docs: add postgres and sqlocal instructions

docs/usage/database.mdx

@@ -55,12 +55,65 @@ connection object to your new database:
 }
 ```
 
-### Custom Connection
-<Note>
-   Follow the progress of custom connections on its [Github Issue](https://github.com/bknd-io/bknd/issues/24).
-   If you're interested, make sure to upvote so it can be prioritized.
-</Note>
+### Cloudflare D1
+Using the [Cloudflare Adapter](/integration/cloudflare), you can choose to use a D1 database binding. To do so, you only need to add a D1 database to your `wrangler.toml` and it'll pick up automatically. To manually specify which D1 database to take, you can specify it manually:
 
+```ts
+import { serve, d1 } from "bknd/adapter/cloudflare";
+
+export default serve<Env>({
+  app: ({ env }) => d1({ binding: env.D1_BINDING })
+});
+```
+
+### PostgreSQL
+To use bknd with Postgres, you need to install the `@bknd/postgres` package. You can do so by running the following command:
+
+```bash
+npm install @bknd/postgres
+```
+
+This package uses `pg` under the hood. If you'd like to see `postgres` or any other flavor, please create an [issue on Github](https://github.com/bknd-io/bknd/issues/new).
+
+To establish a connection to your database, you can use any connection options available on the [`pg`](https://node-postgres.com/apis/client) package. Here is a quick example using the [Node.js Adapter](http://localhost:3000/integration/node):
+
+```js
+import { serve } from "bknd/adapter/node";
+import { PostgresConnection } from "@bknd/postgres";
+
+/** @type {import("bknd/adapter/node").NodeBkndConfig} */
+const config = {
+   connection: new PostgresConnection({
+      connectionString:
+         "postgresql://user:password@localhost:5432/database",
+   }),
+};
+
+serve(config);
+```
+
+### SQLocal
+To use bknd with `sqlocal` for a offline expierence, you need to install the `@bknd/sqlocal` package. You can do so by running the following command:
+
+```bash
+npm install @bknd/sqlocal
+```
+
+This package uses `sqlocal` under the hood. Consult the [sqlocal documentation](https://sqlocal.dallashoffman.com/guide/setup) for connection options:
+
+```js
+import { createApp } from "bknd";
+import { SQLocalConnection } from "@bknd/sqlocal";
+
+const app = createApp({
+   connection: new SQLocalConnection({
+      databasePath: ":localStorage:",
+      verbose: true,
+   })
+});
+```
+
+### Custom Connection
 Any bknd app instantiation accepts as connection either `undefined`, a connection object like
 described above, or an class instance that extends from `Connection`: