--- /dev/null
+type t
+
+val create : unit -> t
+
+val update
+ : t
+ -> node : string
+ -> modul : string
+ -> key : (string list)
+ -> value : string
+ -> time : Khatus_time.t
+ -> unit
+
+val update_if_data : t -> msg:Khatus_msg.t -> time:Khatus_time.t -> unit
+
+val dump : t -> node:string -> modul:string -> oc:out_channel -> unit