Karl Horky karlhorky

Feature story: Managed Postgres and Why We're Building it After Saying We Never Would

If there's one product decision in the history of the company we often wish we could revisit, it's how we've handled databases. In 2025, one of the biggest things we're doing is reversing that decision. So, here in this January newsletter, let's read you in to our plan.

For most of the life of this company, we've offered "unmanaged" (or, more charitably, "automated") Postgres. That's a system in which we help you stand up a Postgres cluster, optimized in some ways by us for the Fly.io platform, and then leave you to operate and scale it. We call that feature "Fly Postgres". Sometime in the relatively near future, we'll be superseding it with a managed database, called Fly MPG.

Real quick, let's recap how we got here.

People who have been with us for a long time might remember, we launched Fly.io without persistent storage of any kind. Back in 2020, we were an "edge compute provider", and our platform was optimized for

About

The privacy details that you may need to add for Apple Privacy Manifest.

This config plugin it's already available from expo >=50.0.17 (Part of this PR by aleqsio)

Tip

Read more about Privacy Manifest File from Apple docs

	## User Background
	I am a programming beginner with limited knowledge of coding terminology and concepts. Please explain things in simple terms and avoid assuming I understand technical jargon.

	## Assistance Style
	- Act as a full-fledged coding assistant, generating complete code based on my prompts and instructions.
	- I do not write any code myself; I rely entirely on your code generation.
	- Provide detailed explanations for the code you write, breaking down concepts in a way that's easy for a beginner to understand.

	## Code Generation
	- Write complete, functional code snippets or full programs based on my descriptions and requirements.

	DO NOT GIVE ME HIGH LEVEL THEORY, IF I ASK FOR FIX OR EXPLANATION, I WANT ACTUAL CODE OR EXPLANATION!!!!
	DON'T WANT "Here's how you can blablabla"

	- Be casual unless otherwise specified
	- Be terse and concise
	- Suggest solutions that I didn't think about - anticipate my needs
	- Treat me as an expert
	- Be accurate and thorough
	- Give the answer immediately. Provide detailed explanations and restate my query in your own words if necessary after giving the answer
	- Value good arguments over authorities, the source is irrelevant

	DO NOT GIVE ME HIGH LEVEL SHIT, IF I ASK FOR FIX OR EXPLANATION, I WANT ACTUAL CODE OR EXPLANATION!!! !

	DON'T WANT "Here's how you can blablabla"

	Be casual unless otherwise specified
	Be terse
	Suggest solutions that I didn't think about-anticipate my needs
	- treat me as an expert
	Be accurate and thorough
	Give the answer immediately. Provide detailed explanations and restate my query in your own words if necessary after giving the answer

	# Original instructions: https://forum.cursor.com/t/share-your-rules-for-ai/2377/3
	# Original original instructions: https://x.com/NickADobos/status/1814596357879177592

	You are an expert AI programming assistant that primarily focuses on producing clear, readable SwiftUI code.

	You always use the latest version of SwiftUI and Swift, and you are familiar with the latest features and best practices.

	You carefully provide accurate, factual, thoughtful answers, and excel at reasoning.

	- Follow the user’s requirements carefully & to the letter.

	// Migrate from eslint-plugin-import (no ESLint v9 support, multiple issues and missing features)
	// to eslint-plugin-import-x
	//
	// - https://www.npmjs.com/package/eslint-plugin-import
	// - https://www.npmjs.com/package/eslint-plugin-import-x

	// First, install `eslint-plugin-import-x` (and for TypeScript support, `@typescript-eslint/parser`)

	-import eslintImport from 'eslint-plugin-import';
	+import eslintImportX from 'eslint-plugin-import-x';

	// Express middleware to disable Gatsby window.replaceState() to
	// avoid changing new rewritten URLs back to original URLs
	// https://github.com/gatsbyjs/gatsby/blob/c91ed287fd319a345c2f27877e20656826767e92/packages/gatsby/cache-dir/production-app.js#L159-L187

	const appJsFilePath = existingGatsbyFiles.find((filePath) =>
	/^\/app-[\da-f]+\.js$/.test(filePath),
	)!;
	const appJsContent = readFileSync(
	join(websitePath, 'public', appJsFilePath),
	'utf-8',

	# syntax = docker/dockerfile:1

	# Adjust BUN_VERSION as desired
	ARG BUN_VERSION=1.1.1
	FROM oven/bun:${BUN_VERSION}-slim as base

	LABEL fly_launch_runtime="Next.js"

	# Next.js app lives here
	WORKDIR /app

	// guests+api.ts
	import { ExpoRequest, ExpoResponse } from 'expo-router/server';
	import { guestList, Guest } from './index+api.ts';

	export const guestList: Guest[] = [];

	export function GET(request: ExpoRequest): ExpoResponse {
	return ExpoResponse.json(guestList);
	}