fix(ops): 修复区域设备索引缓存问题并优化查询性能

1. 修复 listAvailableBadges() 读穿透 bug
   - 改用 areaDeviceService.getDeviceIdsByArea() 获取设备列表
   - 缓存未命中时自动从数据库重建

2. 优化 N+1 查询问题
   - listBadgesByArea() 和 listAvailableBadges() 使用 batchGetBadgeStatus() 批量查询

3. 简化 BadgeDeviceStatusServiceImpl
   - 移除重复的 AREA_BADGES_KEY_PREFIX 常量
   - 区域索引操作委托给 AreaDeviceService 处理

4. 增强缓存可靠性
   - getDeviceIdsByArea() 支持读穿透缓存
   - 缓存 TTL 从 30 分钟延长到 24 小时

Co-Authored-By: Claude (MiniMax-M2.1) <noreply@anthropic.com>

viewsh-module-ops/viewsh-module-environment-biz/src/main/java/com/viewsh/module/ops/environment/service/badge/BadgeDeviceStatusServiceImpl.java

@@ -7,7 +7,6 @@ import jakarta.annotation.Resource;
 import lombok.extern.slf4j.Slf4j;
 import org.springframework.beans.factory.InitializingBean;
 import org.springframework.data.redis.core.RedisTemplate;
-
 import org.springframework.stereotype.Service;
 
 import java.time.LocalDateTime;
@@ -23,13 +22,11 @@ import java.util.stream.Collectors;
  * 职责：
  * 1. 设备状态管理（IDLE/BUSY/PAUSED/OFFLINE）
  * 2. 设备与工单关联管理
- * 3. 区域设备索引管理
- * 4. 心跳超时检查
+ * 3. 区域设备索引查询转发
  * <p>
  * 设计说明：
- * - 状态变更事件由
- * {@link com.viewsh.module.ops.environment.integration.listener.BadgeDeviceStatusEventListener}
- * 处理
+ * - 状态变更由 IoT 事件驱动或定时对账任务触发
+ * - 区域索引维护委托给 {@link AreaDeviceService}
  * - 本类只提供基础的服务方法
  *
  * @author lzh
@@ -48,12 +45,6 @@ public class BadgeDeviceStatusServiceImpl implements BadgeDeviceStatusService, I
      * Redis Key 前缀
      */
     private static final String BADGE_STATUS_KEY_PREFIX = "ops:badge:status:";
-    private static final String AREA_BADGES_KEY_PREFIX = "ops:area:badges:";
-
-    /**
-     * 心跳超时时间（分钟）
-     */
-    private static final int HEARTBEAT_TIMEOUT_MINUTES = 30;
 
     /**
      * 状态过期时间（小时）
@@ -172,16 +163,13 @@ public class BadgeDeviceStatusServiceImpl implements BadgeDeviceStatusService, I
         }
 
         try {
-            String areaKey = AREA_BADGES_KEY_PREFIX + areaId;
-            Set<Object> deviceIds = redisTemplate.opsForSet().members(areaKey);
-
-            if (deviceIds == null || deviceIds.isEmpty()) {
+            Set<Long> deviceIds = areaDeviceService.getDeviceIdsByArea(areaId);
+            if (deviceIds.isEmpty()) {
                 return Collections.emptyList();
             }
 
-            return deviceIds.stream()
-                    .map(id -> Long.parseLong(id.toString()))
-                    .map(this::getBadgeStatus)
+            // 使用批量查询，避免 N+1
+            return batchGetBadgeStatus(new ArrayList<>(deviceIds)).stream()
                     .filter(Objects::nonNull)
                     .filter(dto -> dto.getStatus() != null && dto.getStatus().isActive())
                     .sorted(Comparator.comparing(BadgeDeviceStatusDTO::getStatusChangeTime))
@@ -200,16 +188,14 @@ public class BadgeDeviceStatusServiceImpl implements BadgeDeviceStatusService, I
         }
 
         try {
-            String areaKey = AREA_BADGES_KEY_PREFIX + areaId;
-            Set<Object> deviceIds = redisTemplate.opsForSet().members(areaKey);
-
-            if (deviceIds == null || deviceIds.isEmpty()) {
+            // 使用读穿透方式获取设备ID列表，缓存未命中时会从数据库重建
+            Set<Long> deviceIds = areaDeviceService.getDeviceIdsByArea(areaId);
+            if (deviceIds.isEmpty()) {
                 return Collections.emptyList();
             }
 
-            return deviceIds.stream()
-                    .map(id -> Long.parseLong(id.toString()))
-                    .map(this::getBadgeStatus)
+            // 使用批量查询，避免 N+1
+            return batchGetBadgeStatus(new ArrayList<>(deviceIds)).stream()
                     .filter(Objects::nonNull)
                     .filter(dto -> dto.getStatus() == BadgeDeviceStatusEnum.IDLE)
                     .sorted(Comparator.comparing(BadgeDeviceStatusDTO::getLastHeartbeatTime).reversed())
@@ -274,13 +260,11 @@ public class BadgeDeviceStatusServiceImpl implements BadgeDeviceStatusService, I
                 statusMap.put("lastHeartbeatTime", now);
             }
 
-            // 更新区域信息
+            // 更新实时物理区域信息 (Key2)
             if (areaId != null) {
                 statusMap.put("currentAreaId", areaId);
-                // 更新区域索引
-                addToAreaIndex(deviceId, areaId);
             } else {
-                // 保持现有区域信息
+                // 保持现有实时物理区域信息
                 Object existingAreaId = currentMap.get("currentAreaId");
                 if (existingAreaId != null) {
                     statusMap.put("currentAreaId", existingAreaId);
@@ -474,32 +458,12 @@ public class BadgeDeviceStatusServiceImpl implements BadgeDeviceStatusService, I
 
     @Override
     public void addToAreaIndex(Long deviceId, Long areaId) {
-        if (deviceId == null || areaId == null) {
-            return;
-        }
-
-        try {
-            String areaKey = AREA_BADGES_KEY_PREFIX + areaId;
-            redisTemplate.opsForSet().add(areaKey, deviceId.toString());
-            log.debug("添加设备到区域索引: deviceId={}, areaId={}", deviceId, areaId);
-        } catch (Exception e) {
-            log.error("添加设备到区域索引失败: deviceId={}, areaId={}", deviceId, areaId, e);
-        }
+        areaDeviceService.addToAreaIndex(deviceId, areaId);
     }
 
     @Override
     public void removeFromAreaIndex(Long deviceId, Long areaId) {
-        if (deviceId == null || areaId == null) {
-            return;
-        }
-
-        try {
-            String areaKey = AREA_BADGES_KEY_PREFIX + areaId;
-            redisTemplate.opsForSet().remove(areaKey, deviceId.toString());
-            log.debug("从区域索引移除设备: deviceId={}, areaId={}", deviceId, areaId);
-        } catch (Exception e) {
-            log.error("从区域索引移除设备失败: deviceId={}, areaId={}", deviceId, areaId, e);
-        }
+        areaDeviceService.removeFromAreaIndex(deviceId, areaId);
     }
 
     // ==================== 设备管理 ====================

viewsh-module-ops/viewsh-module-ops-biz/src/main/java/com/viewsh/module/ops/service/area/AreaDeviceService.java

@@ -64,6 +64,14 @@ public interface AreaDeviceService {
      */
     void refreshAreaDeviceIndex();
 
+    /**
+     * 获取区域下的设备ID列表（带读穿透缓存）
+     *
+     * @param areaId 区域ID
+     * @return 设备ID集合
+     */
+    java.util.Set<Long> getDeviceIdsByArea(Long areaId);
+
     /**
      * 添加设备到区域索引
      *

viewsh-module-ops/viewsh-module-ops-biz/src/main/java/com/viewsh/module/ops/service/area/AreaDeviceServiceImpl.java

@@ -14,6 +14,7 @@ import org.springframework.stereotype.Service;
 import java.util.List;
 import java.util.Set;
 import java.util.concurrent.TimeUnit;
+import java.util.stream.Collectors;
 
 /**
  * 区域设备关联服务实现
@@ -63,9 +64,10 @@ public class AreaDeviceServiceImpl implements AreaDeviceService, InitializingBea
     private static final String NULL_CACHE = "NULL";
 
     /**
-     * 缓存 TTL（30 分钟）
+     * 缓存 TTL（24 小时）
+     * 区域设备关系相对静态，可以设置较长过期时间
      */
-    private static final int CACHE_TTL_MINUTES = 30;
+    private static final int CACHE_TTL_HOURS = 24;
 
     @Override
     public void afterPropertiesSet() {
@@ -108,7 +110,8 @@ public class AreaDeviceServiceImpl implements AreaDeviceService, InitializingBea
         }
 
         // 从数据库查询
-        List<OpsAreaDeviceRelationDO> relations = relationMapper.selectListByAreaIdAndRelationType(areaId, relationType);
+        List<OpsAreaDeviceRelationDO> relations = relationMapper.selectListByAreaIdAndRelationType(areaId,
+                relationType);
 
         // 返回第一个启用的
         OpsAreaDeviceRelationDO relation = relations.stream()
@@ -123,9 +126,8 @@ public class AreaDeviceServiceImpl implements AreaDeviceService, InitializingBea
                 stringRedisTemplate.opsForValue().set(
                         cacheKey,
                         JsonUtils.toJsonString(dto),
-                        CACHE_TTL_MINUTES,
-                        TimeUnit.MINUTES
-                );
+                        CACHE_TTL_HOURS,
+                        TimeUnit.HOURS);
             } else {
                 // 空值缓存，防止穿透
                 stringRedisTemplate.opsForValue().set(cacheKey, NULL_CACHE, 1, TimeUnit.MINUTES);
@@ -169,9 +171,8 @@ public class AreaDeviceServiceImpl implements AreaDeviceService, InitializingBea
                 stringRedisTemplate.opsForValue().set(
                         cacheKey,
                         JsonUtils.toJsonString(dto),
-                        CACHE_TTL_MINUTES,
-                        TimeUnit.MINUTES
-                );
+                        CACHE_TTL_HOURS,
+                        TimeUnit.HOURS);
             } else {
                 // 空值缓存，防止穿透
                 stringRedisTemplate.opsForValue().set(cacheKey, NULL_CACHE, 1, TimeUnit.MINUTES);
@@ -213,6 +214,45 @@ public class AreaDeviceServiceImpl implements AreaDeviceService, InitializingBea
         initAreaDeviceIndex();
     }
 
+    @Override
+    public Set<Long> getDeviceIdsByArea(Long areaId) {
+        if (areaId == null) {
+            return Set.of();
+        }
+
+        String areaKey = AREA_BADGES_KEY_PREFIX + areaId;
+        try {
+            Set<Object> members = redisTemplate.opsForSet().members(areaKey);
+            if (members != null && !members.isEmpty()) {
+                return members.stream()
+                        .map(m -> Long.parseLong(m.toString()))
+                        .collect(Collectors.toSet());
+            }
+
+            // 缓存未命中，读穿透从数据库重构
+            log.info("[AreaDevice] 区域索引缓存未命中，从数据库重建：areaId={}", areaId);
+            List<OpsAreaDeviceRelationDO> relations = relationMapper.selectListByAreaIdAndRelationType(areaId, "BADGE");
+
+            Set<Long> deviceIds = relations.stream()
+                    .filter(OpsAreaDeviceRelationDO::getEnabled)
+                    .map(OpsAreaDeviceRelationDO::getDeviceId)
+                    .collect(Collectors.toSet());
+
+            if (!deviceIds.isEmpty()) {
+                // 写入缓存
+                String[] idStrings = deviceIds.stream().map(Object::toString).toArray(String[]::new);
+                redisTemplate.opsForSet().add(areaKey, (Object[]) idStrings);
+                redisTemplate.expire(areaKey, CACHE_TTL_HOURS, TimeUnit.HOURS);
+            }
+
+            return deviceIds;
+
+        } catch (Exception e) {
+            log.error("[AreaDevice] 获取区域设备索引失败：areaId={}", areaId, e);
+            return Set.of();
+        }
+    }
+
     @Override
     public void addToAreaIndex(Long deviceId, Long areaId) {
         if (deviceId == null || areaId == null) {
@@ -222,7 +262,8 @@ public class AreaDeviceServiceImpl implements AreaDeviceService, InitializingBea
         try {
             String areaKey = AREA_BADGES_KEY_PREFIX + areaId;
             redisTemplate.opsForSet().add(areaKey, deviceId.toString());
-            redisTemplate.expire(areaKey, CACHE_TTL_MINUTES, TimeUnit.MINUTES);
+            // 延长过期时间到 24 小时
+            redisTemplate.expire(areaKey, CACHE_TTL_HOURS, TimeUnit.HOURS);
             log.debug("[AreaDevice] 添加设备到区域索引：deviceId={}, areaId={}", deviceId, areaId);
         } catch (Exception e) {
             log.error("[AreaDevice] 添加设备到区域索引失败：deviceId={}, areaId={}", deviceId, areaId, e);