# Agent Shell Transcript

**Agent:** Claude Code
**Started:** 2026-03-03 15:24:13
**Working Directory:** /home/fenix/napi/

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## User (2026-03-03 15:24:13)

how can i use SQLite on Cloudflare services ?



## Agent's Thoughts (2026-03-03 15:24:15)

The user is asking about using SQLite on Cloudflare services. This is a general knowledge question, not related to the napi project. Let me answer from what I know and search for current info.

Cloudflare has D1, which is their SQLite-based database service for Workers.
## Agent (2026-03-03 15:24:17)

Cloudflare offers **D1**, their native SQLite-at-the-edge database. Here's the quick rundown:

## Cloudflare D1

D1 is a serverless SQLite database built into the Cloudflare Workers platform. Your data lives on Cloudflare's network, and queries run close to your users.

### Key characteristics

- **Real SQLite** — standard SQL syntax, same engine
- **Serverless** — no connection pools, no provisioning
- **Integrated with Workers** — first-class binding, no external drivers
- **Read replicas at the edge** — writes go to a primary, reads are distributed
- **Free tier available** — 5M reads/day, 100K writes/day, 5GB storage

### Minimal example (Worker + D1)

```js
// wrangler.toml
// [[d1_databases]]
// binding = "DB"
// database_name = "my-db"
// database_id = "xxx-xxx-xxx"

export default {
  async fetch(request, env) {
    // Create table
    await env.DB.exec("CREATE TABLE IF NOT EXISTS users (id INTEGER PRIMARY KEY, name TEXT)");

    // Insert
    await env.DB.prepare("INSERT INTO users (name) VALUES (?)").bind("Fénix").run();

    // Query
    const { results } = await env.DB.prepare("SELECT * FROM users").all();

    return Response.json(results);
  }
};
```

### Setup steps

```bash
# 1. Create database
npx wrangler d1 create my-db

# 2. Add binding to wrangler.toml (output from step 1)

# 3. Run migrations
npx wrangler d1 execute my-db --local --file=./schema.sql   # local dev
npx wrangler d1 execute my-db --remote --file=./schema.sql  # production

# 4. Deploy
npx wrangler deploy
```

### Other SQLite-adjacent options on Cloudflare

| Option | Use case |
|:-------|:---------|
| **D1** | Primary choice — native SQLite, serverless, edge-distributed |
| **Durable Objects + SQLite** | Per-object embedded SQLite (since 2024) — good for per-user/per-room state |
| **Hyperdrive** | Not SQLite — connection pooler for external Postgres/MySQL |

### D1 limitations to know

- **Max DB size**: 10GB (free: 500MB)
- **Row size**: 1MB max
- **Single writer**: writes serialize through one primary location
- **No raw file access**: you interact via SQL bindings only, not `.sqlite` files
- Transactions supported but with some restrictions (no nested, no savepoints)

---

For your **napi** context specifically — if you ever wanted to move from flat `notas.md` files to a DB-backed approach on Cloudflare, D1 would be the natural fit. Though the current file-based architecture is perfectly fine for 40 students.

Want me to dig deeper into any specific aspect (D1 pricing, Durable Objects SQLite, migrations, etc.)?