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WordPress柔性供应链数据库设计与优化教程

WordPress柔性供应链数据库设计与优化教程

引言：柔性供应链在电商时代的重要性

在当今快速变化的电商环境中，供应链的灵活性已成为企业竞争力的关键因素。WordPress作为全球最流行的内容管理系统，结合WooCommerce等电商插件，能够构建强大的在线商店。然而，随着业务规模扩大，传统的固定供应链数据模型往往无法适应多变的市场需求。本文将深入探讨如何为WordPress设计并优化一个柔性供应链数据库系统，使您的电商平台能够智能响应库存变化、供应商调整和物流波动。

一、柔性供应链数据库核心设计原则

柔性供应链数据库的核心在于"可配置性"和"可扩展性"。与刚性供应链系统不同，柔性设计允许动态调整供应链节点、路由规则和库存策略，而无需重构整个数据库。

设计原则包括：

模块化设计 - 各供应链组件独立可替换
策略驱动 - 业务规则与数据存储分离
实时响应 - 支持动态库存分配和路由
历史追踪 - 完整记录供应链状态变化

二、数据库表结构设计与实现

以下是一个完整的柔性供应链数据库表结构示例，包含核心表和关系：

-- 创建供应链主表
CREATE TABLE wp_flex_supply_chain (
    chain_id INT AUTO_INCREMENT PRIMARY KEY,
    chain_name VARCHAR(100) NOT NULL,
    description TEXT,
    is_active BOOLEAN DEFAULT TRUE,
    priority INT DEFAULT 1 COMMENT '供应链优先级，数字越小优先级越高',
    created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
    updated_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci;

-- 供应链节点表（供应商、仓库、配送中心等）
CREATE TABLE wp_supply_nodes (
    node_id INT AUTO_INCREMENT PRIMARY KEY,
    node_type ENUM('supplier', 'warehouse', 'distribution_center', 'store') NOT NULL,
    node_name VARCHAR(100) NOT NULL,
    location_id INT COMMENT '关联地理位置',
    capacity DECIMAL(10,2) COMMENT '节点容量',
    lead_time_days INT DEFAULT 1 COMMENT '前置时间（天）',
    cost_per_unit DECIMAL(10,2) COMMENT '单位成本',
    is_active BOOLEAN DEFAULT TRUE,
    metadata LONGTEXT COMMENT 'JSON格式的扩展属性',
    FOREIGN KEY (location_id) REFERENCES wp_locations(location_id)
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci;

-- 供应链节点关系表（定义节点间的连接和路由）
CREATE TABLE wp_node_relationships (
    relationship_id INT AUTO_INCREMENT PRIMARY KEY,
    from_node_id INT NOT NULL,
    to_node_id INT NOT NULL,
    chain_id INT NOT NULL,
    transit_days INT DEFAULT 1,
    cost DECIMAL(10,2) DEFAULT 0.00,
    max_capacity INT COMMENT '最大流通量',
    conditions LONGTEXT COMMENT '路由条件（JSON格式）',
    FOREIGN KEY (from_node_id) REFERENCES wp_supply_nodes(node_id),
    FOREIGN KEY (to_node_id) REFERENCES wp_supply_nodes(node_id),
    FOREIGN KEY (chain_id) REFERENCES wp_flex_supply_chain(chain_id),
    UNIQUE KEY unique_relationship (from_node_id, to_node_id, chain_id)
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci;

-- 库存动态分配表
CREATE TABLE wp_inventory_allocation (
    allocation_id INT AUTO_INCREMENT PRIMARY KEY,
    product_id BIGINT(20) NOT NULL,
    node_id INT NOT NULL,
    quantity_available INT DEFAULT 0,
    quantity_reserved INT DEFAULT 0,
    reorder_point INT DEFAULT 10 COMMENT '再订货点',
    reorder_quantity INT DEFAULT 50 COMMENT '再订货数量',
    allocation_rules LONGTEXT COMMENT '分配规则（JSON格式）',
    last_updated TIMESTAMP DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP,
    FOREIGN KEY (product_id) REFERENCES wp_posts(ID),
    FOREIGN KEY (node_id) REFERENCES wp_supply_nodes(node_id),
    INDEX idx_product_node (product_id, node_id)
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci;

三、核心业务逻辑与代码实现

3.1 智能库存分配算法

以下PHP代码实现了一个基于规则的库存分配算法：

<?php
/**
 * 柔性库存分配器
 * 根据预设规则自动分配库存到最优节点
 */
class FlexibleInventoryAllocator {
    
    private $db;
    
    public function __construct() {
        global $wpdb;
        $this->db = $wpdb;
    }
    
    /**
     * 智能分配库存到供应链节点
     * @param int $product_id 产品ID
     * @param int $quantity 需要分配的数量
     * @param array $preferences 分配偏好设置
     * @return array 分配结果
     */
    public function allocateInventory($product_id, $quantity, $preferences = []) {
        // 获取所有可用节点
        $available_nodes = $this->getAvailableNodes($product_id);
        
        // 应用分配规则
        $filtered_nodes = $this->applyAllocationRules($available_nodes, $preferences);
        
        // 按优先级排序节点
        $sorted_nodes = $this->sortNodesByPriority($filtered_nodes);
        
        // 执行分配
        $allocation_result = [];
        $remaining_quantity = $quantity;
        
        foreach ($sorted_nodes as $node) {
            if ($remaining_quantity <= 0) break;
            
            // 计算该节点可分配数量
            $node_capacity = min($node['available_capacity'], $remaining_quantity);
            
            if ($node_capacity > 0) {
                // 执行数据库分配
                $this->executeAllocation($product_id, $node['node_id'], $node_capacity);
                
                $allocation_result[] = [
                    'node_id' => $node['node_id'],
                    'node_name' => $node['node_name'],
                    'allocated_quantity' => $node_capacity,
                    'cost' => $node['cost_per_unit'] * $node_capacity
                ];
                
                $remaining_quantity -= $node_capacity;
            }
        }
        
        // 记录分配日志
        $this->logAllocation($product_id, $quantity, $allocation_result);
        
        return [
            'success' => $remaining_quantity == 0,
            'allocated' => $allocation_result,
            'remaining' => $remaining_quantity
        ];
    }
    
    /**
     * 获取产品可用节点
     */
    private function getAvailableNodes($product_id) {
        $query = "
            SELECT 
                n.node_id,
                n.node_name,
                n.node_type,
                n.cost_per_unit,
                n.lead_time_days,
                COALESCE(ia.quantity_available - ia.quantity_reserved, 0) as available_capacity,
                n.metadata
            FROM {$this->db->prefix}supply_nodes n
            LEFT JOIN {$this->db->prefix}inventory_allocation ia 
                ON n.node_id = ia.node_id AND ia.product_id = %d
            WHERE n.is_active = 1
            ORDER BY n.cost_per_unit ASC, n.lead_time_days ASC
        ";
        
        return $this->db->get_results(
            $this->db->prepare($query, $product_id),
            ARRAY_A
        );
    }
    
    /**
     * 应用分配规则
     */
    private function applyAllocationRules($nodes, $rules) {
        $filtered_nodes = [];
        
        foreach ($nodes as $node) {
            $metadata = json_decode($node['metadata'], true);
            
            // 示例规则：排除成本高于阈值的节点
            if (!empty($rules['max_cost']) && $node['cost_per_unit'] > $rules['max_cost']) {
                continue;
            }
            
            // 示例规则：只选择特定类型的节点
            if (!empty($rules['allowed_types']) && 
                !in_array($node['node_type'], $rules['allowed_types'])) {
                continue;
            }
            
            // 示例规则：检查自定义元数据条件
            if (!empty($rules['metadata_conditions'])) {
                $passed = true;
                foreach ($rules['metadata_conditions'] as $key => $value) {
                    if (!isset($metadata[$key]) || $metadata[$key] != $value) {
                        $passed = false;
                        break;
                    }
                }
                if (!$passed) continue;
            }
            
            $filtered_nodes[] = $node;
        }
        
        return $filtered_nodes;
    }
    
    /**
     * 执行实际数据库分配
     */
    private function executeAllocation($product_id, $node_id, $quantity) {
        // 检查是否已存在分配记录
        $existing = $this->db->get_var($this->db->prepare(
            "SELECT allocation_id FROM {$this->db->prefix}inventory_allocation 
             WHERE product_id = %d AND node_id = %d",
            $product_id, $node_id
        ));
        
        if ($existing) {
            // 更新现有记录
            $this->db->query($this->db->prepare(
                "UPDATE {$this->db->prefix}inventory_allocation 
                 SET quantity_reserved = quantity_reserved + %d,
                     last_updated = NOW()
                 WHERE product_id = %d AND node_id = %d",
                $quantity, $product_id, $node_id
            ));
        } else {
            // 插入新记录
            $this->db->insert(
                "{$this->db->prefix}inventory_allocation",
                [
                    'product_id' => $product_id,
                    'node_id' => $node_id,
                    'quantity_reserved' => $quantity,
                    'quantity_available' => 0
                ],
                ['%d', '%d', '%d', '%d']
            );
        }
    }
}
?>

3.2 动态供应链路由引擎

<?php
/**
 * 动态供应链路由引擎
 * 根据实时条件选择最优供应链路径
 */
class DynamicSupplyChainRouter {
    
    /**
     * 查找最优供应链路径
     * @param int $product_id 产品ID
     * @param int $destination_id 目的地节点ID
     * @param int $quantity 数量
     * @param array $constraints 约束条件（最大成本、最长时间等）
     * @return array 最优路径和详细信息
     */
    public function findOptimalPath($product_id, $destination_id, $quantity, $constraints = []) {
        // 获取所有可用源节点（有库存的节点）
        $source_nodes = $this->getSourceNodesWithInventory($product_id, $quantity);
        
        $best_path = null;
        $best_score = PHP_INT_MAX;
        
        // 对每个可能的源节点计算最优路径
        foreach ($source_nodes as $source) {
            $paths = $this->findAllPaths($source['node_id'], $destination_id);
            
            foreach ($paths as $path) {
                // 计算路径得分（基于成本、时间等因素）
                $score = $this->calculatePathScore($path, $quantity, $constraints);
                
                // 检查是否满足所有约束
                if ($this->checkConstraints($path, $constraints) && $score < $best_score) {
                    $best_score = $score;
                    $best_path = [
                        'path' => $path,
                        'source_node' => $source,
                        'total_cost' => $this->calculateTotalCost($path, $quantity),
                        'total_time' => $this->calculateTotalTime($path),
                        'score' => $score
                    ];
                }
            }
        }
        
        return $best_path;
    }
    
    /**
     * 使用Dijkstra算法查找所有路径
     */
    private function findAllPaths($start_id, $end_id, $max_depth = 5) {
        // 实现路径查找算法
        // 这里简化为数据库查询
        $query = "
            WITH RECURSIVE supply_path AS (
                SELECT 
                    from_node_id,
                    to_node_id,
                    transit_days,
                    cost,
                    CAST(from_node_id AS CHAR(200)) AS path,
                    1 as depth
                FROM {$this->db->prefix}node_relationships
                WHERE from_node_id = %d
                
                UNION ALL
                
                SELECT 
                    nr.from_node_id,
                    nr.to_node_id,
                    sp.transit_days + nr.transit_days,
                    sp.cost + nr.cost,
                    CONCAT(sp.path, '->', nr.from_node_id),
                    sp.depth + 1
                FROM {$this->db->prefix}node_relationships nr
                INNER JOIN supply_path sp ON nr.from_node_id = sp.to_node_id
                WHERE sp.depth < %d
            )
            SELECT * FROM supply_path WHERE to_node_id = %d
        ";
        
        return $this->db->get_results(
            $this->db->prepare($query, $start_id, $max_depth, $end_id),
            ARRAY_A
        );
    }
}
?>

四、数据库优化策略

4.1 索引优化建议

-- 添加优化索引
CREATE INDEX idx_node_type_active ON wp_supply_nodes(node_type, is_active);
CREATE INDEX idx_inventory_product ON wp_inventory_allocation(product_id, quantity_available);
CREATE INDEX idx_relationships_chain ON wp_node_relationships(chain_id, from_node_id);
CREATE INDEX idx_allocation_updated ON wp_inventory_allocation(last_updated);

-- 复合索引示例
CREATE INDEX idx_node_location_capacity ON wp_supply_nodes(location_id, capacity, is_active);

4.2 查询优化技巧

<?php
/**
 * 优化后的库存查询示例
 */
class OptimizedInventoryQuery {
    
    /**
     * 使用分页和缓存优化大批量库存查询
     */
    public function getOptimizedInventoryReport($page = 1, $per_page = 50) {
        $cache_key = 'inventory_report_' . $page . '_' . $per_page;
        $cached_result = wp_cache_get($cache_key, 'supply_chain');
        
        if ($cached_result !== false) {
            return $cached_result;
        }
        
        $offset = ($page - 1) * $per_page;
        
        // 使用优化后的JOIN和索引提示
        $query = "
            SELECT SQL_CALC_FOUND_ROWS
                p.ID as product_id,
                p.post_title as product_name,
                GROUP_CONCAT(
                    CONCAT(n.node_name, ':', ia.quantity_available)
                    ORDER BY n.cost_per_unit
                    SEPARATOR '|'
                ) as node_inventory,
                SUM(ia.quantity_available) as total_available,
                SUM(ia.quantity_reserved) as total_reserved
            FROM {$this->db->prefix}posts p
            INNER JOIN {$this->db->prefix}inventory_allocation ia 
                FORCE INDEX (idx_inventory_product)
                ON p.ID = ia.product_id
            INNER JOIN {$this->db->prefix}supply_nodes n 
                FORCE INDEX (idx_node_type_active)
                ON ia.node_id = n.node_id
            WHERE p.post_type = 'product'
                AND p.post_status = 'publish'
                AND n.is_active = 1
            GROUP BY p.ID
            ORDER BY p.post_title
            LIMIT %d, %d
        ";
        
        $results = $this->db->get_results(
            $this->db->prepare($query, $offset, $per_page),
            ARRAY_A
        );
        
        $total = $this->db->get_var("SELECT FOUND_ROWS()");
        
        $response = [
            'data' => $results,
            'pagination' => [
                'page' => $page,
                'per_page' => $per_page,
                'total' => $total,
                'total_pages' => ceil($total / $per_page)
            ]
        ];
        
        // 缓存结果5分钟
        wp_cache_set($cache_key, $response, 'supply_chain', 300);
        
        return $response;
    }
}
?>

4.3 分区表策略

对于大型电商网站，考虑按时间或产品类别对表进行分区：

-- 按月份对库存分配表进行分区
ALTER TABLE wp_inventory_allocation
PARTITION BY RANGE (MONTH(last_updated)) (
    PARTITION p1 VALUES LESS THAN (2),
    PARTITION p2 VALUES LESS THAN (3),
    PARTITION p3 VALUES LESS THAN (4),
    PARTITION p4 VALUES LESS THAN (5),
    PARTITION p5 VALUES LESS THAN (6),
    PARTITION p6 VALUES LESS THAN (7),
    PARTITION p7 VALUES LESS THAN (8),
    PARTITION p8 VALUES LESS THAN (9),
    PARTITION p9 VALUES LESS THAN (10),
    PARTITION p10 VALUES LESS THAN (11),
    PARTITION p11 VALUES LESS THAN (12),
    PARTITION p12 VALUES LESS THAN MAXVALUE
);

五、监控与维护

5.1 性能监控查询

-- 监控查询性能
SELECT 
    TABLE_NAME,
    TABLE_ROWS,
    DATA_LENGTH,
    INDEX_LENGTH,
    ROUND((DATA_LENGTH + INDEX_LENGTH) / 1024 / 1024, 2) AS 'Size(MB)'
FROM information_schema.TABLES
WHERE TABLE_SCHEMA = DATABASE()
    AND TABLE_NAME LIKE 'wp_supply_%'
ORDER BY (DATA_LENGTH + INDEX_LENGTH) DESC;

-- 查找需要优化的慢查询
SELECT 
    node_id,
    COUNT(*) as allocation_count,
    AVG(quantity_available) as avg_inventory,
    MIN(last_updated) as oldest_update
FROM wp_inventory_allocation
GROUP BY node_id
HAVING oldest_update < DATE_SUB(NOW(), INTERVAL 7 DAY);

5.2 自动化维护脚本

<?php
/**
 * 供应链数据库维护类
 */
class SupplyChainMaintenance {
    
    /**
     * 定期清理和优化数据库
     */
    public function performRegularMaintenance() {
        $this->cleanOldReservations();

rebalanceInventory();

    $this->updateNodeStatistics();
    $this->optimizeTables();
}

/**
 * 清理过期的库存预留
 */
private function cleanOldReservations() {
    // 清理超过7天的未确认预留
    $query = "
        UPDATE {$this->db->prefix}inventory_allocation 
        SET quantity_reserved = GREATEST(0, quantity_reserved - expired.reserved_qty)
        FROM (
            SELECT 
                allocation_id,
                quantity_reserved as reserved_qty
            FROM {$this->db->prefix}inventory_allocation 
            WHERE quantity_reserved > 0 
                AND last_updated < DATE_SUB(NOW(), INTERVAL 7 DAY)
        ) as expired
        WHERE {$this->db->prefix}inventory_allocation.allocation_id = expired.allocation_id
    ";
    
    $this->db->query($query);
    
    // 记录清理日志
    $this->logMaintenanceAction('clean_old_reservations', $this->db->rows_affected);
}

/**
 * 库存再平衡
 */
private function rebalanceInventory() {
    // 识别需要再平衡的节点
    $query = "
        SELECT 
            ia.product_id,
            ia.node_id,
            ia.quantity_available,
            ia.reorder_point,
            ia.reorder_quantity,
            n.node_type,
            n.capacity
        FROM {$this->db->prefix}inventory_allocation ia
        JOIN {$this->db->prefix}supply_nodes n ON ia.node_id = n.node_id
        WHERE ia.quantity_available <= ia.reorder_point
            AND n.is_active = 1
        ORDER BY ia.quantity_available ASC
    ";
    
    $low_stock_items = $this->db->get_results($query, ARRAY_A);
    
    foreach ($low_stock_items as $item) {
        $this->triggerReorder($item);
    }
}

}
?>


## 六、与WooCommerce集成

### 6.1 WooCommerce钩子集成

<?php
/**

WordPress柔性供应链与WooCommerce集成类
*/

class WooCommerceSupplyChainIntegration {


public function __construct() {
    // 订单创建时触发库存分配
    add_action('woocommerce_checkout_order_processed', [$this, 'handleNewOrder'], 10, 3);
    
    // 订单状态变化时更新库存
    add_action('woocommerce_order_status_changed', [$this, 'handleOrderStatusChange'], 10, 4);
    
    // 在产品页面显示库存信息
    add_filter('woocommerce_get_availability', [$this, 'displayFlexibleStock'], 10, 2);
    
    // 在购物车中验证库存
    add_filter('woocommerce_add_to_cart_validation', [$this, 'validateStockOnAddToCart'], 10, 3);
}

/**
 * 处理新订单 - 智能分配库存
 */
public function handleNewOrder($order_id, $posted_data, $order) {
    $allocator = new FlexibleInventoryAllocator();
    
    foreach ($order->get_items() as $item) {
        $product_id = $item->get_product_id();
        $quantity = $item->get_quantity();
        
        // 获取配送地址信息
        $shipping_address = $order->get_shipping();
        
        // 构建分配偏好
        $preferences = [
            'max_cost' => $this->calculateMaxShippingCost($order),
            'max_time' => $this->getMaxDeliveryTime($order),
            'allowed_types' => ['warehouse', 'distribution_center'],
            'metadata_conditions' => [
                'region' => $this->determineRegion($shipping_address)
            ]
        ];
        
        // 执行智能库存分配
        $result = $allocator->allocateInventory($product_id, $quantity, $preferences);
        
        // 将分配结果保存到订单元数据
        if ($result['success']) {
            update_post_meta($order_id, '_supply_chain_allocation_' . $product_id, $result['allocated']);
            
            // 更新订单备注
            $allocation_note = sprintf(
                __('产品 #%d 已从以下节点分配库存：%s', 'flex-supply-chain'),
                $product_id,
                implode(', ', array_column($result['allocated'], 'node_name'))
            );
            $order->add_order_note($allocation_note);
        } else {
            // 库存不足处理
            $this->handleInsufficientStock($order, $product_id, $result['remaining']);
        }
    }
    
    // 触发供应链路由计算
    $this->calculateOptimalShippingPath($order);
}

/**
 * 根据订单状态更新库存
 */
public function handleOrderStatusChange($order_id, $old_status, $new_status, $order) {
    $allocations = get_post_meta($order_id, '_supply_chain_allocations', true);
    
    if (empty($allocations)) {
        return;
    }
    
    switch ($new_status) {
        case 'cancelled':
            // 取消订单，释放预留库存
            $this->releaseReservedInventory($order_id);
            break;
            
        case 'completed':
            // 订单完成，确认库存扣除
            $this->confirmInventoryDeduction($order_id);
            break;
            
        case 'processing':
            // 开始处理，触发物流准备
            $this->triggerShippingPreparation($order_id);
            break;
    }
}

/**
 * 在前端显示柔性库存信息
 */
public function displayFlexibleStock($availability, $product) {
    $product_id = $product->get_id();
    
    // 获取所有节点的可用库存总和
    $total_stock = $this->calculateTotalAvailableStock($product_id);
    
    // 获取最快交货时间
    $fastest_delivery = $this->getFastestDeliveryTime($product_id);
    
    if ($total_stock > 0) {
        $availability['availability'] = sprintf(
            __('有库存 (总计: %d件, 最快%s天送达)', 'flex-supply-chain'),
            $total_stock,
            $fastest_delivery
        );
        $availability['class'] = 'in-stock';
    } else {
        // 检查是否有在途库存
        $in_transit = $this->getInTransitStock($product_id);
        if ($in_transit > 0) {
            $availability['availability'] = sprintf(
                __('补货中 (%d件在途)', 'flex-supply-chain'),
                $in_transit
            );
            $availability['class'] = 'available-on-backorder';
        }
    }
    
    return $availability;
}

/**
 * 计算产品总可用库存
 */
private function calculateTotalAvailableStock($product_id) {
    global $wpdb;
    
    $query = "
        SELECT SUM(quantity_available - quantity_reserved) as total_available
        FROM {$wpdb->prefix}inventory_allocation
        WHERE product_id = %d
            AND (quantity_available - quantity_reserved) > 0
    ";
    
    return (int) $wpdb->get_var($wpdb->prepare($query, $product_id));
}

}
?>


### 6.2 自定义管理界面

<?php
/**

WordPress后台管理界面扩展
*/

class SupplyChainAdminInterface {


public function __construct() {
    add_action('admin_menu', [$this, 'addAdminMenu']);
    add_action('admin_enqueue_scripts', [$this, 'enqueueAdminScripts']);
    add_action('wp_ajax_update_supply_chain', [$this, 'handleAjaxRequest']);
}

/**
 * 添加管理菜单
 */
public function addAdminMenu() {
    add_menu_page(
        __('柔性供应链', 'flex-supply-chain'),
        __('供应链', 'flex-supply-chain'),
        'manage_options',
        'flex-supply-chain',
        [$this, 'renderDashboard'],
        'dashicons-networking',
        30
    );
    
    add_submenu_page(
        'flex-supply-chain',
        __('节点管理', 'flex-supply-chain'),
        __('节点管理', 'flex-supply-chain'),
        'manage_options',
        'supply-nodes',
        [$this, 'renderNodesPage']
    );
    
    add_submenu_page(
        'flex-supply-chain',
        __('库存分配', 'flex-supply-chain'),
        __('库存分配', 'flex-supply-chain'),
        'manage_options',
        'inventory-allocation',
        [$this, 'renderInventoryPage']
    );
}

/**
 * 渲染供应链仪表板
 */
public function renderDashboard() {
    ?>
    <div class="wrap">
        <h1><?php _e('柔性供应链仪表板', 'flex-supply-chain'); ?></h1>
        
        <div class="supply-chain-dashboard">
            <!-- 关键指标卡片 -->
            <div class="dashboard-cards">
                <div class="card">
                    <h3><?php _e('总节点数', 'flex-supply-chain'); ?></h3>
                    <p class="number"><?php echo $this->getTotalNodes(); ?></p>
                </div>
                
                <div class="card">
                    <h3><?php _e('活跃供应链', 'flex-supply-chain'); ?></h3>
                    <p class="number"><?php echo $this->getActiveChains(); ?></p>
                </div>
                
                <div class="card">
                    <h3><?php _e('低库存产品', 'flex-supply-chain'); ?></h3>
                    <p class="number warning"><?php echo $this->getLowStockProducts(); ?></p>
                </div>
            </div>
            
            <!-- 供应链可视化 -->
            <div class="supply-chain-visualization">
                <h2><?php _e('供应链网络图', 'flex-supply-chain'); ?></h2>
                <div id="network-graph" style="width: 100%; height: 500px;"></div>
            </div>
            
            <!-- 实时监控 -->
            <div class="real-time-monitor">
                <h2><?php _e('实时库存监控', 'flex-supply-chain'); ?></h2>
                <table class="wp-list-table widefat fixed striped">
                    <thead>
                        <tr>
                            <th><?php _e('产品', 'flex-supply-chain'); ?></th>
                            <th><?php _e('总库存', 'flex-supply-chain'); ?></th>
                            <th><?php _e('已预留', 'flex-supply-chain'); ?></th>
                            <th><?php _e('可用', 'flex-supply-chain'); ?></th>
                            <th><?php _e('状态', 'flex-supply-chain'); ?></th>
                        </tr>
                    </thead>
                    <tbody>
                        <?php $this->renderInventoryTable(); ?>
                    </tbody>
                </table>
            </div>
        </div>
    </div>
    
    <script>
    // 使用D3.js或vis.js渲染供应链网络图
    jQuery(document).ready(function($) {
        // 初始化网络图
        initSupplyChainGraph();
        
        // 实时更新数据
        setInterval(updateDashboardData, 30000);
    });
    </script>
    <?php
}

/**
 * 渲染库存表格
 */
private function renderInventoryTable() {
    global $wpdb;
    
    $query = "
        SELECT 
            p.ID,
            p.post_title,
            SUM(ia.quantity_available) as total_stock,
            SUM(ia.quantity_reserved) as total_reserved,
            (SUM(ia.quantity_available) - SUM(ia.quantity_reserved)) as available
        FROM {$wpdb->prefix}posts p
        LEFT JOIN {$wpdb->prefix}inventory_allocation ia ON p.ID = ia.product_id
        WHERE p.post_type = 'product'
            AND p.post_status = 'publish'
        GROUP BY p.ID
        ORDER BY available ASC
        LIMIT 20
    ";
    
    $products = $wpdb->get_results($query);
    
    foreach ($products as $product) {
        $status_class = $product->available > 10 ? 'status-ok' : 
                       ($product->available > 0 ? 'status-warning' : 'status-critical');
        
        echo '<tr>';
        echo '<td>' . esc_html($product->post_title) . '</td>';
        echo '<td>' . esc_html($product->total_stock) . '</td>';
        echo '<td>' . esc_html($product->total_reserved) . '</td>';
        echo '<td>' . esc_html($product->available) . '</td>';
        echo '<td><span class="' . $status_class . '">' . $this->getStockStatus($product->available) . '</span></td>';
        echo '</tr>';
    }
}

}
?>


## 七、高级功能扩展

### 7.1 机器学习预测模块

<?php
/**

基于机器学习的需求预测模块
*/

class MLDemandForecaster {


private $model_path;

public function __construct() {
    $this->model_path = WP_CONTENT_DIR . '/uploads/supply-chain-models/';
    $this->ensureModelDirectory();
}

/**
 * 训练需求预测模型
 */
public function trainDemandModel($product_ids = []) {
    // 收集历史销售数据
    $training_data = $this->collectHistoricalData($product_ids);
    
    // 特征工程
    $features = $this->extractFeatures($training_data);
    
    // 使用PHP-ML库训练模型
    $classifier = new PhpmlRegressionSVR(PhpmlRegressionSVR::EPSILON_SVR);
    
    // 准备训练集
    $samples = [];
    $targets = [];
    
    foreach ($features as $feature_set) {
        $samples[] = array_values($feature_set['features']);
        $targets[] = $feature_set['demand'];
    }
    
    // 训练模型
    $classifier->train($samples, $targets);
    
    // 保存模型
    $model_file = $this->model_path . 'demand_model_' . date('Ymd') . '.phpml';
    file_put_contents($model_file, serialize($classifier));
    
    // 评估模型准确率
    $accuracy = $this->evaluateModel($classifier, $training_data);
    
    return [
        'model_file' => $model_file,
        'accuracy' => $accuracy,
        'training_samples' => count($samples)
    ];
}

/**
 * 预测未来需求
 */
public function predictDemand($product_id, $days_ahead = 7) {
    // 加载最新模型
    $model = $this->loadLatestModel();
    
    if (!$model) {
        return $this->fallbackPrediction($product_id, $days_ahead);
    }
    
    // 准备预测特征
    $features = $this->preparePredictionFeatures($product_id, $days_ahead);
    
    // 执行预测
    $predicted_demand = $model->predict([$features]);
    
    // 考虑季节性因素
    $seasonal_adjustment = $this->calculateSeasonalAdjustment($product_id, $days_ahead);
    
    $final_prediction = $predicted_demand[0] * $seasonal_adjustment;
    
    return [
        'predicted_demand' => max(0, round($final_prediction)),
        'confidence' => $this->calculateConfidence($product_id),
        'seasonal_factor' => $seasonal_adjustment
    ];
}

/**
 * 收集历史数据
 */
private function collectHistoricalData($product_ids) {
    global $wpdb;
    
    $query = "
        SELECT 
            p.ID as product_id,
            DATE(o.post_date) as sale_date,
            DAYOFWEEK(o.post_date) as day_of_week,
            MONTH(o.post_date) as month,
            im.meta_value as sale_price,
            COUNT(oi.order_item_id) as quantity_sold
        FROM {$wpdb->prefix}posts p
        JOIN {$wpdb->prefix}woocommerce_order_items oi ON p.ID = oi.order_item_id
        JOIN {$wpdb->prefix}posts o ON oi.order_id = o.ID
        LEFT JOIN {$wpdb->prefix}postmeta im ON p.ID = im.post_id AND im.meta_key = '_price'
        WHERE p.post_type = 'product'
            AND o.post_status IN ('wc-completed', 'wc-processing')
            AND o.post_date >= DATE_SUB(NOW(), INTERVAL 1 YEAR)
    ";
    
    if (!empty($product_ids)) {
        $query .= " AND p.ID IN (" . implode(',', array_map('intval', $product_ids)) . ")";
    }
    
    $query .= " GROUP BY p.ID, DATE(o.post_date) ORDER BY sale_date ASC";
    
    return $wpdb->get_results($query, ARRAY_A);
}

}
?>


### 7.2 实时库存同步API

<?php
/**

REST API端点用于实时库存同步
*/

class SupplyChainRESTAPI {


public function __construct() {
    add_action('rest_api_init', [$this, 'registerRoutes']);
}

/**
 * 注册REST API路由
 */
public function registerRoutes() {
    // 获取库存信息
    register_rest_route('flex-supply-chain/v1', '/inventory/(?P<product_id>d+)', [
        'methods' => 'GET',
        'callback' => [$this, 'getInventory'],
        'permission_callback' => [$this, 'checkApiPermission'],
        'args' => [
            'product_id' => [
                'validate_callback' => function($param) {
                    return is_numeric($param);
                }
            ]
        ]
    ]);
    
    // 更新库存
    register_rest_route('flex-supply-chain/v1', '/inventory', [
        'methods' => 'POST',
        'callback' => [$this, 'updateInventory'],
        'permission_callback' => [$this, 'checkApiPermission']
    ]);
    
    // 获取供应链状态
    register_rest_route('flex-supply

WordPress柔性供应链数据库设计与优化教程

WordPress柔性供应链数据库设计与优化教程

引言：柔性供应链在电商时代的重要性

一、柔性供应链数据库核心设计原则

二、数据库表结构设计与实现

三、核心业务逻辑与代码实现

3.1 智能库存分配算法

3.2 动态供应链路由引擎

四、数据库优化策略

4.1 索引优化建议

4.2 查询优化技巧

4.3 分区表策略

五、监控与维护

5.1 性能监控查询

5.2 自动化维护脚本

EXCHANGES®作者

发表回复取消回复

联系我们

WordPress柔性供应链数据库设计与优化教程

引言：柔性供应链在电商时代的重要性

一、柔性供应链数据库核心设计原则

二、数据库表结构设计与实现

三、核心业务逻辑与代码实现

3.1 智能库存分配算法

3.2 动态供应链路由引擎

四、数据库优化策略

4.1 索引优化建议

4.2 查询优化技巧

4.3 分区表策略

五、监控与维护

5.1 性能监控查询

5.2 自动化维护脚本

EXCHANGES®作者

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