fix

themis-business/src/main/java/com/qmth/themis/business/cache/ExamRecordCacheUtil.java

@@ -45,7 +45,7 @@ public class ExamRecordCacheUtil {
     }
 
     public static Integer getDurationSeconds(Long recordId) {
-        return (Integer) redisUtil.get(RedisKeyHelper.examRecordCacheKey(recordId), "surationSeconds");
+        return (Integer) redisUtil.get(RedisKeyHelper.examRecordCacheKey(recordId), "durationSeconds");
     }
 
     public static Double getObjectiveScore(Long recordId) {