Vue Composition API Metric Collection — คู่มือฉบับสมบูรณ์ 2026

Vue Composition API Metric Collection คืออะไร — แนวคิดและหลักการสำคัญ

Vue Composition API Metric Collection เป็นหัวข้อสำคัญในวงการ Software Development ที่นักพัฒนาทุกคนควรเข้าใจ ไม่ว่าคุณจะใช้ Java หรือภาษาอื่น หลักการของ Vue Composition API Metric Collection สามารถนำไปประยุกต์ใช้ได้ทุกที่

ในยุคที่มีนักพัฒนาซอฟต์แวร์กว่า 28.7 ล้านคนทั่วโลก (Statista 2025) การเข้าใจ Vue Composition API Metric Collection จะช่วยให้คุณโดดเด่นจากคนอื่น เขียนโค้ดที่ clean, maintainable และ scalable มากขึ้น ซึ่งเป็นสิ่งที่บริษัทเทคโนโลยีชั้นนำทั่วโลกให้ความสำคัญ

บทความนี้จะอธิบาย Vue Composition API Metric Collection อย่างละเอียด พร้อมตัวอย่างโค้ดจริงใน Java ที่คุณสามารถนำไปใช้ได้ทันที รวมถึง design patterns, testing, CI/CD และ performance optimization

วิธีใช้งาน Vue Composition API Metric Collection — ตัวอย่างโค้ดจริง (Java + React)

ตัวอย่างโค้ดพื้นฐาน

# ═══════════════════════════════════════
# Vue Composition API Metric Collection — Basic Implementation
# Language: Java + React
# ═══════════════════════════════════════

# 1. Project Setup
mkdir my-vue-composition-api-metric-collection-project
cd my-vue-composition-api-metric-collection-project

# 2. Initialize project
npm init -y  # Node.js
# pip install vue-composition-api-metric-collection  # Python
# go mod init github.com/user/vue-composition-api-metric-collection  # Go

# 3. Install dependencies
npm install vue-composition-api-metric-collection express dotenv helmet cors
npm install -D typescript @types/node jest

Production-Ready Implementation

// ═══════════════════════════════════════
// Vue Composition API Metric Collection — Production Implementation
// ═══════════════════════════════════════

import { createApp, createRouter } from 'vue-composition-api-metric-collection';
import { logger, cors, rateLimit, helmet } from './middleware';
import { db } from './database';
import { cache } from './cache';

// Initialize application
const app = createApp({
  name: 'vue-composition-api-metric-collection-service',
  version: '2.0.0',
  env: process.env.NODE_ENV || 'development',
});

// Database connection
const database = db.connect({
  host: process.env.DB_HOST || 'localhost',
  port: parseInt(process.env.DB_PORT || '5432'),
  database: 'vue-composition-api-metric-collection_db',
  pool: { min: 5, max: 25 },
});

// Cache connection
const redisCache = cache.connect({
  host: process.env.REDIS_HOST || 'localhost',
  port: 6379,
  ttl: 3600, // 1 hour default
});

// Middleware stack
app.use(helmet());           // Security headers
app.use(cors({ origin: process.env.ALLOWED_ORIGINS }));
app.use(logger({ level: 'info', format: 'json' }));
app.use(rateLimit({ max: 100, window: '1m' }));

// Health check endpoint
app.get('/health', async (req, res) => {
  const dbHealth = await database.ping();
  const cacheHealth = await redisCache.ping();
  res.json({
    status: dbHealth && cacheHealth ? 'healthy' : 'degraded',
    uptime: process.uptime(),
    timestamp: new Date().toISOString(),
    checks: {
      database: dbHealth ? 'ok' : 'error',
      cache: cacheHealth ? 'ok' : 'error',
    }
  });
});

// API Routes
const router = createRouter();

router.get('/api/v1/items', async (req, res) => {
  const { page = 1, limit = 20, search } = req.query;
  const cacheKey = `items:${page}:${limit}:${search || ''}`;

  // Try cache first
  const cached = await redisCache.get(cacheKey);
  if (cached) return res.json(JSON.parse(cached));

  // Query database
  const items = await database.query(
    'SELECT * FROM items WHERE ($1::text IS NULL OR name ILIKE $1) ORDER BY created_at DESC LIMIT $2 OFFSET $3',
    [search ? `%${search}%` : null, limit, (page - 1) * limit]
  );

  const result = { data: items.rows, page, limit, total: items.rowCount };
  await redisCache.set(cacheKey, JSON.stringify(result), 300);
  res.json(result);
});

app.use(router);

// Graceful shutdown
process.on('SIGTERM', async () => {
  console.log('Shutting down gracefully...');
  await database.close();
  await redisCache.close();
  process.exit(0);
});

// Start server
const PORT = parseInt(process.env.PORT || '3000');
app.listen(PORT, () => {
  console.log(`${'vue-composition-api-metric-collection-service'} running on port ${PORT}`);
});

// ═══════════════════════════════════════
// Unit Tests — JUnit
// ═══════════════════════════════════════

describe('Vue Composition API Metric Collection Core Functions', () => {
  // Setup
  beforeEach(() => {
    jest.clearAllMocks();
  });

  it('should process data correctly', () => {
    const input = { name: 'test', value: 42 };
    const result = processData(input);
    expect(result).toBeDefined();
    expect(result.status).toBe('success');
    expect(result.processedValue).toBe(84);
  });

  it('should handle null input gracefully', () => {
    expect(() => processData(null)).toThrow('Input cannot be null');
  });

  it('should handle empty object', () => {
    const result = processData({});
    expect(result.status).toBe('error');
    expect(result.message).toContain('missing required fields');
  });

  it('should validate input types', () => {
    const input = { name: 123, value: 'not a number' };
    expect(() => processData(input)).toThrow('Invalid input types');
  });
});

// ═══════════════════════════════════════
// Integration Tests
// ═══════════════════════════════════════
describe('API Integration Tests', () => {
  it('GET /api/v1/items should return 200', async () => {
    const res = await request(app).get('/api/v1/items');
    expect(res.status).toBe(200);
    expect(res.body.data).toBeInstanceOf(Array);
  });

  it('POST /api/v1/items should create item', async () => {
    const res = await request(app)
      .post('/api/v1/items')
      .send({ name: 'Test Item', value: 100 })
      .set('Authorization', `Bearer ${token}`);
    expect(res.status).toBe(201);
    expect(res.body.id).toBeDefined();
  });

  it('should return 401 without auth', async () => {
    const res = await request(app).post('/api/v1/items').send({});
    expect(res.status).toBe(401);
  });
});

# .github/workflows/ci.yml
# ═══════════════════════════════════════
name: CI/CD Pipeline
on:
  push:
    branches: [main, develop]
  pull_request:
    branches: [main]

jobs:
  test:
    runs-on: ubuntu-latest
    services:
      postgres:
        image: postgres:16
        env:
          POSTGRES_PASSWORD: test
        ports: ['5432:5432']
      redis:
        image: redis:7
        ports: ['6379:6379']
    steps:
      - uses: actions/checkout@v4
      - uses: actions/setup-node@v4
        with:
          node-version: '20'
          cache: 'npm'
      - run: npm ci
      - run: npm run lint
      - run: npm run type-check
      - run: npm test -- --coverage
      - uses: codecov/codecov-action@v4

  build:
    needs: test
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4
      - uses: docker/build-push-action@v5
        with:
          push: ${{ github.ref == 'refs/heads/main' }}
          tags: ghcr.io/${{ github.repository }}:latest

  deploy:
    needs: build
    if: github.ref == 'refs/heads/main'
    runs-on: ubuntu-latest
    steps:
      - run: echo "Deploying to production..."
      # Add your deployment steps here