{"podcast":{"title":"The Good Tech Companies","slug":"the-good-tech-companies-6882802","podcast_index_feed_id":6882802,"rss_url":"https://feeds.transistor.fm/the-good-tech-companies","website_url":"https://hackernoon.com/tagged/good-company","image_url":"https://img.transistorcdn.com/X23h0VTY2caNa7VFhjEOIIx9mhUyM13ZaqyG6noHnYw/rs:fill:0:0:1/w:1400/h:1400/q:60/mb:500000/aHR0cHM6Ly9pbWct/dXBsb2FkLXByb2R1/Y3Rpb24udHJhbnNp/c3Rvci5mbS8xMTNl/MjgwMmI0ZmEzNThj/YmJiOWNiN2UyZmRm/MzY3My5qcGVn.jpg","author":"HackerNoon","episode_count":100,"summary":"Distributing the announcements and blogs posts by the the top software, crypto, ai, futurism and technology companies. An audio story feed by HackerNoon.","last_synced_at":"2026-08-01T22:19:00.701883+00:00","page_url":"https://stenobird.com/podcast/the-good-tech-companies-6882802"},"episode":{"title":"Understanding Why OS RAM and Postgres Buffer Cache Compete","slug":"understanding-why-os-ram-and-postgres-buffer-cache-compete","published_at":"2026-05-27T08:30:48+00:00","page_url":"https://stenobird.com/podcast/the-good-tech-companies-6882802/understanding-why-os-ram-and-postgres-buffer-cache-compete","show_page_url":"https://stenobird.com/podcast/the-good-tech-companies-6882802","url":"https://share.transistor.fm/s/0f0f3657","audio_url":"https://media.transistor.fm/0f0f3657/5bd31d8e.mp3","summary":"This story was originally published on HackerNoon at: https://hackernoon.com/understanding-why-os-ram-and-postgres-buffer-cache-compete . Learn how PostgreSQL double buffering wastes RAM, increases latency, and hurts query performance — plus the 25% shared_buffers rule to fix it. Check more stories related to programming at: https://hackernoon.com/c/programming . You can also check exclusive content about #postgresql-double-buffering , #postgresql-shared_buffers , #pg_buffercache-analysis , #postgres-p95-latency , #postgresql-os-page-cache , #postgresql-memory-tuning , #effective_cache_size-tuning , #good-company , and more. This story was written by: @tigerdata . Learn more about this writer by checking @tigerdata's about page, and for more stories, please visit hackernoon.com . Many PostgreSQL performance issues aren’t caused by too little RAM, but by allocating memory to the wrong layer. Postgres and the OS both cache the same data independently, creating a “double buffering” problem that wastes memory and increases latency. This guide explains how shared_buffers and the OS page cache interact, why the 25% shared_buffers rule matters, how to diagnose cache pressure with pg_buffercache, and when tuning stops helping because the dataset itself has outgrown memory.","meta_description":"This story was originally published on HackerNoon at: https://hackernoon.com/understanding-why-os-ram-and-postgres-buffer-cache-compete . Learn how Postgr…","key_points":[],"chapters":[],"topics":[],"duration_seconds":495,"processing_state":"not_requested","actions":[{"name":"request_transcript","method":"POST","url":"https://stenobird.com/v1/public/podcasts/the-good-tech-companies-6882802/episodes/understanding-why-os-ram-and-postgres-buffer-cache-compete/transcription-requests","description":"Idempotently request low-priority transcript generation for this episode."},{"name":"read_markdown","method":"GET","url":"https://stenobird.com/podcast/the-good-tech-companies-6882802/understanding-why-os-ram-and-postgres-buffer-cache-compete.md","description":"Read the agent-friendly Markdown representation of this episode resource."}]}}