동시에 업로드할 수 있는 파일의 메모리 용량을 제한하여 메모리 부족으로 인해 발생하던 크래시 해결

src/lib/modules/scheduler.ts

@@ -0,0 +1,41 @@
+export class Scheduler<T = void> {
+  private tasks = 0;
+  private memoryUsage = 0;
+  private queue: (() => void)[] = [];
+
+  constructor(public memoryLimit = 100 * 1024 * 1024 /* 100 MiB */) {}
+
+  private next() {
+    if (this.memoryUsage < this.memoryLimit) {
+      this.queue.shift()?.();
+    }
+  }
+
+  async schedule(estimateMemoryUsage: () => Promise<number>, task: () => Promise<T>) {
+    if (this.tasks++ > 0) {
+      await new Promise<void>((resolve) => {
+        this.queue.push(resolve);
+      });
+    }
+
+    while (this.memoryUsage >= this.memoryLimit) {
+      await new Promise<void>((resolve) => {
+        this.queue.unshift(resolve);
+      });
+    }
+
+    let taskMemoryUsage = 0;
+
+    try {
+      taskMemoryUsage = await estimateMemoryUsage();
+      this.memoryUsage += taskMemoryUsage;
+      this.next();
+
+      return await task();
+    } finally {
+      this.tasks--;
+      this.memoryUsage -= taskMemoryUsage;
+      this.next();
+    }
+  }
+}