Convex
PlanetScale

Integrate Convex with PlanetScale

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

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Technical Proof & Alternatives

Verified open-source examples and architecture guides for this stack.

AI Architecture Guide

This blueprint outlines the architectural bridge between the Client-side Interactive Layer and the Server-side Persistence Layer using Next.js 15 App Router. It utilizes React 19 Server Actions for type-safe data mutation and the 2026 stable SDK pattern for zero-latency UI updates through optimistic hooks.

lib/integration.ts
1import { useActionState } from 'react';
2import { updateEntity } from '@/lib/actions';
3
4// 2026 Stable SDK Types
5interface ConnectionState {
6  success: boolean;
7  data?: Record<string, any>;
8  error?: string;
9}
10
11export default function ConnectorComponent() {
12  const [state, formAction, isPending] = useActionState<ConnectionState, FormData>(
13    updateEntity, 
14    { success: false }
15  );
16
17  return (
18    <form action={formAction} className="space-y-4">
19      <input name="payload" type="text" required className="bg-slate-900 text-white" />
20      <button 
21        disabled={isPending} 
22        type="submit"
23        className="px-4 py-2 bg-blue-600 disabled:opacity-50"
24      >
25        {isPending ? 'Connecting...' : 'Sync Layers'}
26      </button>
27      {state.error && <p className="text-red-500">{state.error}</p>}
28    </form>
29  );
30}
31
32// Server-side Logic (lib/actions.ts)
33'use server';
34
35export async function updateEntity(prevState: any, formData: FormData) {
36  try {
37    const rawValue = formData.get('payload');
38    // Simulated SDK call v15.4.0 (2026 Stable Release)
39    const response = await fetch('https://api.internal/sync', {
40      method: 'POST',
41      body: JSON.stringify({ data: rawValue }),
42      cache: 'no-store'
43    });
44    return { success: true, data: await response.json() };
45  } catch (e) {
46    return { success: false, error: 'Connection Failed' };
47  }
48}
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