Best Practices Advanced

import { openai } from '@ai-sdk/openai';
import { streamText } from 'ai';

export async function POST(req: Request) {
  try {
    const { messages } = await req.json();

    const result = await streamText({
      model: openai('gpt-4o'),
      messages,
      maxTokens: 1000,  // Limit response length
    });

    return result.toDataStreamResponse();
  } catch (error) {
    if (error.statusCode === 429) {
      return new Response('Rate limited. Please try again later.', { status: 429 });
    }
    return new Response('An error occurred.', { status: 500 });
  }
}

import { Ratelimit } from '@upstash/ratelimit';
import { Redis } from '@upstash/redis';

const ratelimit = new Ratelimit({
  redis: Redis.fromEnv(),
  limiter: Ratelimit.slidingWindow(10, '1 m'), // 10 requests per minute
});

export async function POST(req: Request) {
  const ip = req.headers.get('x-forwarded-for') ?? 'anonymous';
  const { success } = await ratelimit.limit(ip);

  if (!success) {
    return new Response('Too many requests', { status: 429 });
  }
  // ... proceed with AI call
}