Top all-time · #18764
Code Pointer
Personal blog · codepointer.substack.comprogrammingai
Code Pointer is a personal blog at codepointer.substack.com about programming and ai. Since 2025, 4 different Hacker News readers have linked it 6 times. It is still writing: the last post was on 2026-10-05, and you can follow it by feed.
Too few sampled comments (1) to say how often HN recommends it.?
Why HN links it
HN readers link Code Pointer posts on LLM token costs and token-compression tools such as RTK, caveman and headroom. One commenter cites a related post with savings figures from a real codebase.
Summarised by Claude from a sample of 1 HN comments that link here. Each comment is marked recommending, critical or neutral (citing without judging); how this works.
5-minute code walkthrough of a specific feature, class, or method of popular open-source codebases.
What Hacker News says?
I read another post oddly similar earlier today that has more explicit data on that authors codebase: https://codepointer.substack.com/p/cutting-llm-token-costs-w... TLDR; ~3-4% savings to actual API costs with rtk, caveman, and headroom combined, but nothing tangible on if those cost reductions came at a cost of quality. By their calculations, rtk saved them $4.96 on a $926 bill.
Comment linking /p/cutting-llm-token-costs-with-rtk
on “The Token Compression Illusion: Why I'm Skeptical of RTK”Submitted Apache Hudi Dynamic Filter: 5-Minute Code Walkthrough as a story · 2 points
HN discussionSubmitted Agent Memory Systems and Knowledge Graphs: Letta, Mem0, Graphiti, and Cognee as a story · 1 points
HN discussionSubmitted OnceMap: Rust Pattern for Running Concurrent Work Exactly Once (uv codebase) as a story · 1 points
HN discussionSubmitted Polymarket: Mechanics of Trading Probability as a story · 1 points
HN discussionSubmitted Code Walkthrough - Claude Code CLI and VS Code as a story · 1 points
HN discussion