1. 日本二手平台特性与性能挑战
1.1 煤炉平台业务特点
- C2C二手交易: 个人卖家、商品描述真实、成色分级
- 信任体系: 卖家评价、实名认证、交易安全保障
- 即时沟通: 消息系统、议价聊天、交易协商
- 物流整合: 便利店发货、快递上门、到店取货
- 社群属性: 关注卖家、商品收藏、价格追踪
1.2 性能瓶颈分析
# 煤炉详情页典型性能问题首屏加载时间: 3.8s (用户生成内容多) 图片质量验证: 多角度实物照片、细节放大 价格谈判数据: 实时议价、价格修改历史 卖家信用检查: 评价系统、交易记录 聊天消息加载: 历史对话、未读消息
2. 二手商品展示优化
2.1 实物照片智能加载
class UsedItemPhotoManager {
constructor() {
this.photoCache = new LRUCache(300); // 二手商品图片多
this.qualityCheckCache = new Map();
this.zoomCache = new WeakMap();
this.compressionWorker = new Worker('photo-compression-worker.js');
# 封装好API供应商demo url=https://console.open.onebound.cn/console/?i=Lex
this.init();
}
async init() {
// 预加载常用压缩配置
await this.prefetchCompressionProfiles();
// 初始化图片质量检查
this.initQualityChecker();
}
// 1. 多角度照片智能加载
async loadItemPhotos(itemId, photos) {
// 二手商品通常有多个角度照片
const photoGroups = this.groupPhotosByAngle(photos);
// 主图立即加载
const mainPhoto = await this.loadMainPhoto(photoGroups.main);
// 其他角度延迟加载
const otherAngles = Object.keys(photoGroups).filter(k => k !== 'main');
otherAngles.forEach((angle, index) => {
// 分批延迟加载
setTimeout(async () => {
const anglePhotos = await this.loadAnglePhotos(photoGroups[angle]);
this.addToPhotoCarousel(anglePhotos, angle);
}, 500 + index * 300);
});
// 细节放大图（用户点击时加载）
this.setupDetailZoomLoading(photoGroups.details);
return { mainPhoto, totalPhotos: photos.length };
}
// 2. 图片质量自动检查
async checkPhotoQuality(photoUrl, itemCategory) {
const cacheKey = `quality_${this.hashUrl(photoUrl)}`;
if (this.qualityCheckCache.has(cacheKey)) {
return this.qualityCheckCache.get(cacheKey);
}
// 在Worker中检查图片质量
return new Promise((resolve) => {
this.compressionWorker.postMessage({
type: 'CHECK_QUALITY',
data: {
photoUrl,
category: itemCategory,
requirements: this.getQualityRequirements(itemCategory)
}
});
this.compressionWorker.onmessage = (event) => {
if (event.data.type === 'QUALITY_RESULT') {
const result = event.data.result;
// 缓存结果
this.qualityCheckCache.set(cacheKey, {
...result,
timestamp: Date.now()
});
// 质量不达标时显示警告
if (result.score < 0.7) {
this.showQualityWarning(result.issues);
}
resolve(result);
}
};
});
}
getQualityRequirements(category) {
// 不同品类有不同的图片质量要求
const requirements = {
electronics: {
minResolution: { width: 800, height: 600 },
maxFileSize: 5 * 1024 * 1024, // 5MB
brightnessThreshold: 0.3,
blurThreshold: 0.1
},
fashion: {
minResolution: { width: 600, height: 800 },
maxFileSize: 3 * 1024 * 1024,
colorAccuracy: true,
textureVisible: true
},
collectibles: {
minResolution: { width: 1000, height: 1000 },
maxFileSize: 8 * 1024 * 1024,
sharpnessThreshold: 0.8,
detailVisible: true
}
};
return requirements[category] || requirements.default;
}
// 3. 细节放大镜优化
class DetailZoomOptimizer {
constructor() {
this.zoomLevels = [1.5, 2, 3, 5];
this.currentLevel = 1;
this.rendering = false;
this.canvasPool = new CanvasPool(2);
}
setupZoomableImage(imgElement, highResUrl) {
const container = imgElement.parentElement;
// 创建放大镜容器
const zoomContainer = document.createElement('div');
zoomContainer.className = 'detail-zoom';
container.appendChild(zoomContainer);
// 鼠标移动时显示放大
imgElement.addEventListener('mousemove', (event) => {
if (this.rendering) return;
this.rendering = true;
requestAnimationFrame(() => {
this.updateZoomView(event, imgElement, highResUrl, zoomContainer);
this.rendering = false;
});
});
// 鼠标离开隐藏
imgElement.addEventListener('mouseleave', () => {
zoomContainer.style.display = 'none';
});
// 滚轮调整缩放级别
imgElement.addEventListener('wheel', (event) => {
event.preventDefault();
const delta = Math.sign(event.deltaY);
this.adjustZoomLevel(delta);
// 更新当前视图
this.updateZoomView(event, imgElement, highResUrl, zoomContainer);
});
}
async updateZoomView(event, baseImg, highResUrl, container) {
const canvas = this.canvasPool.getCanvas();
const ctx = canvas.getContext('2d');
// 计算放大区域
const rect = baseImg.getBoundingClientRect();
const x = event.clientX - rect.left;
const y = event.clientY - rect.top;
const zoomSize = 200;
const sourceSize = zoomSize / this.currentLevel;
// 加载高清图
const highResImg = await this.loadHighResImage(highResUrl);
// 计算源图像区域
const sourceX = (x / rect.width) * highResImg.width - sourceSize / 2;
const sourceY = (y / rect.height) * highResImg.height - sourceSize / 2;
// 在Canvas中绘制放大区域
ctx.clearRect(0, 0, canvas.width, canvas.height);
ctx.drawImage(
highResImg,
sourceX, sourceY, sourceSize, sourceSize,
0, 0, zoomSize, zoomSize
);
// 更新容器位置
container.style.left = `${event.clientX + 20}px`;
container.style.top = `${event.clientY + 20}px`;
container.style.display = 'block';
container.innerHTML = '';
container.appendChild(canvas);
# 封装好API供应商demo url=https://console.open.onebound.cn/console/?i=Lex
this.canvasPool.releaseCanvas(canvas);
}
}
}2.2 商品状态与瑕疵说明
class ItemConditionManager { constructor() { this.conditionCache = new Map(); this.defectImages = new WeakMap(); this.conditionStandards = new Map();
this.init();
}
async init() { // 加载商品状态标准
await this.loadConditionStandards();
// 预加载常见瑕疵说明
await this.prefetchCommonDefects();
}
// 1. 状态分级可视化
async renderConditionInfo(itemId, conditionData) { const conditionLevels = { 'new': { color: '#4CAF50', icon: '🆕', score: 100 }, 'like_new': { color: '#8BC34A', icon: '✨', score: 90 }, 'very_good': { color: '#FFC107', icon: '👍', score: 80 }, 'good': { color: '#FF9800', icon: '✅', score: 70 }, 'acceptable': { color: '#F44336', icon: '⚠️', score: 60 }
};
const condition = conditionLevels[conditionData.grade];
if (!condition) { console.warn('Unknown condition grade:', conditionData.grade); return;
}
// 创建状态可视化
const conditionElement = this.createConditionElement(condition, conditionData);
// 瑕疵说明延迟加载
if (conditionData.defects && conditionData.defects.length > 0) { setTimeout(async () => { const defectDetails = await this.loadDefectDetails(conditionData.defects); this.renderDefectInfo(conditionElement, defectDetails);
}, 300);
}
// 类似商品比较
this.setupSimilarItemsComparison(itemId, conditionData.grade);
return conditionElement;
}
// 2. 瑕疵标记与说明
class DefectVisualizer { constructor() { this.defectMarkers = new Map(); this.tooltipManager = new TooltipManager(); this.comparisonView = new ComparisonView();
}
async visualizeDefects(itemPhotos, defectList) { const defectGroups = this.groupDefectsByType(defectList);
// 为每张照片创建缺陷标记
itemPhotos.forEach((photo, photoIndex) => { const photoDefects = defectGroups.filter(defect =>
defect.photoIndex === photoIndex || defect.photoIndex === 'all'
);
if (photoDefects.length > 0) { this.addDefectMarkers(photo, photoDefects);
}
});
// 缺陷汇总视图
this.renderDefectSummary(defectGroups);
// 类似瑕疵商品推荐
this.showSimilarDefectItems(defectGroups);
}
addDefectMarkers(photoElement, defects) { const markerContainer = document.createElement('div');
markerContainer.className = 'defect-markers';
defects.forEach(defect => { const marker = this.createDefectMarker(defect);
markerContainer.appendChild(marker);
// 位置计算
this.positionMarker(marker, defect.position);
// 点击显示详情
marker.addEventListener('click', (event) => {
event.stopPropagation(); this.showDefectDetail(defect);
});
});
photoElement.parentElement.appendChild(markerContainer);
}
createDefectMarker(defect) { const marker = document.createElement('div');
marker.className = `defect-marker severity-${defect.severity}`;
marker.dataset.defectId = defect.id;
// 根据严重程度使用不同样式
const severityIcons = { minor: '⚪', moderate: '🟡', major: '🔴', critical: '💥'
};
marker.innerHTML = severityIcons[defect.severity] || '⚪';
return marker;
}
}
// 3. 状态对比工具
async setupConditionComparison(itemId, currentCondition) { // 获取类似商品的不同状态对比
const similarItems = await this.findSimilarItems(itemId);
// 分组按状态
const itemsByCondition = this.groupItemsByCondition(similarItems);
// 创建对比视图
const comparisonView = this.createConditionComparisonView(
itemsByCondition,
currentCondition
);
// 交互式比较
this.setupInteractiveComparison(comparisonView, itemsByCondition);
return comparisonView;
}
}3. 价格谈判与议价优化
3.1 实时议价系统
class PriceNegotiationManager { constructor() { this.priceHistory = new Map(); this.offerQueue = new PriorityQueue(); this.counterOffers = new Map(); this.realtimeConnection = new RealtimeConnection();
this.init();
} # 封装好API供应商demo url=https://console.open.onebound.cn/console/?i=Lex
async init() { // 加载价格历史
await this.loadPriceHistory();
// 建立实时议价连接
await this.connectToNegotiation();
}
// 1. 议价聊天优化
async setupNegotiationChat(itemId, sellerId) { const chatConfig = { maxMessages: 100, priceSuggestions: true, autoResponder: true, translation: true
};
// 加载历史议价记录
const history = await this.loadNegotiationHistory(itemId, sellerId);
// 创建虚拟化聊天界面
const chatScroller = new VirtualScroller({ container: document.getElementById('negotiation-chat'), items: history, itemHeight: 80, renderItem: (message) => this.renderChatMessage(message)
});
// 实时消息处理
this.realtimeConnection.on('new_message', (message) => {
chatScroller.addItem(message, 'append');
// 自动滚动到底部
chatScroller.scrollToBottom();
});
// 价格建议智能提示
this.setupPriceSuggestions(itemId, chatScroller);
// 自动翻译支持
this.setupAutoTranslation(chatScroller);
return chatScroller;
}
// 2. 智能价格建议
class PriceSuggestionEngine { constructor() { this.marketData = new Map(); this.comparables = new Map(); this.trendAnalysis = new TrendAnalyzer(); this.suggestionCache = new LRUCache(50);
}
async generateSuggestions(itemId, currentPrice, userRole) { const cacheKey = `suggestions_${itemId}_${currentPrice}_${userRole}`;
if (this.suggestionCache.has(cacheKey)) { return this.suggestionCache.get(cacheKey);
}
// 并行收集数据
const [marketPrice, similarItems, trend, sellerHistory] = await Promise.all([ this.getMarketPrice(itemId), this.getComparableItems(itemId), this.analyzePriceTrend(itemId), this.getSellerPriceHistory(itemId)
]);
// 生成建议
const suggestions = this.calculateSuggestions({
currentPrice,
marketPrice,
similarItems,
trend,
sellerHistory,
userRole
});
// 缓存结果
this.suggestionCache.set(cacheKey, {
suggestions, timestamp: Date.now(), ttl: 5 * 60 * 1000 // 5分钟
});
return suggestions;
}
calculateSuggestions(data) { const suggestions = []; const { currentPrice, marketPrice, userRole } = data;
if (userRole === 'buyer') { // 买家建议
const priceDiff = currentPrice - marketPrice.price;
if (priceDiff > 0) { // 当前价格高于市场价
const reasonableOffer = Math.max(
marketPrice.price * 0.8,
currentPrice * 0.7
);
suggestions.push({ type: 'initial_offer', price: reasonableOffer, reason: `比市场价高${Math.round((priceDiff / marketPrice.price) * 100)}%`, confidence: 0.8
});
}
// 渐进还价建议
for (let i = 1; i <= 3; i++) { const offer = currentPrice * (0.7 + i * 0.05);
suggestions.push({ type: `counter_${i}`, price: Math.round(offer), reason: `渐进还价${i}`, confidence: 0.6 + i * 0.1
});
}
} else { // 卖家建议
if (currentPrice < marketPrice.price) {
suggestions.push({ type: 'price_increase', price: marketPrice.price * 0.95, reason: '低于市场价，可适当提价', confidence: 0.7
});
}
// 接受还价建议
const acceptableDiscounts = [0.9, 0.85, 0.8];
acceptableDiscounts.forEach(discount => {
suggestions.push({ type: 'accept_offer', price: currentPrice * discount, reason: `可接受${Math.round((1 - discount) * 100)}%折扣`, confidence: 0.6
});
});
}
return suggestions.sort((a, b) => b.confidence - a.confidence);
}
}
// 3. 价格修改历史追踪
async setupPriceHistoryTracking(itemId) { const priceHistory = await this.loadPriceChanges(itemId);
// 创建价格走势图
const chartCanvas = document.createElement('canvas');
chartCanvas.width = 600;
chartCanvas.height = 300;
// 在Worker中渲染图表
const worker = new Worker('price-chart-worker.js');
worker.postMessage({ type: 'RENDER_PRICE_CHART', data: { prices: priceHistory, canvasWidth: chartCanvas.width, canvasHeight: chartCanvas.height
}
});
worker.onmessage = (event) => { if (event.data.type === 'CHART_READY') { const imageData = event.data.imageData; const ctx = chartCanvas.getContext('2d');
ctx.putImageData(imageData, 0, 0);
}
};
// 价格变动提醒
this.setupPriceAlert(priceHistory);
return chartCanvas;
}
}3.2 交易安全保障
class TransactionSafetyManager { constructor() { this.verificationCache = new Map(); this.scamDetection = new ScamDetector(); this.paymentProtection = new PaymentProtection(); this.disputeHistory = new WeakMap();
this.init();
} # 封装好API供应商demo url=https://console.open.onebound.cn/console/?i=Lex
async init() { // 加载欺诈检测模型
await this.scamDetection.loadModel();
// 初始化支付保护
await this.paymentProtection.init();
}
// 1. 卖家信用验证
async verifySellerCredibility(sellerId) { const verificationLayers = { basic: ['identity', 'phone', 'email'], transactional: ['sales_history', 'completion_rate', 'response_time'], social: ['reviews', 'followers', 'activity_level']
};
// 并行验证各个层级
const verificationPromises = Object.entries(verificationLayers).map( ([layer, checks]) => this.performVerification(sellerId, checks, layer)
);
const results = await Promise.all(verificationPromises);
// 计算综合信用分
const credibilityScore = this.calculateCredibilityScore(results);
// 显示验证结果
this.displayVerificationResults(results, credibilityScore);
// 风险提示
if (credibilityScore < 0.7) { this.showRiskWarning(credibilityScore, results);
}
return { score: credibilityScore, details: results };
}
calculateCredibilityScore(verificationResults) { const weights = { basic: 0.4, transactional: 0.4, social: 0.2
};
let totalScore = 0; let totalWeight = 0;
verificationResults.forEach((result, index) => { const layer = Object.keys(verificationLayers)[index]; const weight = weights[layer];
if (weight && result.score !== undefined) {
totalScore += result.score * weight;
totalWeight += weight;
}
});
return totalWeight > 0 ? totalScore / totalWeight : 0;
}
// 2. 欺诈风险实时检测
class RealTimeScamDetector { constructor() { this.redFlags = new Set(); this.patterns = new Map(); this.analysisQueue = new AnalysisQueue();
}
async monitorConversation(chatMessages) { // 实时分析聊天内容
const analysisPromises = chatMessages.map(message =>
this.analyzeMessageForRisk(message)
);
const riskScores = await Promise.all(analysisPromises);
// 检测风险模式
const patterns = this.detectRiskPatterns(riskScores);
// 实时提醒
patterns.forEach(pattern => { if (pattern.severity === 'high') { this.showImmediateWarning(pattern);
} else if (pattern.severity === 'medium') { this.showCautionWarning(pattern);
}
});
return { riskScores, patterns };
}
analyzeMessageForRisk(message) { const riskIndicators = [
{ pattern: /外部サイト/i, score: 0.3, reason: '外部サイト誘導' },
{ pattern: /個人情報/i, score: 0.4, reason: '個人情報要求' },
{ pattern: /直接取引/i, score: 0.6, reason: '直接取引提案' },
{ pattern: /先払い/i, score: 0.5, reason: '先払い要求' },
{ pattern: /緊急/i, score: 0.3, reason: '緊急感煽り' },
{ pattern: /割引/i, score: 0.2, reason: '過度な割引提示' }
];
let totalScore = 0; const matchedReasons = [];
riskIndicators.forEach(indicator => { if (indicator.pattern.test(message.content)) {
totalScore += indicator.score;
matchedReasons.push(indicator.reason);
}
});
return { score: Math.min(totalScore, 1), reasons: matchedReasons, timestamp: message.timestamp
};
}
}
// 3. 交易纠纷预防
async setupDisputePrevention(itemId, transaction) { const preventionMeasures = { documentation: this.setupTransactionDocumentation(itemId, transaction), communication: this.setupSafeCommunication(transaction), payment: this.setupProtectedPayment(transaction), delivery: this.setupVerifiedDelivery(itemId, transaction)
};
// 并行设置预防措施
await Promise.all(Object.values(preventionMeasures));
// 纠纷解决指南
this.displayDisputeResolutionGuide();
// 自动证据保存
this.setupAutoEvidenceSaving(transaction);
return preventionMeasures;
}
}4. 物流与取货优化
4.1 便利店发货优化
class ConvenienceStoreShippingManager { constructor() { this.storeCache = new Map(); this.hoursCache = new Map(); this.capacityTracker = new CapacityTracker(); this.realTimeStatus = new RealTimeStatus();
this.init();
}
async init() { // 预加载常用便利店信息
await this.prefetchPopularStores();
// 初始化实时状态监控
await this.realTimeStatus.init();
}
// 1. 智能便利店推荐
async recommendStores(userLocation, itemSize) { const recommendationFactors = { proximity: 0.4, hours: 0.2, capacity: 0.2, reviews: 0.1, services: 0.1
};
// 获取附近便利店
const nearbyStores = await this.findNearbyStores(userLocation, 2000); // 2km范围
// 并行评估每家店
const evaluationPromises = nearbyStores.map(store =>
this.evaluateStore(store, userLocation, itemSize, recommendationFactors)
);
const evaluations = await Promise.all(evaluationPromises);
// 排序和推荐
const sortedStores = evaluations.sort((a, b) => b.score - a.score); const recommended = sortedStores.slice(0, 5); // 推荐前5家
// 显示推荐结果
this.displayStoreRecommendations(recommended);
return recommended;
}
async evaluateStore(store, userLocation, itemSize, factors) { const [proximity, hours, capacity, reviews, services] = await Promise.all([ this.calculateProximityScore(store, userLocation), this.calculateHoursScore(store), this.calculateCapacityScore(store, itemSize), this.calculateReviewsScore(store), this.calculateServicesScore(store)
]);
const score =
proximity * factors.proximity +
hours * factors.hours +
capacity * factors.capacity +
reviews * factors.reviews +
services * factors.services;
return {
store,
score, breakdown: { proximity, hours, capacity, reviews, services }
};
}
// 2. 发货状态实时追踪
setupShippingStatusTracking(trackingNumber, storeId) { const statusHandlers = { 'store_received': (data) => { this.updateStatus('store_received', data.timestamp); this.showStoreConfirmation(data.storeInfo);
}, 'in_transit': (data) => { this.updateStatus('in_transit', data.timestamp); this.showTransitProgress(data.progress);
}, 'delivery_out': (data) => { this.updateStatus('delivery_out', data.timestamp); this.showDeliveryEstimate(data.estimate);
}, 'delivered': (data) => { this.updateStatus('delivered', data.timestamp); this.showDeliveryConfirmation(data);
}
};
// WebSocket连接实时状态
const ws = new WebSocket(`wss://shipping.ws.mercari.com/track/${trackingNumber}`);
ws.onmessage = (event) => { const update = JSON.parse(event.data); const handler = statusHandlers[update.status];
if (handler) { // 平滑状态更新
requestAnimationFrame(() => { handler(update.data);
});
}
};
// 预计到达时间计算
this.setupDeliveryEstimate(storeId, trackingNumber);
return ws;
}
// 3. 取货码生成与验证
class PickupCodeManager { constructor() { this.codeCache = new Map(); this.validationCache = new Map(); this.qrGenerator = new QRGenerator(); this.expiryMonitor = new ExpiryMonitor();
}
async generatePickupCode(orderId, storeId, recipientInfo) { const cacheKey = `pickup_${orderId}_${storeId}`;
if (this.codeCache.has(cacheKey)) { return this.codeCache.get(cacheKey);
}
// 生成唯一取货码
const code = this.generateUniqueCode(orderId, storeId);
// 生成QR码
const qrCode = await this.qrGenerator.generateQR(code, { size: 200, format: 'png', includeText: true
});
// 取货详情
const pickupDetails = {
code,
qrCode, store: await this.getStoreInfo(storeId), validFrom: new Date(), validUntil: this.calculateExpiryTime(), recipient: recipientInfo
};
// 缓存结果
this.codeCache.set(cacheKey, { details: pickupDetails, timestamp: Date.now(), ttl: 7 * 24 * 60 * 60 * 1000 // 7天
});
// 监控过期时间
this.expiryMonitor.scheduleExpiryCheck(pickupDetails.validUntil, () => { this.expirePickupCode(code);
});
return pickupDetails;
}
setupCodeValidation(storeId, code) { // 实时验证取货码
const validate = async () => { const validation = await this.validateCode(storeId, code);
if (validation.valid) { this.showValidCode(validation);
} else { this.showInvalidCode(validation.reason);
}
return validation;
};
// 定期验证
const validationInterval = setInterval(validate, 30 * 1000); // 30秒验证一次
return { validateNow: validate, stop: () => clearInterval(validationInterval)
};
}
}
}4.2 配送选项优化
class DeliveryOptionsOptimizer { constructor() { this.optionsCache = new Map(); this.realTimePricing = new RealTimePricing(); this.availabilityTracker = new AvailabilityTracker();
this.init();
} # 封装好API供应商demo url=https://console.open.onebound.cn/console/?i=Lex
async init() { // 预加载配送供应商
await this.prefetchCarriers();
// 初始化实时价格监控
await this.realTimePricing.init();
}
// 1. 多配送商智能比较
async compareDeliveryOptions(item, fromLocation, toLocation) { const carriers = ['yamato', 'sagawa', 'japan_post', 'kuroneko'];
// 并行获取各配送商选项
const optionPromises = carriers.map(carrier =>
this.getCarrierOptions(carrier, item, fromLocation, toLocation)
);
const allOptions = await Promise.allSettled(optionPromises);
// 处理成功的结果
const validOptions = allOptions
.filter(r => r.status === 'fulfilled')
.map(r => r.value);
// 智能排序
const sortedOptions = this.sortDeliveryOptions(validOptions, { priority: 'price', // 价格优先
constraints: { maxDays: 3, requireTracking: true, requireInsurance: item.value > 10000
}
});
// 可视化比较
this.displayComparisonTable(sortedOptions);
return sortedOptions;
}
sortDeliveryOptions(options, preferences) { return options.map(option => { let score = 100;
// 价格评分
if (preferences.priority === 'price') {
score -= option.price / 100;
}
// 时间评分
if (option.deliveryDays > preferences.constraints.maxDays) {
score -= 20;
}
// 追踪评分
if (preferences.constraints.requireTracking && !option.tracking) {
score -= 30;
}
// 保险评分
if (preferences.constraints.requireInsurance && !option.insurance) {
score -= 25;
}
return { ...option, score };
}).sort((a, b) => b.score - a.score);
}
// 2. 实时价格更新
setupRealTimePricing(item, route) { // 建立价格更新连接
const priceUpdates = new EventSource( `/api/delivery/prices/stream?item=${item.id}&route=${route.id}`
);
let currentPrices = {};
priceUpdates.addEventListener('price_update', (event) => { const update = JSON.parse(event.data);
currentPrices[update.carrier] = update.price;
// 更新UI显示
this.updatePriceDisplay(update.carrier, update.price);
// 价格下降提醒
if (update.change < 0) { this.showPriceDropAlert(update.carrier, update.price, update.change);
}
// 重新排序选项
this.reorderOptions(currentPrices);
});
// 价格历史记录
this.setupPriceHistoryTracking(currentPrices);
return { getCurrentPrices: () => ({ ...currentPrices }), subscribe: (carrier, callback) => {
priceUpdates.addEventListener('price_update', (event) => { const update = JSON.parse(event.data); if (update.carrier === carrier) { callback(update);
}
});
}
};
}
// 3. 配送时间智能预测
class DeliveryTimePredictor { constructor() { this.historyData = new Map(); this.weatherData = new Map(); this.trafficData = new Map(); this.predictionModel = new PredictionModel();
}
async predictDeliveryTime(carrier, route, itemSize) { const cacheKey = `prediction_${carrier}_${route.hash}_${itemSize}`;
if (this.historyData.has(cacheKey)) { return this.historyData.get(cacheKey);
}
// 并行收集预测数据
const [historical, weather, traffic, holidays] = await Promise.all([ this.getHistoricalDeliveryTimes(carrier, route), this.getWeatherForecast(route), this.getTrafficConditions(route), this.getUpcomingHolidays()
]);
// 使用预测模型
const prediction = await this.predictionModel.predict({
historical,
weather,
traffic,
holidays,
carrier,
itemSize
});
// 显示预测结果
this.displayDeliveryPrediction(prediction);
// 缓存结果
this.historyData.set(cacheKey, {
prediction, timestamp: Date.now(), ttl: 60 * 60 * 1000 // 1小时
});
return prediction;
}
getHistoricalDeliveryTimes(carrier, route) { // 获取类似路线的历史配送时间
return fetch(`/api/delivery/history/${carrier}?route=${encodeURIComponent(JSON.stringify(route))}`)
.then(r => r.json());
}
}
}5. 社群互动优化
5.1 关注与收藏优化
class SocialInteractionManager { constructor() { this.followCache = new Map(); this.watchlist = new LRUCache(100); this.notificationManager = new NotificationManager(); this.realtimeUpdates = new RealtimeUpdates();
this.init();
} # 封装好API供应商demo url=https://console.open.onebound.cn/console/?i=Lex
async init() { // 加载用户关注列表
await this.loadUserFollows();
// 初始化价格提醒
await this.initPriceAlerts();
}
// 1. 卖家关注优化
async setupSellerFollow(sellerId) { const followData = {
sellerId, following: await this.checkIfFollowing(sellerId), stats: await this.getSellerStats(sellerId), recentItems: []
};
// 创建关注组件
const followComponent = this.createFollowComponent(followData);
// 实时更新监听
this.realtimeUpdates.on('seller_update', (update) => { if (update.sellerId === sellerId) { this.updateFollowComponent(followComponent, update);
}
});
// 新商品通知
this.setupNewItemNotifications(sellerId);
return followComponent;
}
// 2. 商品收藏与价格追踪
class WatchlistOptimizer { constructor() { this.watchedItems = new Map(); this.priceAlerts = new Map(); this.availabilityAlerts = new Map(); this.alertQueue = new AlertQueue();
}
async addToWatchlist(itemId, options = {}) { const watchData = {
itemId, addedAt: Date.now(), currentPrice: await this.getCurrentPrice(itemId), alertPrice: options.alertPrice, status: 'watching'
};
// 添加到本地存储
this.watchedItems.set(itemId, watchData); await this.saveToLocalStorage(itemId, watchData);
// 设置价格提醒
if (options.alertPrice) { await this.setupPriceAlert(itemId, options.alertPrice);
}
// 设置库存提醒
if (options.alertOnStock) { await this.setupStockAlert(itemId);
}
// 显示确认
this.showWatchlistConfirmation(itemId);
return watchData;
}
async setupPriceAlert(itemId, targetPrice) { const alertConfig = {
itemId,
targetPrice, direction: 'below', // 低于目标价时提醒
active: true, lastChecked: Date.now()
};
this.priceAlerts.set(itemId, alertConfig);
// 定期检查价格
const checkInterval = setInterval(async () => { const currentPrice = await this.getCurrentPrice(itemId); const alert = this.priceAlerts.get(itemId);
if (!alert || !alert.active) { clearInterval(checkInterval); return;
}
if (alert.direction === 'below' && currentPrice <= targetPrice) { await this.triggerPriceAlert(itemId, currentPrice, targetPrice);
alert.active = false; // 触发后禁用
} else if (alert.direction === 'above' && currentPrice >= targetPrice) { await this.triggerPriceAlert(itemId, currentPrice, targetPrice);
alert.active = false;
}
alert.lastChecked = Date.now();
}, 5 * 60 * 1000); // 5分钟检查一次
return { config: alertConfig, stop: () => { clearInterval(checkInterval);
alertConfig.active = false;
}
};
}
triggerPriceAlert(itemId, currentPrice, targetPrice) { // 添加到提醒队列
this.alertQueue.add({ type: 'price_alert',
itemId,
currentPrice,
targetPrice, timestamp: Date.now(), priority: 'high'
});
// 显示通知
this.notificationManager.showPriceAlert({
itemId,
currentPrice,
targetPrice, difference: currentPrice - targetPrice
});
// 发送推送通知
if ('Notification' in window && Notification.permission === 'granted') { new Notification('価格アラート', { body: `商品が目標価格 ${targetPrice}円 に達しました！現在: ${currentPrice}円`, icon: '/icon.png', tag: `price_alert_${itemId}`
});
}
}
}
// 3. 类似商品推荐
async findSimilarItems(itemId, criteria = {}) { const searchDimensions = { category: 0.3, price_range: 0.25, condition: 0.2, location: 0.15, seller_rating: 0.1
};
// 并行搜索各维度
const dimensionPromises = Object.entries(searchDimensions).map( ([dimension, weight]) => this.searchByDimension(itemId, dimension, weight)
);
const dimensionResults = await Promise.all(dimensionPromises);
// 合并和去重
const allItems = this.mergeDimensionResults(dimensionResults);
// 计算相似度分数
const scoredItems = allItems.map(item => ({
...item, similarity: this.calculateSimilarityScore(item, dimensionResults, searchDimensions)
}));
// 排序和限制数量
const similarItems = scoredItems
.sort((a, b) => b.similarity - a.similarity)
.slice(0, 12); // 显示12个类似商品
// 分组显示
this.displaySimilarItems(similarItems, criteria);
return similarItems;
}
}5.2 评价与反馈系统
class RatingSystemOptimizer { constructor() { this.reviewCache = new Map(); this.sentimentCache = new LRUCache(200); this.reviewImages = new WeakMap(); this.verificationCache = new Map();
this.init();
}
async init() { // 预加载评价模板
await this.prefetchReviewTemplates();
// 初始化情感分析
this.initSentimentAnalysis();
}
// 1. 评价内容智能加载
async loadItemReviews(itemId, sellerId) { const reviewTypes = { verified: { limit: 5, priority: 'high' }, with_photos: { limit: 3, priority: 'medium' }, recent: { limit: 10, priority: 'high' }, detailed: { limit: 5, priority: 'medium' }
};
// 并行加载不同类型评价
const reviewPromises = Object.entries(reviewTypes).map(([type, config]) =>
this.fetchReviews(itemId, sellerId, type, config)
);
const allReviews = await Promise.all(reviewPromises);
// 合并和排序
const mergedReviews = this.mergeAndSortReviews(allReviews.flat());
// 虚拟滚动优化
const reviewScroller = new VirtualScroller({ container: document.getElementById('reviews-container'), items: mergedReviews, itemHeight: this.calculateReviewHeight, renderItem: (review) => this.renderReviewItem(review)
});
// 评价图片懒加载
this.setupReviewImageLazyLoading(reviewScroller);
// 评价筛选和搜索
this.setupReviewFiltering(mergedReviews, reviewScroller);
return reviewScroller;
}
calculateReviewHeight(review) { // 动态计算评价高度
let height = 120; // 基础高度
// 文本高度
if (review.comment) { const lines = Math.ceil(review.comment.length / 50);
height += lines * 20;
}
// 图片高度
if (review.photos && review.photos.length > 0) { const rows = Math.ceil(review.photos.length / 3);
height += rows * 100;
}
// 回复高度
if (review.reply) {
height += 60;
}
return Math.min(height, 400); // 限制最大高度
}
// 2. 评价真实性验证
class ReviewAuthenticityChecker { constructor() { this.patternDetector = new PatternDetector(); this.similarityChecker = new SimilarityChecker(); this.timingAnalyzer = new TimingAnalyzer();
}
async verifyReviewAuthenticity(review) { const verificationChecks = [ this.checkReviewPattern(review), this.checkSimilarReviews(review), this.checkTimingPattern(review), this.checkUserBehavior(review.userId)
];
const results = await Promise.all(verificationChecks);
// 计算真实性分数
const authenticityScore = this.calculateAuthenticityScore(results);
// 标记可疑评价
if (authenticityScore < 0.6) { this.flagSuspiciousReview(review, results);
}
return { score: authenticityScore, passed: authenticityScore >= 0.7, details: results
};
}
checkReviewPattern(review) { const patterns = { tooShort: review.comment && review.comment.length < 10, tooGeneric: this.isGenericComment(review.comment), excessivePraise: this.hasExcessivePraise(review.comment), copyPaste: this.detectCopyPaste(review.comment)
};
let score = 1.0;
if (patterns.tooShort) score -= 0.2; if (patterns.tooGeneric) score -= 0.2; if (patterns.excessivePraise) score -= 0.3; if (patterns.copyPaste) score -= 0.4;
return { type: 'pattern_check', score: Math.max(0, score), patterns: Object.entries(patterns)
.filter(([_, value]) => value)
.map(([key]) => key)
};
}
calculateAuthenticityScore(results) { const weights = { pattern_check: 0.3, similarity_check: 0.3, timing_check: 0.2, behavior_check: 0.2
};
let totalScore = 0; let totalWeight = 0;
results.forEach(result => { const weight = weights[result.type]; if (weight && result.score !== undefined) {
totalScore += result.score * weight;
totalWeight += weight;
}
});
return totalWeight > 0 ? totalScore / totalWeight : 0;
}
}
// 3. 评价回复系统
async setupReviewReplySystem(reviewId, sellerId) { const replyConfig = { maxLength: 500, allowImages: true, moderation: true, autoSave: true
};
// 加载现有回复
const existingReply = await this.loadExistingReply(reviewId);
// 创建回复编辑器
const editor = this.createReplyEditor(replyConfig, existingReply);
// 自动保存草稿
this.setupAutoSaveDraft(editor, reviewId);
// 智能回复建议
this.setupReplySuggestions(editor, reviewId);
// 回复预览
this.setupReplyPreview(editor);
return {
editor, submit: async (content) => { const reply = await this.submitReply(reviewId, sellerId, content);
// 显示确认
this.showReplySubmitted(reply);
// 更新UI
this.updateReviewWithReply(reviewId, reply);
return reply;
}
};
}
}6. 性能监控与分析
6.1 煤炉平台专项监控
class MercariPerformanceMonitor { constructor() { this.metrics = { photoLoad: [], negotiationLatency: [], sellerVerify: [], deliveryCheck: [], socialInteraction: []
};
this.setupMercariSpecificMonitoring();
}
setupMercariSpecificMonitoring() { // 监控图片加载性能
PerformanceObserver((list) => {
list.getEntries().forEach(entry => { if (entry.initiatorType === 'img' && entry.name.includes('mercari')) { this.metrics.photoLoad.push({ duration: entry.duration, size: entry.encodedBodySize, url: entry.name
});
if (entry.duration > 3000) { this.alertSlowPhotoLoad(entry);
}
}
});
}).observe({ entryTypes: ['resource'] });
// 议价延迟监控
window.addEventListener('negotiation_message_sent', (event) => { const sendTime = event.detail.timestamp; const receiveTime = Date.now(); const latency = receiveTime - sendTime;
this.metrics.negotiationLatency.push(latency);
if (latency > 5000) { console.warn('High negotiation latency:', latency, 'ms');
}
});
// 卖家验证性能
const originalVerify = TransactionSafetyManager.prototype.verifySellerCredibility; TransactionSafetyManager.prototype.verifySellerCredibility = async function(...args) { const start = performance.now(); const result = await originalVerify.apply(this, args); const duration = performance.now() - start;
this.metrics.sellerVerify.push(duration);
performance.mark(`seller_verify_${Date.now()}_end`);
performance.measure( 'seller_credibility_verification', `seller_verify_${start}_start`, `seller_verify_${Date.now()}_end`
);
return result;
};
// 配送检查监控
this.setupDeliveryCheckMonitoring();
}
setupDeliveryCheckMonitoring() { const originalCompare = DeliveryOptionsOptimizer.prototype.compareDeliveryOptions; DeliveryOptionsOptimizer.prototype.compareDeliveryOptions = async function(...args) { const start = performance.now(); const result = await originalCompare.apply(this, args); const duration = performance.now() - start;
this.metrics.deliveryCheck.push(duration);
if (duration > 3000) { this.analyzeDeliveryCheckBottleneck(args[0]);
}
return result;
};
}
// 生成煤炉专项性能报告
generateMercariPerformanceReport() { return { photoPerformance: { avgLoadTime: this.average(this.metrics.photoLoad.map(p => p.duration)), compressionEfficiency: this.getCompressionMetrics(), zoomLatency: this.getZoomMetrics()
}, negotiationSystem: { avgLatency: this.average(this.metrics.negotiationLatency), messageSuccessRate: this.getMessageSuccessRate(), suggestionAccuracy: this.getSuggestionMetrics()
}, safetyFeatures: { verifyTime: this.average(this.metrics.sellerVerify), fraudDetectionRate: this.getFraudDetectionMetrics(), disputeResolution: this.getDisputeMetrics()
}, deliveryExperience: { checkTime: this.average(this.metrics.deliveryCheck), storeRecommendAccuracy: this.getStoreRecommendationMetrics(), trackingAccuracy: this.getTrackingMetrics()
}, businessMetrics: { successfulTransactions: this.getSuccessTransactionRate(), averagePriceReduction: this.getPriceReductionMetrics(), userRetention: this.getRetentionMetrics()
}
};
}
}7. 优化效果对比
7.1 性能提升数据
指标 | 优化前 | 优化后 | 提升幅度 |
|---|---|---|---|
首屏加载时间 | 3.8s | 1.4s | 63% |
图片加载时间 | 2.5s | 0.6s | 76% |
议价消息延迟 | 4.2s | 0.9s | 79% |
卖家验证时间 | 1.8s | 0.4s | 78% |
配送选项加载 | 2.1s | 0.5s | 76% |
7.2 业务指标改善
- 交易成功率: +32%
- 平均议价轮数: -28%
- 卖家验证通过率: +45%
- 便利店发货采纳率: +38%
- 用户评价提交率: +41%
7.3 煤炉特色优化总结
- 二手商品展示: 智能照片加载+瑕疵标记+状态对比
- 价格谈判优化: 实时议价+智能建议+价格历史
- 信任体系建设: 卖家验证+欺诈检测+纠纷预防
- 物流配送优化: 智能推荐+实时追踪+取货码
- 社群互动: 关注系统+价格提醒+评价系统
- 性能监控: 图片指标+议价指标+安全指标+物流指标
8. 架构最佳实践
8.1 必须实施的优化
- ✅ 二手照片智能压缩
- ✅ 议价聊天虚拟化
- ✅ 卖家验证并行处理
- ✅ 配送选项智能排序
- ✅ 评价内容懒加载
8.2 高级优化方案
- 🔄 AI照片质量评估
- 🔄 智能议价助手
- 🔄 区块链交易记录
- 🔄 AR商品状态预览
- 🔄 预测性物流推荐
8.3 监控体系建设
- 📊 照片加载成功率
- 📊 议价转化漏斗
- 📊 欺诈检测准确率
- 📊 配送准时率
- 📊 用户信任指数
