Stop writing boilerplate: A Single Source of Truth for Rust, Go, Python and TS

hlop3z — Thu, 29 Jan 2026 04:14:42 +0000

One Schema to Rule Them All

Keeping database schemas in sync across Rust, Go, Python, and TypeScript is painful: you update a table, then update structs, then interfaces… and pray you didn't make a typo.

I built AstrolaDB, a standalone CLI in Go, to solve this. Define your schema once in JavaScript, then generate SQL migrations and type-safe code for multiple languages. Without Node.js, Python or JVM.

GitHub: github.com/hlop3z/astroladb
Docs: hlop3z.github.io/astroladb

Why Multi-Language Schemas Hurt

Typical workflow across multiple services:

Update a table in Postgres
Update structs in Rust, Go, or Python
Update interfaces in TypeScript
Pray nothing breaks

Schemas inevitably drift apart. I wanted a single source of truth without locking into an ORM or heavy runtime.

One Schema, Many Languages

AstrolaDB (alab) is a schema-as-code orchestration tool:

⚡ Write your schema once in JavaScript
🚀 Generate SQL migrations, native types, and OpenAPI specs
🧩 Logical namespacing for tables like auth.user or billing.invoice
🏋️ Runs as a single ~8MB binary, locally or in CI

Supports Rust, Go, Python, TypeScript, and more.

How It's Different

Zero Dependencies: Single binary, no Node.js, Python, or JVM
Embedded JS Engine: Uses Goja for fast, portable JS execution
Developer-Friendly: Live preview, quick generation and type-safe code

Quick Start

Download Release

# Initialize demo project
alab init --demo

# Preview schema in browser
alab live

# Generate code
alab export -f all

Example: Auth User Table

Write your schema once and generate outputs for multiple languages.

Schema

// schemas/auth/user.js
export default table({
  id: col.id(),
  username: col.string(50).unique(),
  age: col.integer().optional(),
});

Generated Rust

#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct AuthUser {
    pub id: String,
    pub username: String,
    pub age: Option<i32>,
}

Generated Go

type AuthUser struct {
    Id       string  `json:"id"`
    Username string  `json:"username"`
    Age      *int32  `json:"age,omitempty"`
}

Full examples for Python and TypeScript are in the Code Generation.

Built with DX in Mind

How It Works

Try It Today

Define your schema once, generate type-safe code in minutes, and stop worrying about typos across languages.

Share your thoughts in the comments or open an issue on GitHub. I built AstrolaDB to solve my own polyglot headaches, now I want to make it useful for you.

hlop3z / astroladb

Schema-first platform with multi-language type exports, auto-migrations and a generator runtime for building REST APIs, GraphQL, SDKs, and more.

AstrolaDB (alab)

One schema: many outputs.

Stop writing boilerplate. Define your data model once. Use custom generators to produce REST APIs in FastAPI, Go Chi, Rust Axum, or tRPC. Export types, SQL migrations, and OpenAPI specs directly from the core engine.

Documentation

Quick Start Guide — Get started in 5 minutes
Tutorial — Build your first project
Generator Guide — Write custom generators
Migration Reference — Schema evolution
Field Types — All available column types
CLI Commands — Complete command reference

Download Release

Or install via script:

curl -fsSL https://raw.githubusercontent.com/hlop3z/astroladb/main/install.sh | sh

One Schema

// schemas/blog/post.js
export default table({
  id: col.id(),
  title: col.title(),
  body: col.text(),
  author: col.belongs_to("auth.user"), // Foreign key
  published: col.flag(),
}

…

View on GitHub

Forem: hlop3z

Stop writing boilerplate: A Single Source of Truth for Rust, Go, Python and TS

One Schema to Rule Them All

Why Multi-Language Schemas Hurt

One Schema, Many Languages

How It's Different

Quick Start

Example: Auth User Table

Schema

Generated Rust

Generated Go

Built with DX in Mind

How It Works

Try It Today

hlop3z / astroladb

Schema-first platform with multi-language type exports, auto-migrations and a generator runtime for building REST APIs, GraphQL, SDKs, and more.

AstrolaDB (alab)

Documentation

Download Release

One Schema