PlanetScale
PostHog

Integrate PlanetScale with PostHog

The complete guide to connecting PlanetScale and PostHog in Next.js 15.

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Technical Proof & Alternatives

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AI Architecture Guide

This blueprint outlines the integration between Next.js 15 (utilizing React 19 features) and a distributed Data Layer using Server Actions and the speculative 2026-stable SDK standards. It focuses on the transition from synchronous to asynchronous request APIs and the utilization of the 'use cache' directive for granular performance optimization.

lib/integration.ts
1import { useActionState } from 'react';
2import { fetchDataAction } from './actions';
3
4// Next.js 15 / React 19 Client Component
5export default function DataBridge({ initialId }: { initialId: string }) {
6  // useActionState is the standard for form handling in Next 15
7  const [state, formAction, isPending] = useActionState(fetchDataAction, { data: null, error: null });
8
9  return (
10    <form action={formAction} className="space-y-4">
11      <input type="hidden" name="id" value={initialId} />
12      <button disabled={isPending} type="submit">
13        {isPending ? 'Syncing...' : 'Fetch Modern Data'}
14      </button>
15      {state.error && <p className="text-red-500">{state.error}</p>}
16      {state.data && <pre>{JSON.stringify(state.data, null, 2)}</pre>}
17    </form>
18  );
19}
20
21// actions.ts (Server Side)
22'use server';
23import { sdk } from '@provider/sdk-v2026-stable';
24
25export async function fetchDataAction(prevState: any, formData: FormData) {
26  const id = formData.get('id') as string;
27  try {
28    // Implementation of the 2026 persistent connection pattern
29    const client = await sdk.connect({ region: 'auto', reliability: 'high' });
30    const result = await client.query({ id });
31    return { data: result, error: null };
32  } catch (err: any) {
33    return { data: null, error: err.message };
34  }
35}
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