diff --git a/src/main/java/net/lamgc/cgj/bot/BotCommandProcess.java b/src/main/java/net/lamgc/cgj/bot/BotCommandProcess.java
index b7bca5e..5c6b711 100644
--- a/src/main/java/net/lamgc/cgj/bot/BotCommandProcess.java
+++ b/src/main/java/net/lamgc/cgj/bot/BotCommandProcess.java
@@ -100,7 +100,7 @@ public class BotCommandProcess {
                 return "阅览禁止：该作品已被封印！！";
             }
 
-            JsonObject illustPreLoadData = CacheStoreCentral.getIllustPreLoadData(illustId, false);
+            JsonObject illustPreLoadData = CacheStoreCentral.getCentral().getIllustPreLoadData(illustId, false);
             // 在 Java 6 开始, 编译器会将用'+'进行的字符串拼接将自动转换成StringBuilder拼接
             return "色图姬帮你了解了这个作品的信息！\n" + "---------------- 作品信息 ----------------" +
                     "\n作品Id: " + illustId +
@@ -114,7 +114,7 @@ public class BotCommandProcess {
                     "\n页数：" + illustPreLoadData.get(PreLoadDataComparator.Attribute.PAGE.attrName).getAsInt() + "页" +
                     "\n作品链接：" + artworksLink(fromGroup, illustId) + "\n" +
                     "---------------- 作品图片 ----------------\n" +
-                    CacheStoreCentral.getImageById(fromGroup, illustId, PageQuality.REGULAR, 1) + "\n" +
+                    CacheStoreCentral.getCentral().getImageById(fromGroup, illustId, PageQuality.REGULAR, 1) + "\n" +
                     "使用 \".cgj image -id " +
                     illustId +
                     "\" 获取原图。\n如有不当作品，可使用\".cgj report -id " +
@@ -209,7 +209,7 @@ public class BotCommandProcess {
                 log.warn("配置项 {} 的参数值格式有误!", imageLimitPropertyKey);
             }
 
-            List<JsonObject> rankingInfoList = CacheStoreCentral
+            List<JsonObject> rankingInfoList = CacheStoreCentral.getCentral()
                     .getRankingInfoByCache(type, mode, queryDate, 1, Math.max(0, itemLimit), false);
             if(rankingInfoList.isEmpty()) {
                 return "无法查询排行榜，可能排行榜尚未更新。";
@@ -228,7 +228,7 @@ public class BotCommandProcess {
                         .append(pagesCount).append("p.\n");
                 if (index <= imageLimit) {
                     resultBuilder
-                            .append(CacheStoreCentral
+                            .append(CacheStoreCentral.getCentral()
                                     .getImageById(fromGroup, illustId, PixivDownload.PageQuality.REGULAR, 1))
                             .append("\n");
                 }
@@ -312,7 +312,7 @@ public class BotCommandProcess {
             @Argument(name = "page", force = false, defaultValue = "1") int pagesIndex
     ) throws IOException {
         log.info("正在执行搜索...");
-        JsonObject resultBody = CacheStoreCentral
+        JsonObject resultBody = CacheStoreCentral.getCentral()
                 .getSearchBody(content, type, area, includeKeywords, excludeKeywords, contentOption);
 
         StringBuilder result = new StringBuilder("内容 " + content + " 的搜索结果：\n");
@@ -365,8 +365,8 @@ public class BotCommandProcess {
                         PixivURL.getPixivRefererLink(illustId)
                 );
 
-                String imageMsg =
-                        CacheStoreCentral.getImageById(fromGroup, illustId, PixivDownload.PageQuality.REGULAR, 1);
+                String imageMsg = CacheStoreCentral.getCentral()
+                        .getImageById(fromGroup, illustId, PixivDownload.PageQuality.REGULAR, 1);
                 if (isNoSafe(illustId, SettingProperties.getProperties(fromGroup), false)) {
                     log.warn("作品Id {} 为R-18作品, 跳过.", illustId);
                     continue;
@@ -375,7 +375,8 @@ public class BotCommandProcess {
                     continue;
                 }
 
-                JsonObject illustPreLoadData = CacheStoreCentral.getIllustPreLoadData(illustId, false);
+                JsonObject illustPreLoadData = CacheStoreCentral.getCentral()
+                        .getIllustPreLoadData(illustId, false);
                 result.append(searchArea.name()).append(" (").append(count).append(" / ")
                         .append(limit).append(")\n\t作品id: ").append(illustId)
                         .append(", \n\t作者名: ").append(illustObj.get("userName").getAsString())
@@ -463,7 +464,7 @@ public class BotCommandProcess {
 
     static void clearCache() {
         log.warn("正在清除所有缓存...");
-        CacheStoreCentral.clearCache();
+        CacheStoreCentral.getCentral().clearCache();
         File imageStoreDir = new File(BotGlobal.getGlobal().getDataStoreDir(), "data/image/cgj/");
         File[] listFiles = imageStoreDir.listFiles();
         if (listFiles == null) {
@@ -484,7 +485,7 @@ public class BotCommandProcess {
             @Argument(name = "quality", force = false) PixivDownload.PageQuality quality,
             @Argument(name = "page", force = false, defaultValue = "1") int pageIndex
     ) {
-        return CacheStoreCentral.getImageById(fromGroup, illustId, quality, pageIndex);
+        return CacheStoreCentral.getCentral().getImageById(fromGroup, illustId, quality, pageIndex);
     }
 
     /**
@@ -532,7 +533,7 @@ public class BotCommandProcess {
      */
     public static boolean isNoSafe(int illustId, Properties settingProp, boolean returnRaw)
             throws IOException, NoSuchElementException {
-        JsonObject illustInfo = CacheStoreCentral.getIllustInfo(illustId, false);
+        JsonObject illustInfo = CacheStoreCentral.getCentral().getIllustInfo(illustId, false);
         JsonArray tags = illustInfo.getAsJsonArray("tags");
         boolean rawValue = illustInfo.get("xRestrict").getAsInt() != 0;
         if(!rawValue) {
diff --git a/src/main/java/net/lamgc/cgj/bot/RandomRankingArtworksSender.java b/src/main/java/net/lamgc/cgj/bot/RandomRankingArtworksSender.java
index e6fbe4c..93af1f9 100644
--- a/src/main/java/net/lamgc/cgj/bot/RandomRankingArtworksSender.java
+++ b/src/main/java/net/lamgc/cgj/bot/RandomRankingArtworksSender.java
@@ -92,7 +92,7 @@ public class RandomRankingArtworksSender extends AutoSender {
 
         int selectRanking = rankingStart + new Random().nextInt(rankingStop - rankingStart + 1);
         try {
-            List<JsonObject> rankingList = CacheStoreCentral.getRankingInfoByCache(
+            List<JsonObject> rankingList = CacheStoreCentral.getCentral().getRankingInfoByCache(
                     contentType,
                     mode,
                     queryDate,
@@ -119,7 +119,7 @@ public class RandomRankingArtworksSender extends AutoSender {
             String message = "#美图推送 - 今日排行榜 第 " + rankingInfo.get("rank").getAsInt() + " 名\n" +
                     "标题：" + rankingInfo.get("title").getAsString() + "(" + illustId + ")\n" +
                     "作者：" + rankingInfo.get("user_name").getAsString() + "\n" +
-                    CacheStoreCentral.getImageById(0, illustId, quality, 1) +
+                    CacheStoreCentral.getCentral().getImageById(0, illustId, quality, 1) +
                     "\n如有不当作品，可使用\".cgj report -id " + illustId + "\"向色图姬反馈。";
             getMessageSender().sendMessage(message);
         } catch (Exception e) {
diff --git a/src/main/java/net/lamgc/cgj/bot/cache/CacheStoreCentral.java b/src/main/java/net/lamgc/cgj/bot/cache/CacheStoreCentral.java
index 09fa4c7..84b6cd3 100644
--- a/src/main/java/net/lamgc/cgj/bot/cache/CacheStoreCentral.java
+++ b/src/main/java/net/lamgc/cgj/bot/cache/CacheStoreCentral.java
@@ -31,27 +31,44 @@ import java.util.concurrent.atomic.AtomicInteger;
 @SuppressWarnings("SynchronizationOnLocalVariableOrMethodParameter")
 public final class CacheStoreCentral {
 
-    private CacheStoreCentral() {}
-
     private final static Logger log = LoggerFactory.getLogger(CacheStoreCentral.class);
 
-    private final static Hashtable<String, File> imageCache = new Hashtable<>();
+    private static CacheStoreCentral central = new CacheStoreCentral();
 
-    private final static JsonRedisCacheStore imageChecksumCache =
+    public static CacheStoreCentral getCentral() {
+        if(central == null) {
+            initialCentral();
+        }
+        return central;
+    }
+
+    private synchronized static void initialCentral() {
+        if(central != null) {
+            return;
+        }
+
+        central = new CacheStoreCentral();
+    }
+
+    private CacheStoreCentral() {}
+
+    private final Hashtable<String, File> imageCache = new Hashtable<>();
+
+    private final CacheStore<JsonElement> imageChecksumCache =
             new JsonRedisCacheStore(BotGlobal.getGlobal().getRedisServer(),
                     "imageChecksum", BotGlobal.getGlobal().getGson());
 
     /**
      * 作品信息缓存 - 不过期
      */
-    private final static CacheStore<JsonElement> illustInfoCache =
+    private final CacheStore<JsonElement> illustInfoCache =
             new JsonRedisCacheStore(BotGlobal.getGlobal().getRedisServer(),
                     "illustInfo", BotGlobal.getGlobal().getGson());
 
     /**
      * 作品信息预加载数据 - 有效期 2 小时, 本地缓存有效期1 ± 0.25
      */
-    private final static CacheStore<JsonElement> illustPreLoadDataCache =
+    private final CacheStore<JsonElement> illustPreLoadDataCache =
             CacheStoreUtils.hashLocalHotDataStore(
                     new JsonRedisCacheStore(BotGlobal.getGlobal().getRedisServer(),
                             "illustPreLoadData", BotGlobal.getGlobal().getGson()),
@@ -59,27 +76,27 @@ public final class CacheStoreCentral {
     /**
      * 搜索内容缓存, 有效期 2 小时
      */
-    private final static CacheStore<JsonElement> searchBodyCache =
+    private final CacheStore<JsonElement> searchBodyCache =
             new JsonRedisCacheStore(BotGlobal.getGlobal().getRedisServer(),
                     "searchBody", BotGlobal.getGlobal().getGson());
 
     /**
      * 排行榜缓存, 不过期
      */
-    private final static CacheStore<List<JsonObject>> rankingCache =
+    private final CacheStore<List<JsonObject>> rankingCache =
             new JsonObjectRedisListCacheStore(BotGlobal.getGlobal().getRedisServer(),
                     "ranking", BotGlobal.getGlobal().getGson());
 
     /**
      * 作品页面下载链接缓存 - 不过期
      */
-    private final static CacheStore<List<String>> pagesCache =
+    private final CacheStore<List<String>> pagesCache =
             new StringListRedisCacheStore(BotGlobal.getGlobal().getRedisServer(), "imagePages");
 
     /**
      * 清空所有缓存
      */
-    public static void clearCache() {
+    public void clearCache() {
         imageCache.clear();
         illustInfoCache.clear();
         illustPreLoadDataCache.clear();
@@ -96,7 +113,7 @@ public final class CacheStoreCentral {
      * @param pageIndex 指定页面索引, 从1开始
      * @return 如果成功, 返回BotCode, 否则返回错误信息.
      */
-    public static String getImageById(long fromGroup, int illustId, PixivDownload.PageQuality quality, int pageIndex) {
+    public String getImageById(long fromGroup, int illustId, PixivDownload.PageQuality quality, int pageIndex) {
         log.debug("IllustId: {}, Quality: {}, PageIndex: {}", illustId, quality.name(), pageIndex);
         if(pageIndex <= 0) {
             log.warn("指定的页数不能小于或等于0: {}", pageIndex);
@@ -118,7 +135,7 @@ public final class CacheStoreCentral {
 
         List<String> pagesList;
         try {
-            pagesList = CacheStoreCentral.getIllustPages(illustId, quality, false);
+            pagesList = getIllustPages(illustId, quality, false);
         } catch (IOException e) {
             log.error("获取下载链接列表时发生异常", e);
             return "发生网络异常，无法获取图片！";
@@ -190,7 +207,7 @@ public final class CacheStoreCentral {
      * @return 返回设定好参数的BotCode
      */
     @SuppressWarnings("SameParameterValue")
-    private static BotCode getImageToBotCode(File targetFile, boolean updateCache) {
+    private BotCode getImageToBotCode(File targetFile, boolean updateCache) {
         String fileName = Objects.requireNonNull(targetFile, "targetFile is null").getName();
         BotCode code = BotCode.parse(
                 CQCode.image(BotGlobal.getGlobal().getImageStoreDir().getName() + "/" + fileName));
@@ -208,7 +225,7 @@ public final class CacheStoreCentral {
      * @throws IOException 当Http请求发生异常时抛出
      * @throws NoSuchElementException 当作品未找到时抛出
      */
-    public static JsonObject getIllustInfo(int illustId, boolean flushCache)
+    public JsonObject getIllustInfo(int illustId, boolean flushCache)
             throws IOException, NoSuchElementException {
         String illustIdStr = buildSyncKey(Integer.toString(illustId));
         JsonObject illustInfoObj = null;
@@ -236,7 +253,7 @@ public final class CacheStoreCentral {
      * @return 成功返回JsonObject对象
      * @throws IOException 当Http请求处理发生异常时抛出
      */
-    public static JsonObject getIllustPreLoadData(int illustId, boolean flushCache) throws IOException {
+    public JsonObject getIllustPreLoadData(int illustId, boolean flushCache) throws IOException {
         String illustIdStr = buildSyncKey(Integer.toString(illustId));
         JsonObject result = null;
         if (!illustPreLoadDataCache.exists(illustIdStr) || flushCache) {
@@ -272,7 +289,7 @@ public final class CacheStoreCentral {
         return result;
     }
 
-    public static List<String> getIllustPages(int illustId, PixivDownload.PageQuality quality, boolean flushCache)
+    public List<String> getIllustPages(int illustId, PixivDownload.PageQuality quality, boolean flushCache)
             throws IOException {
         String pagesSign = buildSyncKey(Integer.toString(illustId), ".", quality.name());
         List<String> result = null;
@@ -295,7 +312,7 @@ public final class CacheStoreCentral {
         return result;
     }
 
-    private final static Random expireTimeFloatRandom = new Random();
+    private final Random expireTimeFloatRandom = new Random();
     /**
      * 获取排行榜
      * @param contentType 排行榜类型
@@ -307,7 +324,7 @@ public final class CacheStoreCentral {
      * @return 成功返回有值List, 失败且无异常返回空
      * @throws IOException 获取异常时抛出
      */
-    public static List<JsonObject> getRankingInfoByCache(PixivURL.RankingContentType contentType,
+    public List<JsonObject> getRankingInfoByCache(PixivURL.RankingContentType contentType,
                                                          PixivURL.RankingMode mode,
                                                          Date queryDate, int start, int range, boolean flushCache)
             throws IOException {
@@ -363,7 +380,7 @@ public final class CacheStoreCentral {
      * @return 返回完整搜索结果
      * @throws IOException 当请求发生异常, 或接口返回异常信息时抛出.
      */
-    public static JsonObject getSearchBody(
+    public JsonObject getSearchBody(
             String content,
             String type,
             String area,
@@ -457,7 +474,7 @@ public final class CacheStoreCentral {
         return resultBody;
     }
 
-    protected static ImageChecksum getImageChecksum(int illustId, int pageIndex) {
+    protected ImageChecksum getImageChecksum(int illustId, int pageIndex) {
         String cacheKey = illustId + ":" + pageIndex;
         if(!imageChecksumCache.exists(cacheKey)) {
             return null;
@@ -466,7 +483,7 @@ public final class CacheStoreCentral {
         }
     }
 
-    protected static void setImageChecksum(ImageChecksum checksum) {
+    protected void setImageChecksum(ImageChecksum checksum) {
         String cacheKey = checksum.getIllustId() + ":" + checksum.getPage();
         imageChecksumCache.update(cacheKey, ImageChecksum.toJsonObject(checksum), 0);
     }
diff --git a/src/main/java/net/lamgc/cgj/bot/cache/ImageCacheHandler.java b/src/main/java/net/lamgc/cgj/bot/cache/ImageCacheHandler.java
index c2b092b..9cd4c26 100644
--- a/src/main/java/net/lamgc/cgj/bot/cache/ImageCacheHandler.java
+++ b/src/main/java/net/lamgc/cgj/bot/cache/ImageCacheHandler.java
@@ -80,7 +80,7 @@ public class ImageCacheHandler implements EventHandler {
                             );
                 bufferInputStream.reset();
                 Streams.copy(bufferInputStream, fileOutputStream, false);
-                CacheStoreCentral.setImageChecksum(imageChecksum);
+                CacheStoreCentral.getCentral().setImageChecksum(imageChecksum);
             } catch (IOException e) {
                 log.error("下载图片时发生异常", e);
                 throw e;
diff --git a/src/main/java/net/lamgc/cgj/bot/sort/PreLoadDataComparator.java b/src/main/java/net/lamgc/cgj/bot/sort/PreLoadDataComparator.java
index 96e805e..5b9aaa9 100644
--- a/src/main/java/net/lamgc/cgj/bot/sort/PreLoadDataComparator.java
+++ b/src/main/java/net/lamgc/cgj/bot/sort/PreLoadDataComparator.java
@@ -39,10 +39,10 @@ public class PreLoadDataComparator implements Comparator<JsonElement> {
             }
         }
         try {
-            JsonObject illustPreLoadData1 =
-                    CacheStoreCentral.getIllustPreLoadData(o1.getAsJsonObject().get("illustId").getAsInt(), false);
-            JsonObject illustPreLoadData2 =
-                    CacheStoreCentral.getIllustPreLoadData(o2.getAsJsonObject().get("illustId").getAsInt(), false);
+            JsonObject illustPreLoadData1 = CacheStoreCentral.getCentral()
+                    .getIllustPreLoadData(o1.getAsJsonObject().get("illustId").getAsInt(), false);
+            JsonObject illustPreLoadData2 = CacheStoreCentral.getCentral()
+                    .getIllustPreLoadData(o2.getAsJsonObject().get("illustId").getAsInt(), false);
             return Integer.compare(
                     illustPreLoadData2.get(attribute.attrName).getAsInt(),
                     illustPreLoadData1.get(attribute.attrName).getAsInt());