学员真实学习时长记录

src/main/java/xyz/playedu/api/caches/UserCanSeeCourseCache.java

@@ -25,12 +25,13 @@ public class UserCanSeeCourseCache {
     public boolean check(User user, Course course, boolean isThrow) throws ServiceException {
         boolean result;
         if (RedisUtil.exists(key(user, course))) {
-            result = "1".equals(RedisUtil.get(key(user, course)));
+            String cacheResult = (String) RedisUtil.get(key(user, course));
+            result = "1".equals(cacheResult);
         } else {
             result = userBus.canSeeCourse(user, course);
             put(user, course, result);
         }
-        if (isThrow) {
+        if (!result && isThrow) {
             throw new ServiceException("无权限观看");
         }
         return result;

src/main/java/xyz/playedu/api/caches/UserLastLearnTimeCache.java

@@ -0,0 +1,24 @@
+package xyz.playedu.api.caches;
+
+import org.springframework.stereotype.Component;
+import xyz.playedu.api.util.RedisUtil;
+
+/**
+ * @Author 杭州白书科技有限公司
+ * @create 2023/3/22 13:57
+ */
+@Component
+public class UserLastLearnTimeCache {
+
+    private final static String groupName = "user-learn-last-timestamp";
+
+    private final static int expire = 9500;//9.5s
+
+    public Long get(Integer userId) {
+        return (Long) RedisUtil.hGet(groupName, userId + "");
+    }
+
+    public void put(Integer userId, Long timestamp) {
+        RedisUtil.hSet(groupName, userId + "", timestamp);
+    }
+}