菜单
Use when implementing analytics, event tracking, or setting up dashboards. Covers privacy-first tracking, event patterns, and common analytics tools.
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基于 SOC 职业分类
Use when working with git operations including commits, branches, worktrees, and PRs. Covers the full git workflow from feature isolation to PR submission.
Complete PR submission pipeline with local sub-agent review before pushing, CI verification, and automated review integration. Always dispatches code-reviewer and code-simplifier for code changes, plus conditional reviewers (security, performance, dependency, accessibility, i18n, type-design, etc.) based on change type. Waits for CI with `gh pr checks --watch`. Integrates CodeRabbit and Greptile feedback.
GitHub CLI patterns for PR reviews, comments, and API operations. Use when working with gh api commands, especially for review threads and comments.
Use when following a written plan or task list. Checkpoint verification at each step. Triggers - execute plan, follow plan, implement plan, next step, continue, proceed.
Use for parallel branch development with workspace isolation.
REST/GraphQL API design patterns, error handling, and versioning. Use when designing APIs, handling errors, or making API architecture decisions.
| name | analytics |
| description | Use when implementing analytics, event tracking, or setting up dashboards. Covers privacy-first tracking, event patterns, and common analytics tools. |
Analytics implementation patterns covering event tracking, privacy considerations, and dashboard setup. Focus on privacy-first approaches with actionable insights.
| Provider | Privacy | Best For |
|---|---|---|
| Plausible | Privacy-first, no cookies | Simple traffic analytics |
| PostHog | Self-hostable, feature flags | Product analytics, A/B tests |
| Mixpanel | Event-focused | User journey tracking |
| Google Analytics | Free, comprehensive | Traffic + conversions |
| Vercel Analytics | Edge, Web Vitals | Next.js performance |
// app/layout.tsx
import Script from 'next/script';
export default function RootLayout({ children }) {
return (
<html>
<head>
<Script
defer
data-domain="yourdomain.com"
src="https://plausible.io/js/script.js"
/>
</head>
<body>{children}</body>
</html>
);
}
// lib/analytics.ts
export function trackEvent(name: string, props?: Record<string, string>) {
if (typeof window !== 'undefined' && window.plausible) {
window.plausible(name, { props });
}
}
// Usage
trackEvent('Signup', { plan: 'pro' });
trackEvent('Feature Used', { feature: 'export' });
// lib/posthog.ts
import posthog from 'posthog-js';
export function initPostHog() {
if (typeof window !== 'undefined') {
posthog.init(process.env.NEXT_PUBLIC_POSTHOG_KEY!, {
api_host: process.env.NEXT_PUBLIC_POSTHOG_HOST,
capture_pageview: false, // Manual control
persistence: 'localStorage',
});
}
}
export { posthog };
// app/providers.tsx
'use client';
import { useEffect } from 'react';
import { usePathname, useSearchParams } from 'next/navigation';
import { initPostHog, posthog } from '@/lib/posthog';
export function AnalyticsProvider({ children }: { children: React.ReactNode }) {
const pathname = usePathname();
const searchParams = useSearchParams();
useEffect(() => {
initPostHog();
}, []);
// Track page views
useEffect(() => {
if (pathname) {
posthog.capture('$pageview', {
$current_url: window.location.href,
});
}
}, [pathname, searchParams]);
return <>{children}</>;
}
// Track events
posthog.capture('button_clicked', {
button_name: 'signup',
page: '/pricing',
});
// Identify users
posthog.identify(userId, {
email: user.email,
plan: user.plan,
});
// Feature flags
const showNewFeature = posthog.isFeatureEnabled('new-dashboard');
// lib/analytics.ts
type EventName =
| 'page_view'
| 'signup_started'
| 'signup_completed'
| 'feature_used'
| 'checkout_started'
| 'purchase_completed'
| 'error_occurred';
interface EventProperties {
page_view: { path: string; referrer?: string };
signup_started: { method: 'email' | 'google' | 'github' };
signup_completed: { method: string; plan?: string };
feature_used: { feature: string; context?: string };
checkout_started: { plan: string; price: number };
purchase_completed: { plan: string; revenue: number };
error_occurred: { error: string; context: string };
}
export function track<E extends EventName>(
event: E,
properties: EventProperties[E]
) {
// Send to your analytics provider
posthog.capture(event, properties);
}
// Track funnel steps
track('signup_started', { method: 'email' });
// ... user completes form ...
track('signup_completed', { method: 'email', plan: 'free' });
// ... user adds payment ...
track('checkout_started', { plan: 'pro', price: 29 });
// ... payment succeeds ...
track('purchase_completed', { plan: 'pro', revenue: 29 });
// Set user properties once identified
posthog.identify(user.id, {
email: user.email,
name: user.name,
created_at: user.createdAt,
plan: user.plan,
company: user.company,
});
// Update properties when they change
posthog.people.set({
plan: 'pro',
last_login: new Date().toISOString(),
});
// components/CookieConsent.tsx
'use client';
import { useState, useEffect } from 'react';
export function CookieConsent() {
const [consent, setConsent] = useState<boolean | null>(null);
useEffect(() => {
const stored = localStorage.getItem('analytics_consent');
if (stored !== null) {
setConsent(stored === 'true');
}
}, []);
const handleConsent = (accepted: boolean) => {
localStorage.setItem('analytics_consent', String(accepted));
setConsent(accepted);
if (accepted) {
initAnalytics();
}
};
if (consent !== null) return null;
return (
<div className="fixed bottom-4 right-4 bg-white p-4 rounded-lg shadow-lg">
<p>We use analytics to improve your experience.</p>
<div className="flex gap-2 mt-2">
<button onClick={() => handleConsent(true)}>Accept</button>
<button onClick={() => handleConsent(false)}>Decline</button>
</div>
</div>
);
}
// Configure data retention
posthog.init(key, {
persistence: 'localStorage', // or 'cookie', 'memory'
persistence_name: 'ph_', // Custom prefix
property_blacklist: ['email', 'phone'], // Never track
});
// Right to deletion
async function handleDeleteRequest(userId: string) {
// Delete from PostHog
await fetch('https://app.posthog.com/api/person/', {
method: 'DELETE',
headers: { Authorization: `Bearer ${POSTHOG_API_KEY}` },
body: JSON.stringify({ distinct_id: userId }),
});
// Delete from your database
await db.user.delete({ where: { id: userId } });
}
| Metric | Description | Target |
|---|---|---|
| DAU/MAU | Daily/Monthly active users | Growth trend |
| Conversion Rate | Signups to paid | > 2-5% |
| Retention | Users returning after X days | D1 > 40%, D7 > 20% |
| ARPU | Average revenue per user | Depends on model |
| Churn | Users leaving per month | < 5% |
-- Active users by day
SELECT
toDate(timestamp) as date,
count(DISTINCT distinct_id) as users
FROM events
WHERE event = '$pageview'
AND timestamp > now() - interval 30 day
GROUP BY date
ORDER BY date
// app/layout.tsx
import { Analytics } from '@vercel/analytics/react';
import { SpeedInsights } from '@vercel/speed-insights/next';
export default function RootLayout({ children }) {
return (
<html>
<body>
{children}
<Analytics />
<SpeedInsights />
</body>
</html>
);
}
// Get variant
const variant = posthog.getFeatureFlag('pricing-page-test');
// Track exposure
posthog.capture('$feature_flag_called', {
$feature_flag: 'pricing-page-test',
$feature_flag_response: variant,
});
// Render based on variant
return variant === 'control' ? <PricingA /> : <PricingB />;
// Track errors with context
window.addEventListener('error', (event) => {
track('error_occurred', {
error: event.message,
context: event.filename + ':' + event.lineno,
});
});
// Track unhandled rejections
window.addEventListener('unhandledrejection', (event) => {
track('error_occurred', {
error: event.reason?.message || 'Unknown',
context: 'unhandled_promise',
});
});
Never:
Always:
Related skills: frontend-design, payment-processing Tools: PostHog, Plausible, Mixpanel, Google Analytics