3-2-1 before bed time
from reddit:the 321 rule before bed revitalised my sleep quality and HRV massively.Like you mentioned, limit food 3 hours before bed.Limit liquid intake 2 hours before bed.Limit light sources 1 hour before bed, especi...
Today I Learned
Short notes on things I am learning. Inspired by Simon Willison's TILs.
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prepare your mind
Today I learned about the Prepare your Mind concept from Sebastian Wallaby, writer of the Infinity Machine (DeepMind story). He was asked by Tim Ferriss, what would he put on a billboard. He said, “prepare your mind”....
luxury-software
https://www.lennysnewsletter.com/p/father-of-the-ipod-and-iphone-onI was impressed by Tony Fadell’s quote of writing “luxury software”. He compare Claude Code’s leaked codebase to H&M. A mess, caused by engineers ...
claude and openai have different memory systems
OpenAI just added project specific memory.https://simonwillison.net/2025/Sep/12/claude-memory/
PG will not run CTEs unreferenced
Postgres will not run any CTEs not referenced in the main query. It’s a form of optimization in newer versions.E.g.,WITH will_not_run AS (SELECT 1/0), ok AS (SELECT 1)SELECT * FROM ok;
Primary and second replicas in Postgres
In Postgres, you can have a primary read/write instance, and a read only hot-standby to serve requests at a high volume. When you update the primary replica, it sends updates via a stream of logs to the replica.If the...
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