smt cache config

config-center-server/src/main/resources/smart-monitor/dev/application.properties

@@ -47,6 +47,8 @@ com.qmth.redis.host=192.168.10.30
 com.qmth.redis.port=6379
 com.qmth.redis.password=examcloud
 #com.qmth.redis.db=11
+com.qmth.cache.expireAfterWrite=30m
+com.qmth.cache.allowNullValue=false
 #
 # ********** spring cloud config **********
 #