Turso & Astro

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Turso is a distributed database built on libSQL, a fork of SQLite. It is optimized for low query latency, making it suitable for global applications.

Initializing Turso in Astro

Prerequisites

The Turso CLI installed and signed in
A Turso Database with schema
Your Database URL
An Access Token

Configure environment variables

Obtain your database URL using the following command:

turso db show <database-name> --url

Create an auth token for the database:

turso db tokens create <database-name>

Add the output from both commands above into your .env file at the root of your project. If this file does not exist, create one.

TURSO_DATABASE_URL=libsql://...
TURSO_AUTH_TOKEN=

:::cautionDo not use the PUBLIC_ prefix when creating these private environment variables. This will expose these values on the client.:::

Install LibSQL Client

Install the @libsql/client to connect Turso to Astro:

 npm install @libsql/client

 pnpm add @libsql/client

 yarn add @libsql/client

Initialize a new client

Create a file turso.ts in the src folder and invoke createClient, passing it TURSO_DATABASE_URL and TURSO_AUTH_TOKEN:

import { createClient } from "@libsql/client/web";

export const turso = createClient({
  url: import.meta.env.TURSO_DATABASE_URL,
  authToken: import.meta.env.TURSO_AUTH_TOKEN,
});

Querying your database

To access information from your database, import turso and execute a SQL query inside any .astro component.

The following example fetches all posts from your table, then displays a list of titles in a <BlogIndex /> component:

---
import { turso } from '../turso'

const { rows } = await turso.execute('SELECT * FROM posts')
---

<ul>
  {rows.map((post) => (
    <li>{post.title}</li>
  ))}
</ul>

SQL Placeholders

The execute() method can take an object to pass variables to the SQL statement, such as slug, or pagination.

The following example fetches a single entry from the posts table WHERE the slug is the retrieved value from Astro.params, then displays the title of the post.

---
import { turso } from '../turso'

const { slug } = Astro.params

const { rows } = await turso.execute({
  sql: 'SELECT * FROM posts WHERE slug = ?',
  args: [slug!]
})
---

<h1>{rows[0].title}</h1>