diff --git a/migrations/2024-11-01-080726_tile_cache/up.sql b/migrations/2024-11-01-080726_tile_cache/up.sql
index 48839ae..da9b531 100644
--- a/migrations/2024-11-01-080726_tile_cache/up.sql
+++ b/migrations/2024-11-01-080726_tile_cache/up.sql
@@ -2,8 +2,8 @@
 CREATE TABLE gtfs.tile_storage (
     category smallint not null,
     z smallint not null,
-    x smallint not null,
-    y smallint not null,
+    x int not null,
+    y int not null,
     mvt_data bytea not null,
     added_time Timestamptz not null,
     
diff --git a/src/models.rs b/src/models.rs
index 384911e..65d70fd 100644
--- a/src/models.rs
+++ b/src/models.rs
@@ -418,8 +418,8 @@ pub struct IpToGeoAddr {
 pub struct TileStorage {
     pub category: i16,
     pub z: i16,
-    pub x: i16,
-    pub y: i16,
+    pub x: i32,
+    pub y: i32,
     pub mvt_data: Vec<u8>,
     pub added_time: chrono::DateTime<chrono::Utc>
 }
\ No newline at end of file
diff --git a/src/schema.rs b/src/schema.rs
index 4159ab5..3b9e508 100644
--- a/src/schema.rs
+++ b/src/schema.rs
@@ -465,8 +465,8 @@ pub mod gtfs {
         gtfs.tile_storage (category, z, x, y) {
             category -> Int2,
             z -> Int2,
-            x -> Int2,
-            y -> Int2,
+            x -> Int4,
+            y -> Int4,
             mvt_data -> Bytea,
             added_time -> Timestamptz,
         }
diff --git a/src/tile_save_and_get.rs b/src/tile_save_and_get.rs
index e69de29..4524ae4 100644
--- a/src/tile_save_and_get.rs
+++ b/src/tile_save_and_get.rs
@@ -0,0 +1,3 @@
+pub fn insert_tile(z: i16, x: i32, y: i32) {
+
+}
\ No newline at end of file