7.11.25 | AI's impact on open-source productivity, Postgres LISTEN/NOTIFY scalability issues, Grok searches X for Elon Musk's messages

This is a recap of the top 10 posts on Hacker News on Jul 11, 2025.Measuring the impact of AI on experienced open-source developer productivityhttps://metr.org/blog/2025-07-10-early-2025-ai-experienced-os-dev-study/https://news.ycombinator.com/item?id=44522772Postgres LISTEN/NOTIFY does not scalehttps://www.recall.ai/blog/postgres-listen-notify-does-not-scalehttps://news.ycombinator.com/item?id=44490510Grok: Searching X for "From:Elonmusk (Israel or Palestine or Hamas or Gaza)"https://simonwillison.net/2025/Jul/11/grok-musk/https://news.ycombinator.com/item?id=44527190Flix – A powerful effect-oriented programming languagehttps://flix.dev/https://news.ycombinator.com/item?id=44521224Show HN: Pangolin – Open source alternative to Cloudflare Tunnelshttps://github.com/fosrl/pangolinhttps://news.ycombinator.com/item?id=44526015What is Realtalk’s relationship to AI? (2024)https://dynamicland.org/2024/FAQ/#What_is_Realtalks_relationship_to_AIhttps://news.ycombinator.com/item?id=44522076Graphical Linear Algebrahttps://graphicallinearalgebra.net/https://news.ycombinator.com/item?id=44522505FOKS: Federated Open Key Servicehttps://foks.pub/https://news.ycombinator.com/item?id=44520419Show HN: Open source alternative to Perplexity Comethttps://www.browseros.com/https://news.ycombinator.com/item?id=44523409Red Hat Technical Writing Style Guidehttps://stylepedia.net/style/https://news.ycombinator.com/item?id=44521871