Next.js 15 Fullstack (App Router + Server Actions) · 课时

生产环境监控与错误追踪

通过结构化日志记录、借助 Sentry 进行错误追踪、性能分析和运行时间监控，保持已部署的 Next.js 应用健康运行。

生产环境监控与错误追踪 是 CoddyKit 上的免费 Next.js 15 Fullstack (App Router + Server Actions) 课时。这是第 4 节课，共 4 节。你可以在下方免费阅读本课时的完整内容 — 然后在浏览器中使用内置代码编辑器和全天候 AI 导师进行实践。这是 Next.js 15 Fullstack (App Router + Server Actions) 学习路径的一部分，你的进度在网页和 CoddyKit 应用中同步。 Next.js 15 Fullstack (App Router + Server Actions) 课程共包含 4 节课。

本课时的部分内容尚未翻译，以英文显示。

Why Monitor Production?

Once your app is live, you cannot reproduce every user's environment. Monitoring tells you when something breaks, how often, and for whom — so you fix issues before they spread.

The Three Pillars

Observability rests on:

Logs: discrete events
Metrics: numbers over time (latency, error rate)
Traces: the path of a request across services

Structured Logging

Plain text logs are hard to search. Emit structured JSON logs with consistent fields so tools can filter and aggregate them.

console.log(JSON.stringify({
  level: 'error',
  route: '/api/checkout',
  userId: 42,
  msg: 'payment failed'
}));

Installing Sentry

Sentry captures unhandled errors with stack traces and context. The wizard wires it into both server and client.

npx @sentry/wizard@latest -i nextjs

Capturing Errors

Sentry catches uncaught exceptions automatically, but you can also report handled errors with extra context.

import * as Sentry from '@sentry/nextjs';
try {
  await charge();
} catch (e) {
  Sentry.captureException(e, { tags: { feature: 'billing' } });
}

Error Boundaries with error.tsx

An error.tsx file catches render errors in a route segment and shows a fallback instead of a white screen. It is a Client Component.

'use client';
export default function Error({ error, reset }) {
  return <button onClick={reset}>Try again</button>;
}

Performance with Web Vitals

Track real user experience with Core Web Vitals — LCP, CLS, INP. Next.js exposes them through a reporting hook.

export function reportWebVitals(metric) {
  if (metric.name === 'LCP') sendToAnalytics(metric);
}

Vercel Analytics & Speed Insights

On Vercel, the Analytics and Speed Insights packages collect real-world metrics with one component each, no extra config.

import { SpeedInsights } from '@vercel/speed-insights/next';
// render <SpeedInsights /> in your root layout

Uptime Monitoring

An uptime monitor pings a health endpoint at intervals and alerts you if it fails. Expose a lightweight route for this.

// app/api/health/route.ts
export function GET() {
  return Response.json({ status: 'ok' });
}

Setting Up Alerts

Data is useless if no one looks. Configure alerts: notify the team on Slack when error rate spikes or latency crosses a threshold. Alert on symptoms users feel, not noise.

Best Practices

Stay on top of production:

Emit structured logs
Track errors with Sentry and error.tsx
Watch Core Web Vitals
Add an uptime check and meaningful alerts

Quick Check

Test your monitoring knowledge.

Recap

You learned to monitor production:

Logs, metrics, and traces form observability
Use structured logging and Sentry for error tracking
Catch render errors with error.tsx
Track Web Vitals, add a health endpoint, and set alerts

Now you find and fix problems before users complain.

常见问题解答

「生产环境监控与错误追踪」课时是免费的吗？

是的 — 「生产环境监控与错误追踪」的完整文本可在网页上免费阅读。要进行交互式练习（内置代码编辑器和全天候 AI 导师）并解锁 Next.js 15 Fullstack (App Router + Server Actions) 课程的其余内容，请升级到 CoddyKit PRO。 Next.js 15 Fullstack (App Router + Server Actions) 课程共包含 4 节课。

「生产环境监控与错误追踪」这节课中我会学到什么？

通过结构化日志记录、借助 Sentry 进行错误追踪、性能分析和运行时间监控，保持已部署的 Next.js 应用健康运行。你通过在浏览器中直接运行的动手代码来练习 Next.js 15 Fullstack (App Router + Server Actions)，全天候 AI 导师会在你学习这节课的过程中回答你的问题。

学习 Next.js 15 Fullstack (App Router + Server Actions) 需要有经验吗？

无需任何先前经验。CoddyKit 上的 Next.js 15 Fullstack (App Router + Server Actions) 课程适合初学者到高级学习者，你可以从这里开始或从头开始，按照自己的节奏学习。这是第 4 节课，共 4 节。

「生产环境监控与错误追踪」课时需要多长时间？

大多数 CoddyKit 课程大约需要 5–10 分钟。每节课都很精短且互动，所以你能稳步进步，并在网页和应用中从离开的地方继续。

我能在这节 Next.js 15 Fullstack (App Router + Server Actions) 课中编写并运行代码吗？

能。每节 Next.js 15 Fullstack (App Router + Server Actions) 课都包含内置代码编辑器，你可以在浏览器中直接编写并运行真实代码，并获得即时 AI 反馈 — 无需本地设置。

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