Index for queued mints and remove order by random for selecting rando…

…m mint

api/src/mutations/mint.rs

@@ -1162,7 +1162,6 @@ impl Mutation {
         let mint = CollectionMints::find()
             .filter(collection_mints::Column::CollectionId.eq(drop.collection_id))
             .filter(collection_mints::Column::CreationStatus.eq(CreationStatus::Queued))
-            .order_by(SimpleExpr::FunctionCall(Func::random()), Order::Asc)
             .one(conn)
             .await?
             .ok_or(Error::new("No Queued mint found for the drop"))?;

migration/src/lib.rs

@@ -60,6 +60,7 @@ mod m20230911_144938_make_compressed_column_optional;
 mod m20230914_154759_add_job_trackings_table;
 mod m20230915_111128_create_mints_creation_status_idx;
 mod m20230922_150621_nullable_metadata_jsons_identifier_and_uri;
+mod m20231011_202917_create_queued_mints_idx;
 
 pub struct Migrator;
 
@@ -127,6 +128,7 @@ impl MigratorTrait for Migrator {
             Box::new(m20230915_111128_create_mints_creation_status_idx::Migration),
             Box::new(m20230914_154759_add_job_trackings_table::Migration),
             Box::new(m20230922_150621_nullable_metadata_jsons_identifier_and_uri::Migration),
+            Box::new(m20231011_202917_create_queued_mints_idx::Migration),
         ]
     }
 }

migration/src/m20231011_202917_create_queued_mints_idx.rs

@@ -0,0 +1,29 @@
+use sea_orm_migration::{
+    prelude::*,
+    sea_orm::{ConnectionTrait, Statement},
+};
+
+#[derive(DeriveMigrationName)]
+pub struct Migration;
+
+#[async_trait::async_trait]
+impl MigrationTrait for Migration {
+    async fn up(&self, manager: &SchemaManager) -> Result<(), DbErr> {
+        let db = manager.get_connection();
+
+        let stmt = Statement::from_string(
+            manager.get_database_backend(),
+            r#"CREATE INDEX IF NOT EXISTS queued_mints_idx ON collection_mints(creation_status)
+            where creation_status = 'queued';"#
+                .to_string(),
+        );
+
+        db.execute(stmt).await?;
+
+        Ok(())
+    }
+
+    async fn down(&self, _manager: &SchemaManager) -> Result<(), DbErr> {
+        Ok(())
+    }
+}