Tom Donarski

Ruby dev, OSS enthusiast. Mastodon: @[email protected]

[Tom Donarski @tomdonarski]

@andrzejkrzywda As in - for most accounts, which are naturally less popular, the posts were fanned out straight to cache. It was the big accounts that needed the heavy joins, and were mixed in.

[Tom Donarski @tomdonarski]

@andrzejkrzywda It blew my mind that in the original implementation of Twitter, following a celebrity effectively made your timeline generation slower (due to these joins).

[Tom Donarski @tomdonarski]

@john_my07 I haven't played with vid-gen yet but was curious what I'd get if I'd paste this prompt 1:1.

Needed to compromise on output params (4s only, lower res, Seedance 2.0 Fast) but here's what $2.00 got me:

[Tom Donarski @tomdonarski]

10/

For those interested, here are the skills I used:

HTML-parsing:
https://t.co/mDHdEN9HLa

gh CLI-based:
https://t.co/sNxhUpB7hm

[Tom Donarski @tomdonarski]

Dear Diary.
I've just optimized feeding GitHub PRs to an LLM by ~33x. Here's how I did it:

While reading @nateberkopec's Four Line Friday's post on his recent OSS contrib, I wanted to check up on something mentioned in one of his PR descriptions.

[Tom Donarski @tomdonarski]

9/

Caveats:
- I've assumed basic tokenization of `chars / 4` (even if a real tokenizer shifts both numbers up or down, it would need to shift the token counts considerably to erase a 30x+ gap)

[Garry Tan @garrytan]

I think people are sleeping a bit on how much Ruby on Rails + Claude Code is a *crazy unlock* - I mean Rails was designed for people who love syntactic sugar, and LLMs are sugar fiends.

[Leon Bambrick @secretGeek]

There are 2 hard problems in computer science: cache invalidation, naming things, and off-by-1 errors.

[Tom Donarski @tomdonarski]

@maciejmensfeld Tell more! Is it an unexpected success story or will it be a post-mortem? 😁

[Tom Donarski @tomdonarski]

Didn't expect myself to write the first blogpost ever today. 😅 #DEVCommunity https://t.co/nHtb9GKUIl

[Tom Donarski @tomdonarski]

@andrzejkrzywda @rockatanescu Haven't seen this gem of an article in a while. It goes without saying embracing alternate approaches helps one to think about software. Thanks :)

[Maciej Mensfeld @maciejmensfeld]

Had some time over the holidays, so I made a few PRs to Ruby💎

⚡ Float#to_s → 4x faster
⚡ String#to_f → 3.2x faster
⚡ String#pack('H*') → 5x faster
⚡ String#reverse → 3x faster

I may not have deep YJIT or internals knowledge, but I'm doing my best 🙂

#ruby #performance

[Tom Donarski @tomdonarski]

@robbyrussell Still using Notion. Not even LLM-friendliness towards .md files made me convert to Obsidian :/