Chore: update domain alive check

Build/lib/keyed-async-mutex.ts

@@ -0,0 +1,23 @@
+const globalMap = new Map<string, Map<string, Promise<unknown>>>();
+
+export function createKeyedAsyncMutex(globalNamespaceKey: string) {
+  let map;
+  if (globalMap.has(globalNamespaceKey)) {
+    map = globalMap.get(globalNamespaceKey)!;
+  } else {
+    map = new Map();
+    globalMap.set(globalNamespaceKey, map);
+  }
+
+  return {
+    async acquire<T = unknown>(key: string, fn: () => Promise<T>) {
+      if (map.has(key)) {
+        return map.get(key);
+      }
+
+      const promise = fn();
+      map.set(key, promise);
+      return promise;
+    }
+  };
+}