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Counter caches for Rails computed from any block, such as conditional counts or sums, kept up to date by callbacks on any number of models and stored in a column, a shared counters table or your cache store. Recounts run after commit, so concurrent saves can't leave a stale value.

Download Medium posts as clean Markdown, preserving structure, images, links, code blocks, and common embeds for plain Markdown or Jekyll workflows.

:arrows_clockwise: Easy to use finite state machine for Crystal classes

  • crystal
  • state-machine
  • aasm

Python XML-based template engine with Genshi-like syntax and Jinja-style blocks

  • python
  • python3
  • template-engine
  • xml

A little Python utility that lets you monitor Bitcoin addresses through Blockchain Websocket API and perform custom callbacks.

🛡️ Free AI that blocks hackers while you sleep. Runs on cheap hardware. When someone in Tokyo gets attacked, you're protected in 30 seconds. No fees. No experts needed. Just protection. One node's detection → everyone's protection.