I make. I learn. I write. https://klaasnotfound.com Mon, 05 Jan 2026 15:11:40 GMT https://klaasnotfound.com/2025/11/10/exponential-backoff-in-nestjs/ http://sveltekit-prerender/2025/11/10/exponential-backoff-in-nestjs/ Mon, 10 Nov 2025 00:00:00 GMT NestJS has great tooling for rate limiting requests but somehow does not implement exponential backoff. Let's fix that. https://klaasnotfound.com/2025/09/12/whats-up-with-small-scale-caes/ http://sveltekit-prerender/2025/09/12/whats-up-with-small-scale-caes/ Fri, 12 Sep 2025 00:00:00 GMT Compressed air energy storage has amazing economics at large scale. Why don't we see more modular, small-scale commercialization of this technology? https://klaasnotfound.com/2025/07/09/sodium-ion-batteries-wont-free-us-from-chinese-market-dominance/ http://sveltekit-prerender/2025/07/09/sodium-ion-batteries-wont-free-us-from-chinese-market-dominance/ Wed, 09 Jul 2025 00:00:00 GMT Western policy makers and investors have recurring hopes that non-lithium battery chemistries might free us from Chinese dominance in the global battery market. I don't think that's likely to happen. https://klaasnotfound.com/2025/06/23/fixing-the-pump-pressure-of-the-rancilio-silvia-espresso-machine/ http://sveltekit-prerender/2025/06/23/fixing-the-pump-pressure-of-the-rancilio-silvia-espresso-machine/ Mon, 23 Jun 2025 00:00:00 GMT It's the solenoid valve, stupid! https://klaasnotfound.com/2025/06/03/terraform-industries-business-case-doesnt-add-up/ http://sveltekit-prerender/2025/06/03/terraform-industries-business-case-doesnt-add-up/ Tue, 03 Jun 2025 00:00:00 GMT Terraform Industries says it will produce synthetic natural gas at competitive prices within the next decade. I doubt that is possible. https://klaasnotfound.com/2025/03/27/how-much-renewable-energy-do-we-need/ http://sveltekit-prerender/2025/03/27/how-much-renewable-energy-do-we-need/ Thu, 27 Mar 2025 00:00:00 GMT How much wind, solar, hydro etc. would each country need to cover all of its primary energy use with renewables? https://klaasnotfound.com/2025/03/17/relaunching-this-blog/ http://sveltekit-prerender/2025/03/17/relaunching-this-blog/ Mon, 17 Mar 2025 00:00:00 GMT After a multi-year hiatus, I have decided to blog again. Rejoice! https://klaasnotfound.com/2017/01/26/smooth-ken-burns-effect-sequence-in-imovie/ http://sveltekit-prerender/2017/01/26/smooth-ken-burns-effect-sequence-in-imovie/ Thu, 26 Jan 2017 00:00:00 GMT Ken Burns is a great way to animate still images. Unfortunately, iMovie only allows you to pan and zoom from one point to another. I'll show how to smoothly chain several transitions. https://klaasnotfound.com/2016/08/09/calculating-the-k-factor-from-app-invites/ http://sveltekit-prerender/2016/08/09/calculating-the-k-factor-from-app-invites/ Tue, 09 Aug 2016 00:00:00 GMT The k-factor is an important metric for measuring viral growth. I'll show you how to calculate it when users invite other users to an app. https://klaasnotfound.com/2016/06/05/creating-cmyk-prepress-pdfs-with-inkscape-and-scribus/ http://sveltekit-prerender/2016/06/05/creating-cmyk-prepress-pdfs-with-inkscape-and-scribus/ Sun, 05 Jun 2016 00:00:00 GMT Inkscape cannot export prepress PDFs. Scribus can, though. I'll show you how. https://klaasnotfound.com/2016/05/27/location-on-android-stop-mocking-me/ http://sveltekit-prerender/2016/05/27/location-on-android-stop-mocking-me/ Fri, 27 May 2016 00:00:00 GMT Scroll to the bottom and grab a Java class that solves all issues of setting up location services and detecting mock locations across all relevant Android versions.