diff --git a/meilisearch-http/src/routes/setting.rs b/meilisearch-http/src/routes/setting.rs
index 3ec273008..43ffb167b 100644
--- a/meilisearch-http/src/routes/setting.rs
+++ b/meilisearch-http/src/routes/setting.rs
@@ -192,20 +192,17 @@ async fn update_rules(
     path: web::Path<IndexParam>,
     body: web::Json<Option<Vec<String>>>,
 ) -> Result<HttpResponse, ResponseError> {
-    let index = data
-        .db
-        .open_index(&path.index_uid)
-        .ok_or(Error::index_not_found(&path.index_uid))?;
+    let update_id = data.get_or_create_index(&path.index_uid, |index| {
+        let settings = Settings {
+            ranking_rules: Some(body.into_inner()),
+            ..Settings::default()
+        };
 
-    let settings = Settings {
-        ranking_rules: Some(body.into_inner()),
-        ..Settings::default()
-    };
-
-    let settings = settings.to_update().map_err(Error::bad_request)?;
-    let update_id = data
-        .db
-        .update_write(|w| index.settings_update(w, settings))?;
+        let settings = settings.to_update().map_err(Error::bad_request)?;
+        Ok(data
+            .db
+            .update_write(|w| index.settings_update(w, settings))?)
+    })?;
 
     Ok(HttpResponse::Accepted().json(IndexUpdateResponse::with_id(update_id)))
 }
@@ -267,20 +264,17 @@ async fn update_distinct(
     path: web::Path<IndexParam>,
     body: web::Json<Option<String>>,
 ) -> Result<HttpResponse, ResponseError> {
-    let index = data
-        .db
-        .open_index(&path.index_uid)
-        .ok_or(Error::index_not_found(&path.index_uid))?;
+    let update_id = data.get_or_create_index(&path.index_uid, |index| {
+        let settings = Settings {
+            distinct_attribute: Some(body.into_inner()),
+            ..Settings::default()
+        };
 
-    let settings = Settings {
-        distinct_attribute: Some(body.into_inner()),
-        ..Settings::default()
-    };
-
-    let settings = settings.to_update().map_err(Error::bad_request)?;
-    let update_id = data
-        .db
-        .update_write(|w| index.settings_update(w, settings))?;
+        let settings = settings.to_update().map_err(Error::bad_request)?;
+        Ok(data
+            .db
+            .update_write(|w| index.settings_update(w, settings))?)
+    })?;
 
     Ok(HttpResponse::Accepted().json(IndexUpdateResponse::with_id(update_id)))
 }
@@ -338,21 +332,18 @@ async fn update_searchable(
     path: web::Path<IndexParam>,
     body: web::Json<Option<Vec<String>>>,
 ) -> Result<HttpResponse, ResponseError> {
-    let index = data
-        .db
-        .open_index(&path.index_uid)
-        .ok_or(Error::index_not_found(&path.index_uid))?;
+    let update_id = data.get_or_create_index(&path.index_uid, |index| {
+        let settings = Settings {
+            searchable_attributes: Some(body.into_inner()),
+            ..Settings::default()
+        };
 
-    let settings = Settings {
-        searchable_attributes: Some(body.into_inner()),
-        ..Settings::default()
-    };
+        let settings = settings.to_update().map_err(Error::bad_request)?;
 
-    let settings = settings.to_update().map_err(Error::bad_request)?;
-
-    let update_id = data
-        .db
-        .update_write(|w| index.settings_update(w, settings))?;
+        Ok(data
+            .db
+            .update_write(|w| index.settings_update(w, settings))?)
+    })?;
 
     Ok(HttpResponse::Accepted().json(IndexUpdateResponse::with_id(update_id)))
 }
@@ -412,20 +403,17 @@ async fn update_displayed(
     path: web::Path<IndexParam>,
     body: web::Json<Option<HashSet<String>>>,
 ) -> Result<HttpResponse, ResponseError> {
-    let index = data
-        .db
-        .open_index(&path.index_uid)
-        .ok_or(Error::index_not_found(&path.index_uid))?;
+    let update_id = data.get_or_create_index(&path.index_uid, |index| {
+        let settings = Settings {
+            displayed_attributes: Some(body.into_inner()),
+            ..Settings::default()
+        };
 
-    let settings = Settings {
-        displayed_attributes: Some(body.into_inner()),
-        ..Settings::default()
-    };
-
-    let settings = settings.to_update().map_err(Error::bad_request)?;
-    let update_id = data
-        .db
-        .update_write(|w| index.settings_update(w, settings))?;
+        let settings = settings.to_update().map_err(Error::bad_request)?;
+        Ok(data
+            .db
+            .update_write(|w| index.settings_update(w, settings))?)
+    })?;
 
     Ok(HttpResponse::Accepted().json(IndexUpdateResponse::with_id(update_id)))
 }
@@ -494,20 +482,17 @@ async fn update_attributes_for_faceting(
     path: web::Path<IndexParam>,
     body: web::Json<Option<Vec<String>>>,
 ) -> Result<HttpResponse, ResponseError> {
-    let index = data
-        .db
-        .open_index(&path.index_uid)
-        .ok_or(Error::index_not_found(&path.index_uid))?;
+    let update_id = data.get_or_create_index(&path.index_uid, |index| {
+        let settings = Settings {
+            attributes_for_faceting: Some(body.into_inner()),
+            ..Settings::default()
+        };
 
-    let settings = Settings {
-        attributes_for_faceting: Some(body.into_inner()),
-        ..Settings::default()
-    };
-
-    let settings = settings.to_update().map_err(Error::bad_request)?;
-    let update_id = data
-        .db
-        .update_write(|w| index.settings_update(w, settings))?;
+        let settings = settings.to_update().map_err(Error::bad_request)?;
+        Ok(data
+            .db
+            .update_write(|w| index.settings_update(w, settings))?)
+    })?;
 
     Ok(HttpResponse::Accepted().json(IndexUpdateResponse::with_id(update_id)))
 }
diff --git a/meilisearch-http/src/routes/stop_words.rs b/meilisearch-http/src/routes/stop_words.rs
index 858b91705..c757b4d14 100644
--- a/meilisearch-http/src/routes/stop_words.rs
+++ b/meilisearch-http/src/routes/stop_words.rs
@@ -39,17 +39,16 @@ async fn update(
     path: web::Path<IndexParam>,
     body: web::Json<BTreeSet<String>>,
 ) -> Result<HttpResponse, ResponseError> {
-    let index = data
-        .db
-        .open_index(&path.index_uid)
-        .ok_or(Error::index_not_found(&path.index_uid))?;
+    let update_id = data.get_or_create_index(&path.index_uid, |index| {
+        let settings = SettingsUpdate {
+            stop_words: UpdateState::Update(body.into_inner()),
+            ..SettingsUpdate::default()
+        };
 
-    let settings = SettingsUpdate {
-        stop_words: UpdateState::Update(body.into_inner()),
-        ..SettingsUpdate::default()
-    };
-
-    let update_id = data.db.update_write(|w| index.settings_update(w, settings))?;
+        Ok(data
+            .db
+            .update_write(|w| index.settings_update(w, settings))?)
+    })?;
 
     Ok(HttpResponse::Accepted().json(IndexUpdateResponse::with_id(update_id)))
 }
@@ -72,7 +71,9 @@ async fn delete(
         ..SettingsUpdate::default()
     };
 
-    let update_id = data.db.update_write(|w| index.settings_update(w, settings))?;
+    let update_id = data
+        .db
+        .update_write(|w| index.settings_update(w, settings))?;
 
     Ok(HttpResponse::Accepted().json(IndexUpdateResponse::with_id(update_id)))
 }
diff --git a/meilisearch-http/src/routes/synonym.rs b/meilisearch-http/src/routes/synonym.rs
index fd0488534..5aefaaca5 100644
--- a/meilisearch-http/src/routes/synonym.rs
+++ b/meilisearch-http/src/routes/synonym.rs
@@ -50,17 +50,16 @@ async fn update(
     path: web::Path<IndexParam>,
     body: web::Json<BTreeMap<String, Vec<String>>>,
 ) -> Result<HttpResponse, ResponseError> {
-    let index = data
-        .db
-        .open_index(&path.index_uid)
-        .ok_or(Error::index_not_found(&path.index_uid))?;
+    let update_id = data.get_or_create_index(&path.index_uid, |index| {
+        let settings = SettingsUpdate {
+            synonyms: UpdateState::Update(body.into_inner()),
+            ..SettingsUpdate::default()
+        };
 
-    let settings = SettingsUpdate {
-        synonyms: UpdateState::Update(body.into_inner()),
-        ..SettingsUpdate::default()
-    };
-
-    let update_id = data.db.update_write(|w| index.settings_update(w, settings))?;
+        Ok(data
+            .db
+            .update_write(|w| index.settings_update(w, settings))?)
+    })?;
 
     Ok(HttpResponse::Accepted().json(IndexUpdateResponse::with_id(update_id)))
 }
@@ -83,7 +82,9 @@ async fn delete(
         ..SettingsUpdate::default()
     };
 
-    let update_id = data.db.update_write(|w| index.settings_update(w, settings))?;
+    let update_id = data
+        .db
+        .update_write(|w| index.settings_update(w, settings))?;
 
     Ok(HttpResponse::Accepted().json(IndexUpdateResponse::with_id(update_id)))
 }