Jonas Kraska JonasKraska

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.

Handling optional input parameters in PHP with `vimeo/psalm` and `azjezz/psl`

I had an interesting use-case with a customer for which I provide consulting services: they needed multiple fields to be marked as "optional".

Example: updating a user

We will take a CRUD-ish example, for the sake of simplicity.

For example, in the following scenario, does a null $description mean "remove the description",

Git-flow vs GitHub-flow

What we want

A list of requirements:

stakeholders expect a list of provided features, every few days, in a human-friendly report
every change must have been reviewed, before being deployed
every change must have passed our automated checks, before being deployed
every change must have been verified by QA staff, before being deployed

`__invoke` VS `function` VS `Closure`

This gist is about:

Mainly:

function cannot (should not) be used when side-effects occur

Bash Shortcuts

Moving

command	description
ctrl + a	Goto BEGINNING of command line

	<?php declare(strict_types = 1);

	function testPerformance($name, Closure $closure, $runs = 1000000)
	{
	$start = microtime(true);
	for (; $runs > 0; $runs--)
	{
	$closure();
	}
	$end = microtime(true);