reduce max idle ttl to 10 seconds
diff --git a/conf/reference.conf b/conf/reference.conf
index 63bc479..d13be52 100644
--- a/conf/reference.conf
+++ b/conf/reference.conf
@@ -122,7 +122,7 @@
 
 # Future cache.
 future.cache.max.size=1000000
-future.cache.max.idle.ttl=60000
+future.cache.max.idle.ttl=10000
 
 # Counter
 redis.instances = [${host}]