huge toll on most people. A few people quit during the project, but the majority of resignation notices came after we shipped the app. Many people did not even stick around a few months for March bonuses.<\/p>\n<\/blockquote>\n\n<p>Previously:<\/p>\n<ul>\n<li><a href=\"https:\/\/mjtsai.com\/blog\/2020\/12\/10\/rewriting-the-uber-app-in-swift\/\">Rewriting the Uber App in Swift<\/a><\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"<p>Gergely Orosz (via Hacker News): The mobile platform team has been working on the project for a few months, coming up with RIBs, a new architecture we&rsquo;re using for the project. For the program teams - the ones building features -, the work started a few weeks ago. We have less than 3 months: the [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"apple_news_api_created_at":"2021-05-28T21:31:05Z","apple_news_api_id":"f7f1ed4d-1150-4446-b7db-dc08abcc4f95","apple_news_api_modified_at":"2021-05-28T21:31:06Z","apple_news_api_revision":"AAAAAAAAAAD\/\/\/\/\/\/\/\/\/\/w==","apple_news_api_share_url":"https:\/\/apple.news\/A9_HtTRFQREa329wIq8xPlQ","apple_news_coverimage":0,"apple_news_coverimage_caption":"","apple_news_is_hidden":false,"apple_news_is_paid":false,"apple_news_is_preview":false,"apple_news_is_sponsored":false,"apple_news_maturity_rating":"","apple_news_metadata":"\"\"","apple_news_pullquote":"","apple_news_pullquote_position":"","apple_news_slug":"","apple_news_sections":"\"\"","apple_news_suppress_video_url":false,"apple_news_use_image_component":false,"footnotes":""},"categories":[4],"tags":[248,249,91,31,1137,26,71,2074,901,268,1441,251],"class_list":["post-32643","post","type-post","status-publish","format-standard","hentry","category-programming-category","tag-android","tag-androidapp","tag-appstore","tag-ios","tag-ios-9","tag-iosapp","tag-programming","tag-software-rewrite","tag-swift-programming-language","tag-testing","tag-uber","tag-working"],"apple_news_notices":[],"_links":{"self":[{"href":"https:\/\/mjtsai.com\/blog\/wp-json\/wp\/v2\/posts\/32643","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/mjtsai.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/mjtsai.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/mjtsai.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/mjtsai.com\/blog\/wp-json\/wp\/v2\/comments?post=32643"}],"version-history":[{"count":1,"href":"https:\/\/mjtsai.com\/blog\/wp-json\/wp\/v2\/posts\/32643\/revisions"}],"predecessor-version":[{"id":32644,"href":"https:\/\/mjtsai.com\/blog\/wp-json\/wp\/v2\/posts\/32643\/revisions\/32644"}],"wp:attachment":[{"href":"https:\/\/mjtsai.com\/blog\/wp-json\/wp\/v2\/media?parent=32643"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/mjtsai.com\/blog\/wp-json\/wp\/v2\/categories?post=32643"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/mjtsai.com\/blog\/wp-json\/wp\/v2\/tags?post=32643"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}