xx

pom.xml

@@ -111,6 +111,12 @@
             <scope>provided</scope>
         </dependency>
 
+        <!-- Caffeine Cache -->
+        <dependency>
+            <groupId>com.github.ben-manes.caffeine</groupId>
+            <artifactId>caffeine</artifactId>
+        </dependency>
+
         <!-- Spring Integration MQTT -->
         <dependency>
             <groupId>org.springframework.integration</groupId>

src/main/java/com/ruoyi/device/domain/impl/ThingsBoardDomainImpl.java

@@ -1,6 +1,9 @@
 package com.ruoyi.device.domain.impl;
 
 
+import com.github.benmanes.caffeine.cache.Cache;
+import com.github.benmanes.caffeine.cache.Caffeine;
+import com.github.benmanes.caffeine.cache.Expiry;
 import com.ruoyi.device.domain.api.IThingsBoardDomain;
 import com.ruoyi.device.domain.model.thingsboard.*;
 import com.ruoyi.device.domain.model.thingsboard.constants.DeviceAttributes;
@@ -27,7 +30,9 @@ import org.thingsboard.server.common.data.relation.RelationTypeGroup;
 import java.util.ArrayList;
 import java.util.List;
 import java.util.Optional;
+import java.util.Random;
 import java.util.UUID;
+import java.util.concurrent.TimeUnit;
 
 /**
  * ThingsBoard设备服务实现类
@@ -41,6 +46,10 @@ public class ThingsBoardDomainImpl implements IThingsBoardDomain {
 
     private final RestClient client;
     private final int pageSize;
+    private final Random random = new Random();
+
+    private final Cache<String, AttributeMap> attributesCache;
+    private final Cache<String, TelemetryMap> telemetryCache;
 
     /**
      * 构造函数 - Spring 会自动装配
@@ -51,6 +60,48 @@ public class ThingsBoardDomainImpl implements IThingsBoardDomain {
                                   @Value("${thingsboard.page-size:10}") int pageSize) {
         this.client = clientManager.getClient();
         this.pageSize = pageSize;
+
+        this.attributesCache = Caffeine.newBuilder()
+                .expireAfter(new Expiry<String, AttributeMap>() {
+                    @Override
+                    public long expireAfterCreate(String key, AttributeMap value, long currentTime) {
+                        long randomSeconds = 60 + random.nextInt(61);
+                        return TimeUnit.SECONDS.toNanos(randomSeconds);
+                    }
+
+                    @Override
+                    public long expireAfterUpdate(String key, AttributeMap value, long currentTime, long currentDuration) {
+                        long randomSeconds = 60 + random.nextInt(61);
+                        return TimeUnit.SECONDS.toNanos(randomSeconds);
+                    }
+
+                    @Override
+                    public long expireAfterRead(String key, AttributeMap value, long currentTime, long currentDuration) {
+                        return currentDuration;
+                    }
+                })
+                .build();
+
+        this.telemetryCache = Caffeine.newBuilder()
+                .expireAfter(new Expiry<String, TelemetryMap>() {
+                    @Override
+                    public long expireAfterCreate(String key, TelemetryMap value, long currentTime) {
+                        long randomSeconds = 12 + random.nextInt(7);
+                        return TimeUnit.SECONDS.toNanos(randomSeconds);
+                    }
+
+                    @Override
+                    public long expireAfterUpdate(String key, TelemetryMap value, long currentTime, long currentDuration) {
+                        long randomSeconds = 12 + random.nextInt(7);
+                        return TimeUnit.SECONDS.toNanos(randomSeconds);
+                    }
+
+                    @Override
+                    public long expireAfterRead(String key, TelemetryMap value, long currentTime, long currentDuration) {
+                        return currentDuration;
+                    }
+                })
+                .build();
     }
 
     @Override
@@ -88,68 +139,66 @@ public class ThingsBoardDomainImpl implements IThingsBoardDomain {
 
     @Override
     public AttributeMap getDeviceAttributes(String deviceId) {
-        AttributeMap attributeMap = new AttributeMap();
+        return attributesCache.get(deviceId, id -> {
+            AttributeMap attributeMap = new AttributeMap();
 
-        try {
+            try {
-            DeviceId id = new DeviceId(UUID.fromString(deviceId));
+                DeviceId deviceIdObj = new DeviceId(UUID.fromString(id));
 
-            // 获取所有属性键
+                List<String> attributeKeys = client.getAttributeKeys(deviceIdObj);
-            List<String> attributeKeys = client.getAttributeKeys(id);
+                if (attributeKeys == null || attributeKeys.isEmpty()) {
-            if (attributeKeys == null || attributeKeys.isEmpty()) {
+                    log.debug("设备 {} 没有属性", id);
-                log.debug("设备 {} 没有属性", deviceId);
+                    return attributeMap;
-                return attributeMap;
+                }
+
+                List<AttributeKvEntry> attributeKvEntries = client.getAttributeKvEntries(deviceIdObj, attributeKeys);
+                if (attributeKvEntries == null || attributeKvEntries.isEmpty()) {
+                    log.debug("设备 {} 的属性值为空", id);
+                    return attributeMap;
+                }
+
+                for (AttributeKvEntry entry : attributeKvEntries) {
+                    parseAndPutAttribute(attributeMap, entry);
+                }
+
+            } catch (Exception e) {
+                log.error("获取设备属性失败: deviceId={}, error={}", id, e.getMessage(), e);
             }
 
-            // 获取属性值
+            return attributeMap;
-            List<AttributeKvEntry> attributeKvEntries = client.getAttributeKvEntries(id, attributeKeys);
+        });
-            if (attributeKvEntries == null || attributeKvEntries.isEmpty()) {
-                log.debug("设备 {} 的属性值为空", deviceId);
-                return attributeMap;
-            }
-
-            // 解析并填充到AttributeMap
-            for (AttributeKvEntry entry : attributeKvEntries) {
-                parseAndPutAttribute(attributeMap, entry);
-            }
-
-        } catch (Exception e) {
-            log.error("获取设备属性失败: deviceId={}, error={}", deviceId, e.getMessage(), e);
-        }
-
-        return attributeMap;
     }
 
     @Override
     public TelemetryMap getDeviceTelemetry(String deviceId) {
-        TelemetryMap telemetryMap = new TelemetryMap();
+        return telemetryCache.get(deviceId, id -> {
+            TelemetryMap telemetryMap = new TelemetryMap();
 
-        try {
+            try {
-            DeviceId id = new DeviceId(UUID.fromString(deviceId));
+                DeviceId deviceIdObj = new DeviceId(UUID.fromString(id));
 
-            // 获取所有遥测键
+                List<String> timeseriesKeys = client.getTimeseriesKeys(deviceIdObj);
-            List<String> timeseriesKeys = client.getTimeseriesKeys(id);
+                if (timeseriesKeys == null || timeseriesKeys.isEmpty()) {
-            if (timeseriesKeys == null || timeseriesKeys.isEmpty()) {
+                    log.debug("设备 {} 没有遥测数据", id);
-                log.debug("设备 {} 没有遥测数据", deviceId);
+                    return telemetryMap;
-                return telemetryMap;
+                }
+
+                List<TsKvEntry> latestTimeseries = client.getLatestTimeseries(deviceIdObj, timeseriesKeys);
+                if (latestTimeseries == null || latestTimeseries.isEmpty()) {
+                    log.debug("设备 {} 的遥测数据为空", id);
+                    return telemetryMap;
+                }
+
+                for (TsKvEntry entry : latestTimeseries) {
+                    parseAndPutTelemetry(telemetryMap, entry);
+                }
+
+            } catch (Exception e) {
+                log.error("获取设备遥测数据失败: deviceId={}, error={}", id, e.getMessage(), e);
             }
 
-            // 获取最新的遥测数据
+            return telemetryMap;
-            List<TsKvEntry> latestTimeseries = client.getLatestTimeseries(id, timeseriesKeys);
+        });
-            if (latestTimeseries == null || latestTimeseries.isEmpty()) {
-                log.debug("设备 {} 的遥测数据为空", deviceId);
-                return telemetryMap;
-            }
-
-            // 解析并填充到TelemetryMap
-            for (TsKvEntry entry : latestTimeseries) {
-                parseAndPutTelemetry(telemetryMap, entry);
-            }
-
-        } catch (Exception e) {
-            log.error("获取设备遥测数据失败: deviceId={}, error={}", deviceId, e.getMessage(), e);
-        }
-
-        return telemetryMap;
     }