diff --git a/colddb.lua b/colddb.lua
index 1acc842..75a89b6 100644
--- a/colddb.lua
+++ b/colddb.lua
@@ -213,8 +213,13 @@ local function delete_lines_func_end(args)
 		args.file:seek("set")
 		args.file:write(string.format("%i",args.count))
 		args.file:close()
-		os.remove(args.oldfile)
-		os.rename(args.copyfile, args.oldfile)
+		if args.count < 1 then
+			os.remove(args.oldfile)
+			os.remove(args.copyfile)
+		else
+			os.remove(args.oldfile)
+			os.rename(args.copyfile, args.oldfile)
+		end
 		for i,l in pairs(args.removedlist) do
 			db.indexes_pool[cs].deleted_items[i] = nil
 		end
@@ -440,10 +445,6 @@ function colddb.iterate_index_table(db,begin_func,func_on_iterate,end_func,args,
 		-- Get count
 		fl:seek("set")
 		local c = tonumber(fl:read("*l"))
-		if c < 1 then
-			-- If theres nothing to index then return
-			return false
-		end
 		if not args then
 			args = {}
 		end
@@ -455,6 +456,12 @@ function colddb.iterate_index_table(db,begin_func,func_on_iterate,end_func,args,
 				args = a
 			end
 		end
+		if c < 1 then
+			-- If theres nothing to index then return
+			end_func(args)
+			db.indexes_pool[cs].iterating = false
+			return false
+		end
 		-- Start iterating the index table
 		iterate(db,func_on_iterate,end_func,c,cs,args)
 	elseif f and f.file then
@@ -537,7 +544,26 @@ function colddb.set_key(db,name,tag_name)
 end
 
 function colddb.get(db,name,tag_name,callback)
-	extended_api.Async.queue_task(db.async_pool,function() 
+	if callback then
+		extended_api.Async.queue_task(db.async_pool,function() 
+			local t = ""
+			if tag_name then
+				t = colddb.get_tag(db,tag_name)
+			end
+			local cs = string.format("%s%s",t,name)
+			local pm = db.mem_pool[cs]
+			if pm then
+				return pm.mem
+			else
+				local _table = colddb.load_table(db,name,tag_name)
+				if _table then
+					load_into_mem(db,name,_table,tag_name)
+					return _table
+				end
+			end
+			return nil
+		end,callback)
+	else
 		local t = ""
 		if tag_name then
 			t = colddb.get_tag(db,tag_name)
@@ -554,11 +580,30 @@ function colddb.get(db,name,tag_name,callback)
 			end
 		end
 		return nil
-	end,callback)
+	end
 end
 
 function colddb.get_key(db,name,tag_name,callback)
-	extended_api.Async.queue_task(db.async_pool,function() 
+	if callback then
+		extended_api.Async.queue_task(db.async_pool,function() 
+			local t = ""
+			if tag_name then
+				t = colddb.get_tag(db,tag_name)
+			end
+			local cs = string.format("%s%s",t,name)
+			local pm = db.mem_pool[cs]
+			if pm then
+				return true
+			else
+				local bool = colddb.load_key(db,name,tag_name)
+				if bool then
+					load_into_mem(db,name,bool,tag_name)
+					return bool
+				end
+			end
+			return nil
+		end,callback)
+	else
 		local t = ""
 		if tag_name then
 			t = colddb.get_tag(db,tag_name)
@@ -575,7 +620,7 @@ function colddb.get_key(db,name,tag_name,callback)
 			end
 		end
 		return nil
-	end,callback)
+	end
 end
 
 function colddb.remove(db,name,tag_name)