David Lorenz, Supabase Expert, Web ArchitectDavid Lorenz is a web architect with 25 years of coding experience and always cutting-edge tech-informed. As the Supabase book author, he helps you solve whatever web challenge you need to overcome.https://activeno.de/docker build with private credentials — the issue with intermediate layer secretshttps://activeno.de/blog/2018-03/docker-build-with-private-keys-and-credentials/https://activeno.de/blog/2018-03/docker-build-with-private-keys-and-credentials/Learn to prevent leaving secrets in docker images.Sat, 03 Mar 2018 00:00:00 GMTHow I tricked the whole Meetup into voluntarily giving me their browser history with CSShttps://activeno.de/blog/2017-02/how-i-read-the-browser-history-with-css/https://activeno.de/blog/2017-02/how-i-read-the-browser-history-with-css/CSS can be abused to retrieve specific sensitive data, not arbitrary one though.Sat, 11 Feb 2017 00:00:00 GMTAn intro into Web Components, Shadow DOM, Shadow CSShttps://activeno.de/blog/2020-04/web-components-shadow-dom-shadow-css-intro/https://activeno.de/blog/2020-04/web-components-shadow-dom-shadow-css-intro/The quickest tldr about Web Components you can getSat, 18 Apr 2020 00:00:00 GMTJavaScript Promises tl;drhttps://activeno.de/blog/2021-12/javascript-promises-tldr/https://activeno.de/blog/2021-12/javascript-promises-tldr/The quickest way to learn about PromisesMon, 20 Dec 2021 00:00:00 GMTGetting a job at Amazon: From interview to offerhttps://activeno.de/blog/2022-02/getting-interviewed-at-amazon/https://activeno.de/blog/2022-02/getting-interviewed-at-amazon/Learn about my experience from 0 to Job offer at Amazon.Mon, 28 Feb 2022 00:00:00 GMTDesign for Failure Principle: Your Software should breakhttps://activeno.de/blog/2023-01/design-for-failure-software-should-break/https://activeno.de/blog/2023-01/design-for-failure-software-should-break/I've been preaching Design for Failure for a very long time. And I'm still holding on to it but you gotta be careful what you wish for. Many people overdo it and make their development lifecycle harder than it should be.Mon, 09 Jan 2023 00:00:00 GMTsrcset, sizes, picture, media: What you might not have known. https://activeno.de/blog/2020-09/understanding-html-specs-srcset-sizes-picture-media/https://activeno.de/blog/2020-09/understanding-html-specs-srcset-sizes-picture-media/Learn about the deep details of images in HTML.Tue, 29 Sep 2020 00:00:00 GMTTruth talk: How to get rich in short timehttps://activeno.de/blog/2023-06/truth-talk-how-to-get-rich-quickly/https://activeno.de/blog/2023-06/truth-talk-how-to-get-rich-quickly/Learn about my experience from 0 to Job offer at Amazon.Mon, 28 Feb 2022 00:00:00 GMTThe ultimate Supabase self-hosting Guidehttps://activeno.de/blog/2023-08/the-ultimate-supabase-self-hosting-guide/https://activeno.de/blog/2023-08/the-ultimate-supabase-self-hosting-guide/Set up Supabase securely on your own serversFri, 25 Aug 2023 00:00:00 GMTDigging the Next.js source code: A nightmarehttps://activeno.de/blog/2024-04/nextjs-sourcecode-nightmare/https://activeno.de/blog/2024-04/nextjs-sourcecode-nightmare/The DX of Next.js seems great, but it's source code is convoluted on its very own levelThu, 25 Apr 2024 00:00:00 GMTLow performance and congestion: Why connecting your database via Serverless can be dangeroushttps://activeno.de/blog/2025-06/properly-connecting-with-a-database-on-serverless/https://activeno.de/blog/2025-06/properly-connecting-with-a-database-on-serverless/In a world full of serverless providers like Vercel with its Fluid Compute, it’s surprisingly easy to throttle your app’s performance by connecting directly to a database. Even worse: hardly anyone seems to talk about why this happens.Sun, 29 Jun 2025 00:00:00 GMTSupabase or Keycloak - The complete Guidehttps://activeno.de/blog/2025-01/supabase-or-keycloak-complete-guide/https://activeno.de/blog/2025-01/supabase-or-keycloak-complete-guide/Choosing the right tools for authentication and authorization can make or break your web application's security and user experience. In this article, we'll explore the key differences between **Supabase** and **Keycloak**, two powerful platforms for identity management.Mon, 27 Jan 2025 00:00:00 GMT