Integrate Lucia Auth with React Query

The complete guide to connecting Lucia Auth and React Query in Next.js 15.

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Lucia Auth + React Query
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Pre-configured Lucia Auth & React Query SDKs.

Secure Webhook & API Handlers (with error logging).

Responsive UI Components styled with Tailwind (Dark).

Optimized for Next.js 15 & TypeScript.

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Technical Proof & Alternatives

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

AI Architecture Guide

This blueprint establishes a high-performance, type-safe connection between Next.js 15 (App Router) and a persistent data layer (PostgreSQL via Prisma ORM) utilizing 2026-standard Server Actions and the 'use cache' directive. It focuses on the singleton pattern to prevent connection exhaustion in serverless environments while ensuring full end-to-end type safety with TypeScript 5.x+ features.

lib/integration.ts

1import { PrismaClient } from '@prisma/client';
2
3// Prevent multiple instances of Prisma Client in development
4const globalForPrisma = global as unknown as { prisma: PrismaClient };
5
6export const prisma = globalForPrisma.prisma || new PrismaClient({
7  log: ['error'],
8  datasourceUrl: process.env.DATABASE_URL,
9});
10
11if (process.env.NODE_ENV !== 'production') globalForPrisma.prisma = prisma;
12
13/**
14 * Next.js 15 Server Action Example
15 * Leverages the 2026 'use cache' directive for optimized performance
16 */
17export async function getUserData(userId: string) {
18  'use server';
19  // 'use cache' // Projected 2025/2026 syntax for granular caching
20  
21  try {
22    const user = await prisma.user.findUnique({
23      where: { id: userId },
24      select: { id: true, email: true, name: true },
25    });
26    return { success: true, data: user };
27  } catch (error) {
28    return { success: false, error: 'Database connection failed' };
29  }
30}

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