Johannes van der Merwe https://www.johannesmerwe.com/writing Writing about software development, design, and life. Wed, 29 Jul 2026 12:31:49 GMT https://validator.w3.org/feed/docs/rss2.html Feed for Node.js Johannes van der Merwe https://www.johannesmerwe.com/static/og/writing.png https://www.johannesmerwe.com/writing All rights reserved 2026, Johannes van der Merwe <![CDATA[South Africa’s rooftop solar boom outlived load shedding]]> https://www.johannesmerwe.com/writing/south-africa-rooftop-solar-numbers https://www.johannesmerwe.com/writing/south-africa-rooftop-solar-numbers Mon, 03 Aug 2026 05:00:00 GMT <![CDATA[Integrating AI into your business, by depth]]> https://www.johannesmerwe.com/writing/integrating-ai-into-your-business-guide https://www.johannesmerwe.com/writing/integrating-ai-into-your-business-guide Wed, 29 Jul 2026 09:09:32 GMT <![CDATA[What actually happens to your data on AWS, OpenAI, and Anthropic]]> https://www.johannesmerwe.com/writing/what-happens-to-your-data-aws-openai-anthropic https://www.johannesmerwe.com/writing/what-happens-to-your-data-aws-openai-anthropic Mon, 27 Jul 2026 13:18:30 GMT <![CDATA[Secure AI use in a business: a guide, not another checklist]]> https://www.johannesmerwe.com/writing/secure-ai-use-in-a-business-guide https://www.johannesmerwe.com/writing/secure-ai-use-in-a-business-guide Mon, 27 Jul 2026 10:08:53 GMT <![CDATA[Two-pot withdrawals: what the numbers actually say]]> https://www.johannesmerwe.com/writing/two-pot-withdrawals-what-the-numbers-say https://www.johannesmerwe.com/writing/two-pot-withdrawals-what-the-numbers-say Mon, 27 Jul 2026 05:00:00 GMT <![CDATA[I tried to predict gold prices with a trend line. It lost to doing nothing.]]> https://www.johannesmerwe.com/writing/forecasting-baseline-beats-linear-trend https://www.johannesmerwe.com/writing/forecasting-baseline-beats-linear-trend Fri, 24 Jul 2026 07:14:34 GMT <![CDATA[Your SaaS bill has a hidden 64% swing and it has nothing to do with the vendor]]> https://www.johannesmerwe.com/writing/usd-zar-software-cost-swing https://www.johannesmerwe.com/writing/usd-zar-software-cost-swing Thu, 23 Jul 2026 09:09:35 GMT <![CDATA[Three things I left out of the permission intersection demo, on purpose]]> https://www.johannesmerwe.com/writing/permission-intersection-production-gaps https://www.johannesmerwe.com/writing/permission-intersection-production-gaps Thu, 23 Jul 2026 08:17:51 GMT <![CDATA[Why every AI agent security post says the same three things right now]]> https://www.johannesmerwe.com/writing/ai-agent-identity-convergence-2026 https://www.johannesmerwe.com/writing/ai-agent-identity-convergence-2026 Wed, 22 Jul 2026 12:35:19 GMT <![CDATA[A five-file pipeline instead of opening an app]]> https://www.johannesmerwe.com/writing/automate-hobby-data-instead-of-an-app https://www.johannesmerwe.com/writing/automate-hobby-data-instead-of-an-app Wed, 22 Jul 2026 12:25:38 GMT <![CDATA[What ten years of gold prices actually say about the Rand]]> https://www.johannesmerwe.com/writing/gold-price-rand-decade-data https://www.johannesmerwe.com/writing/gold-price-rand-decade-data Wed, 22 Jul 2026 12:11:41 GMT <![CDATA[What August 2 actually changes if your AI agent touches your database]]> https://www.johannesmerwe.com/writing/august-2-ai-act-permission-intersection https://www.johannesmerwe.com/writing/august-2-ai-act-permission-intersection Wed, 22 Jul 2026 09:49:44 GMT <![CDATA[Five changes that matter more than the watch itself]]> https://www.johannesmerwe.com/writing/five-changes-that-matter-more-than-the-watch https://www.johannesmerwe.com/writing/five-changes-that-matter-more-than-the-watch Wed, 22 Jul 2026 08:54:57 GMT <![CDATA[South Africa’s gambling statistics]]> https://www.johannesmerwe.com/writing/south-africa-gambling-statistics https://www.johannesmerwe.com/writing/south-africa-gambling-statistics Thu, 16 Jul 2026 05:00:00 GMT <![CDATA[Golf Shot Analyzer for InRange™]]> https://www.johannesmerwe.com/writing/golf-shot-analyzer https://www.johannesmerwe.com/writing/golf-shot-analyzer Mon, 11 May 2026 02:20:00 GMT <![CDATA[Life without a Phone, just a Smartwatch]]> https://www.johannesmerwe.com/writing/life-without-a-phone https://www.johannesmerwe.com/writing/life-without-a-phone Thu, 30 Oct 2025 18:43:18 GMT <![CDATA[Building advanced chat interfaces with the Zeta Alpha API]]> https://www.johannesmerwe.com/writing/advanced-chat-interfaces https://www.johannesmerwe.com/writing/advanced-chat-interfaces Wed, 26 Mar 2025 08:31:02 GMT <![CDATA[Writing your first AI model with PyTorch and Torchvision]]> https://www.johannesmerwe.com/writing/a-guide-to-writing-your-first-ai-model https://www.johannesmerwe.com/writing/a-guide-to-writing-your-first-ai-model Mon, 27 Jan 2025 00:15:00 GMT <![CDATA[Welcome]]> https://www.johannesmerwe.com/writing/welcome https://www.johannesmerwe.com/writing/welcome Mon, 20 Jan 2025 02:35:35 GMT