Jacky Liang jackyliang

Vector Search Eval: Pinecone vs pgvector on Supabase

Date: March 8, 2026 Dataset: Breather knowledge base (370 files, ~2,400 chunks) Queries: 30 realistic customer questions (generated via Gemini Flash, mix of specific and broad) Judge: Gemini Flash 2.0 scoring relevance, coverage, and noise (1-5 scale)

Setup

| | Pinecone (current) | pgvector (Supabase) |

name	database-branching
description	Use when building any feature that involves database changes (new table, new column, alter column, etc.) — fork the database like a git branch. Only applies to projects using Ghost DB.

Database Branching

Overview

Treat database forks like git branches. Never make schema changes directly on the production database. Fork it, develop against the fork, merge migrations back when ready, then delete the fork.

name	test-driven-development
description	Use when building any feature (small or large), fixing bugs, or refactoring — always write failing tests first against real infrastructure

Test-Driven Development

Overview

Write the test first. Watch it fail. Write minimal code to pass. No exceptions.

	module.exports = {
	config: {
	// default font size in pixels for all tabs
	fontSize: 11,

	// font family with optional fallbacks
	fontFamily: 'Menlo, "DejaVu Sans Mono", "Lucida Console", monospace',

	// terminal cursor background color and opacity (hex, rgb, hsl, hsv, hwb or cmyk)
	cursorColor: 'rgba(248,28,229,0.8)',

	<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
	<html xmlns="http://www.w3.org/1999/xhtml">
	<head>
	<?php require_once("const.php"); ?>
	<meta http-equiv="Content-Type" content="text/html;charset=utf-8" />
	<title>Title Goes Here</title>
	<link rel="stylesheet" type="text/css" media="all" href="style.css">
	<link rel="stylesheet" type="text/css" media="all" href="owl-carousel/owl.carousel.css">
	<script src="jquery-1.11.2.js" type="text/javascript" charset="utf-8"></script>
	<script src="owl-carousel/owl.carousel.js" type="text/javascript" charset="utf-8"></script>

	Baidu Maps API Detailed Explanation
	-
	Explanation of [drawing Objects onto Baidu Maps](http://developer.baidu.com/map/jsdemo.htm#f0_7).

	Draw Shit Onto Baidu Map:
	-
	<!DOCTYPE html>
	<html>
	<head>
	<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />