diff --git a/.gitignore b/.gitignore
index 65435b5..6ac12f0 100644
--- a/.gitignore
+++ b/.gitignore
@@ -11,3 +11,4 @@ target
 config/
 __pycache__/
 res
+out/
\ No newline at end of file
diff --git a/tools/migratedb/migratedb.py b/tools/migratedb/migratedb.py
index 64e6262..c72046a 100644
--- a/tools/migratedb/migratedb.py
+++ b/tools/migratedb/migratedb.py
@@ -39,7 +39,25 @@ def scanKeys(r, key_prefix, matched_keys):
 def saveKeys(r, keys, curr_file):
     for key in keys:
         data = r.get(key)
-        curr_file.write(json.dumps({'key': key, 'data':data}) + '\n')
+        expire = r.ttl(key)
+        curr_file.write(json.dumps(
+            {
+                'cmd': 'set',
+                'key': key,
+                'data':data
+            }
+        ) + '\n')
+        curr_file.write(json.dumps(
+            {
+                'cmd': 'expire',
+                'key': key,
+                'time': expire
+            }
+        ) + '\n')
+        if expire < 0:
+            print('[ERROR] ' + key + ' ttl < 0')
+        if expire > 3600 * 24:
+            print('[ERROR] ' + key + ' ttl > 3600 * 24')
 
 def exportRedis(context, redis_conf, redis_rule_conf):
     curr_file = open(context['out_dir'] + context['channel'] + '.redis', 'w')
@@ -49,7 +67,6 @@ def exportRedis(context, redis_conf, redis_rule_conf):
                         password = conf['passwd'],
                         decode_responses = True
         )
-        print(r)
         for rule in redis_rule_conf:
             matched_keys = {}
             scanKeys(r, rule['key_prefix'], matched_keys)