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LLM Wiki

A pattern for building personal knowledge bases using LLMs.

This is an idea file, it is designed to be copy pasted to your own LLM Agent (e.g. OpenAI Codex, Claude Code, OpenCode / Pi, or etc.). Its goal is to communicate the high level idea, but your agent will build out the specifics in collaboration with you.

The core idea

Most people's experience with LLMs and documents looks like RAG: you upload a collection of files, the LLM retrieves relevant chunks at query time, and generates an answer. This works, but the LLM is rediscovering knowledge from scratch on every question. There's no accumulation. Ask a subtle question that requires synthesizing five documents, and the LLM has to find and piece together the relevant fragments every time. Nothing is built up. NotebookLM, ChatGPT file uploads, and most RAG systems work this way.

@JoshCheek
JoshCheek / Readme.md
Last active June 20, 2018 07:55
Decrypting a Rails (v4.2.0) session

How to get the values

Salts

$ rails runner 'Rails.application.config.action_dispatch.tap { |c| p encrypted_cookie_salt: c.encrypted_cookie_salt, encrypted_signed_cookie_salt: c.encrypted_signed_cookie_salt }'

Secret Key Base

@dhh
dhh / test_induced_design_damage.rb
Last active November 2, 2024 00:52
This is an extraction from Jim Weirich's "Decoupling from Rails" talk, which explained how to apply the hexagonal design pattern to make every layer of your application easily unit testable (without touching the database etc). It only seeks to extract a single method, the EmployeesController#create method, to illustrate the design damage that's …
# Original Rails controller and action
class EmployeesController < ApplicationController
def create
@employee = Employee.new(employee_params)
if @employee.save
redirect_to @employee, notice: "Employee #{@employee.name} created"
else
render :new
end
@dergachev
dergachev / GIF-Screencast-OSX.md
Last active April 11, 2026 05:03
OS X Screencast to animated GIF

OS X Screencast to animated GIF

This gist shows how to create a GIF screencast using only free OS X tools: QuickTime, ffmpeg, and gifsicle.

Screencapture GIF

Instructions

To capture the video (filesize: 19MB), using the free "QuickTime Player" application:

Different services I can suggest when a non-tech friend or family member asks me how they can cheaply make a website and possibly use it to sell stuff online.

Website Hosting

# This is an incomplete implementation.
module MongoMapper
module NestedAttributes
def self.included(base)
base.extend(ClassMethods)
base.send :include, InstanceMethods
end
module ClassMethods
def accepts_nested_attributes_for(*attr_names)