diff --git a/delfi.lua b/delfi.lua
new file mode 100644
index 0000000..2e5b372
--- /dev/null
+++ b/delfi.lua
@@ -0,0 +1,24 @@
+local space_no = 0
+
+function find_filters_by_regex(regex)
+    if box.cfg.replication_source == nil then error("replica api only") end
+
+    local cnt = 0
+    local t = {}
+    for tpl in box.space[space_no].index[0]:iterator(box.index.ALL) do
+
+        if string.find(tpl[1], regex) then
+            table.insert(t, tpl)
+        end
+
+        cnt = cnt + 1
+        if cnt == 1000 then
+            box.fiber.testcancel()
+            box.fiber.sleep(0)
+            cnt = 0
+        end
+
+    end
+
+    return unpack(t)
+end