7. Working with Git Worktrees in Magit (emacsredux.com)

I’ll admit that until fairly recently I had no idea git worktrees existed. They’ve been part of git for a decade1 and I never once needed them. Feature branches did the job just fine - create a branch, do the work, merge it, delete it, and start over. What finally introduced me to worktrees was, of all things, AI coding agents. Tools like Claude Code create a worktree for each task, so several agents (or several sessions of the same agent) can work on the same repo in parallel without stepping on each other - or on you. Suddenly my projects directory was full of cider-this and cider-that siblings, and I figured I should understand what’s actually going on there. They were introduced in git 2.5, released all the way back in July 2015. ↩

16. 118M Queries per Second on Neki (planetscale.com)

We ran a massive, sharded Postgres database at 118.5 million queries per second, with 200k queries per second on each shard across 512 shards.

19. A Misalignment of AI in Mathematics (terrytao.wordpress.com)

I am proud to be among the list of 25 initial signatories β€” all Fields Medallists β€” to the declaration below, which grew out of discussions between ourselves over the last week. We have…

26. There is no 10x RBAC (infisical.com)

Why permissions systems are never a killer feature, and why building folder-based RBAC was still a hard engineering problem.

28. ElevenLabs Music v2.5 (elevenmusic.io)

We're introducing Music v2.5, our best music model yet, live now in ElevenMusic. It's a step up in quality across genres, and it arrives alongside changes to what you can do with the music you make.

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