diff --git a/doc/database.md b/doc/trash/database.md
similarity index 69%
rename from doc/database.md
rename to doc/trash/database.md
index 5f2245e..13e0008 100644
--- a/doc/database.md
+++ b/doc/trash/database.md
@@ -3,3 +3,5 @@ You have 2 choices for database backend:
 * [postgres](postgres.md)
 
 * [redis](redis.md)
+
+NOTE: we don't need this file no more