feat(service): 为主题操作增加 Redis 缓存同步刷新

在新增、更新、删除主题时，按风格维度刷新 Redis 缓存，保持缓存与数据库一致，提升读取性能。

keyboard-server/src/main/java/com/yolo/keyboard/service/themes/KeyboardThemesServiceImpl.java

@@ -5,21 +5,18 @@ import com.yolo.keyboard.controller.admin.themes.vo.KeyboardThemesPageReqVO;
 import com.yolo.keyboard.controller.admin.themes.vo.KeyboardThemesSaveReqVO;
 import com.yolo.keyboard.dal.dataobject.themes.KeyboardThemesDO;
 import com.yolo.keyboard.dal.mysql.themes.KeyboardThemesMapper;
-import org.springframework.stereotype.Service;
-import jakarta.annotation.Resource;
-import org.springframework.validation.annotation.Validated;
-import org.springframework.transaction.annotation.Transactional;
-
-import java.util.*;
-
 import com.yolo.keyboard.framework.common.pojo.PageResult;
-import com.yolo.keyboard.framework.common.pojo.PageParam;
 import com.yolo.keyboard.framework.common.util.object.BeanUtils;
+import jakarta.annotation.Resource;
+import org.springframework.data.redis.core.RedisTemplate;
+import org.springframework.stereotype.Service;
+import org.springframework.validation.annotation.Validated;
 
+import java.util.HashSet;
+import java.util.List;
+import java.util.Set;
 
 import static com.yolo.keyboard.framework.common.exception.util.ServiceExceptionUtil.exception;
-import static com.yolo.keyboard.framework.common.util.collection.CollectionUtils.convertList;
-import static com.yolo.keyboard.framework.common.util.collection.CollectionUtils.diffList;
 import static com.yolo.keyboard.module.infra.enums.ErrorCodeConstants.THEMES_NOT_EXISTS;
 
 /**
@@ -31,15 +28,25 @@ import static com.yolo.keyboard.module.infra.enums.ErrorCodeConstants.THEMES_NOT
 @Validated
 public class KeyboardThemesServiceImpl implements KeyboardThemesService {
 
+    private static final String THEME_STYLE_KEY_PREFIX = "theme:style:";
+    private static final String THEME_STYLE_ALL_KEY = "theme:style:all";
+    private static final Long ALL_STYLE_ID = 9999L;
+
     @Resource
     private KeyboardThemesMapper themesMapper;
 
+    @Resource
+    private RedisTemplate<String, Object> redisTemplate;
+
     @Override
     public Long createThemes(KeyboardThemesSaveReqVO createReqVO) {
         // 插入
         KeyboardThemesDO themes = BeanUtils.toBean(createReqVO, KeyboardThemesDO.class);
         themesMapper.insert(themes);
 
+        // 同步更新 Redis 缓存
+        refreshThemeStyleCache(themes.getThemeStyle());
+
         // 返回
         return themes.getId();
     }
@@ -47,25 +54,57 @@ public class KeyboardThemesServiceImpl implements KeyboardThemesService {
     @Override
     public void updateThemes(KeyboardThemesSaveReqVO updateReqVO) {
         // 校验存在
+        KeyboardThemesDO oldTheme = themesMapper.selectById(updateReqVO.getId());
         validateThemesExists(updateReqVO.getId());
+
         // 更新
         KeyboardThemesDO updateObj = BeanUtils.toBean(updateReqVO, KeyboardThemesDO.class);
         themesMapper.updateById(updateObj);
+
+        // 同步更新 Redis 缓存（如果风格变更，需要刷新新旧两个风格的缓存）
+        refreshThemeStyleCache(updateReqVO.getThemeStyle());
+        if (oldTheme != null && oldTheme.getThemeStyle() != null
+                && !oldTheme.getThemeStyle().equals(updateReqVO.getThemeStyle())) {
+            refreshThemeStyleCache(oldTheme.getThemeStyle());
+        }
     }
 
     @Override
     public void deleteThemes(Long id) {
         // 校验存在
+        KeyboardThemesDO theme = themesMapper.selectById(id);
         validateThemesExists(id);
+
         // 删除
         themesMapper.deleteById(id);
+
+        // 同步更新 Redis 缓存
+        if (theme != null && theme.getThemeStyle() != null) {
+            refreshThemeStyleCache(theme.getThemeStyle());
+        }
     }
 
     @Override
-        public void deleteThemesListByIds(List<Long> ids) {
+    public void deleteThemesListByIds(List<Long> ids) {
+        // 获取要删除的主题列表，记录其风格
+        List<KeyboardThemesDO> themes = themesMapper.selectBatchIds(ids);
+        Set<Long> styleIds = new HashSet<>();
+        if (CollUtil.isNotEmpty(themes)) {
+            for (KeyboardThemesDO theme : themes) {
+                if (theme.getThemeStyle() != null) {
+                    styleIds.add(theme.getThemeStyle());
+                }
+            }
+        }
+
         // 删除
         themesMapper.deleteByIds(ids);
+
+        // 同步更新 Redis 缓存
+        for (Long styleId : styleIds) {
+            refreshThemeStyleCache(styleId);
         }
+    }
 
 
     private void validateThemesExists(Long id) {
@@ -84,4 +123,32 @@ public class KeyboardThemesServiceImpl implements KeyboardThemesService {
         return themesMapper.selectPage(pageReqVO);
     }
 
+    /**
+     * 刷新主题风格缓存
+     *
+     * @param styleId 风格ID
+     */
+    private void refreshThemeStyleCache(Long styleId) {
+        if (styleId == null) {
+            return;
+        }
+
+        // 1. 刷新指定风格的缓存
+        String styleKey = THEME_STYLE_KEY_PREFIX + styleId;
+        List<KeyboardThemesDO> themesByStyle = themesMapper.selectList(KeyboardThemesDO::getThemeStyle, styleId);
+        if (CollUtil.isNotEmpty(themesByStyle)) {
+            redisTemplate.opsForValue().set(styleKey, themesByStyle);
+        } else {
+            redisTemplate.delete(styleKey);
+        }
+
+        // 2. 刷新全部主题缓存（theme:style:all）
+        List<KeyboardThemesDO> allThemes = themesMapper.selectList();
+        if (CollUtil.isNotEmpty(allThemes)) {
+            redisTemplate.opsForValue().set(THEME_STYLE_ALL_KEY, allThemes);
+        } else {
+            redisTemplate.delete(THEME_STYLE_ALL_KEY);
+        }
+    }
+
 }