网络通信优化

本文档详细介绍了Eagle2Ae AE扩展的网络通信优化策略，帮助提升与Eagle插件的通信效率和稳定性。

概述

网络通信优化是确保Eagle2Ae扩展与Eagle插件高效通信的关键。本指南涵盖连接池管理、请求批处理、智能重连策略等优化技术。

连接池管理

实现HTTP轮询连接池

HTTP轮询不需要持久连接，但可以通过连接池管理优化请求：

class ConnectionPool {
    constructor() {
        this.connections = new Map();
        this.maxConnections = 5;
        this.connectionTimeout = 10000;
    }
    
    async getConnection(url) {
        if (this.connections.has(url)) {
            const conn = this.connections.get(url);
            if (conn.isAlive()) {
                return conn;
            }
        }
        
        // 创建新连接
        const connection = await this.createConnection(url);
        this.connections.set(url, connection);
        return connection;
    }
    
    async createConnection(url) {
        // HTTP轮询不需要持久连接，直接返回URL
        return url;
    }
    
    async makeRequest(url, options = {}) {
        const controller = new AbortController();
        const timeoutId = setTimeout(() => controller.abort(), this.connectionTimeout);
        
        try {
            const response = await fetch(url, {
                ...options,
                signal: controller.signal
            });
            
            clearTimeout(timeoutId);
            return response;
        } catch (error) {
            clearTimeout(timeoutId);
            throw error;
        }
    }
}

请求批处理

批量处理请求

将多个请求合并为一个批量请求，减少网络开销：

class BatchRequestManager {
    constructor() {
        this.pendingRequests = [];
        this.batchSize = 10;
        this.batchTimeout = 100; // 100ms
        this.batchTimer = null;
    }
    
    addRequest(request) {
        this.pendingRequests.push(request);
        
        if (this.pendingRequests.length >= this.batchSize) {
            this.processBatch();
        } else if (!this.batchTimer) {
            this.batchTimer = setTimeout(() => {
                this.processBatch();
            }, this.batchTimeout);
        }
    }
    
    processBatch() {
        if (this.batchTimer) {
            clearTimeout(this.batchTimer);
            this.batchTimer = null;
        }
        
        if (this.pendingRequests.length === 0) {
            return;
        }
        
        const batch = this.pendingRequests.splice(0, this.batchSize);
        this.sendBatchRequest(batch);
    }
    
    async sendBatchRequest(requests) {
        try {
            const response = await fetch('/api/batch', {
                method: 'POST',
                headers: { 'Content-Type': 'application/json' },
                body: JSON.stringify({ requests })
            });
            
            const results = await response.json();
            this.handleBatchResponse(requests, results);
        } catch (error) {
            this.handleBatchError(requests, error);
        }
    }
}

智能重连策略

指数退避重连

实现智能重连策略，避免频繁重连导致的问题：

class SmartReconnectManager {
    constructor() {
        this.reconnectAttempts = 0;
        this.maxReconnectAttempts = 5;
        this.baseDelay = 1000;
        this.maxDelay = 30000;
        this.backoffFactor = 2;
    }
    
    calculateDelay() {
        // 指数退避算法
        const delay = Math.min(
            this.baseDelay * Math.pow(this.backoffFactor, this.reconnectAttempts),
            this.maxDelay
        );
        
        // 添加随机抖动
        const jitter = delay * 0.1 * Math.random();
        return delay + jitter;
    }
    
    async reconnect(url, options = {}) {
        if (this.reconnectAttempts >= this.maxReconnectAttempts) {
            throw new Error('超过最大重连次数');
        }
        
        const delay = this.calculateDelay();
        await this.sleep(delay);
        
        try {
            // 使用HTTP轮询进行连接测试
            const response = await fetch(url, {
                method: 'GET',
                ...options
            });
            
            if (response.ok) {
                this.reconnectAttempts = 0; // 重置计数器
                return response;
            } else {
                throw new Error(`HTTP ${response.status}: ${response.statusText}`);
            }
        } catch (error) {
            this.reconnectAttempts++;
            throw error;
        }
    }
    
    sleep(ms) {
        return new Promise(resolve => setTimeout(resolve, ms));
    }
}

最佳实践总结

1. 网络优化

• 实施连接池管理
• 使用请求批处理
• 智能重连策略

通过遵循这些优化策略，可以显著提升Eagle2Ae扩展的网络通信效率和稳定性。