Added a db index to make the schedule list page faster

There was a slow query to get the latest run for a list of schedules

Author: matt-aitken

internal-packages/database/prisma/migrations/20241106112827_task_run_add_schedule_id_created_at_index/migration.sql

@@ -0,0 +1,2 @@
+-- CreateIndex
+CREATE INDEX CONCURRENTLY IF NOT EXISTS "TaskRun_scheduleId_createdAt_idx" ON "TaskRun"("scheduleId", "createdAt" DESC);

internal-packages/database/prisma/schema.prisma

@@ -1799,6 +1799,8 @@ model TaskRun {
   @@index([parentSpanId])
   // Finding completed runs
   @@index([completedAt])
+  // Schedule list page
+  @@index([scheduleId, createdAt(sort: Desc)])
 }
 
 enum TaskRunStatus {

references/hello-world/src/trigger/schedule.ts

@@ -0,0 +1,11 @@
+import { schedules } from "@trigger.dev/sdk/v3";
+
+export const simpleSchedule = schedules.task({
+  id: "simple-schedule",
+  cron: "0 0 * * *",
+  run: async (payload, { ctx }) => {
+    return {
+      message: "Hello, world!",
+    };
+  },
+});