fix(server): wrap read-modify-write apis with distributed lock (#6142)

packages/backend/server/src/fundamentals/error/index.ts

@@ -1 +1,2 @@
 export * from './payment-required';
+export * from './too-many-requests';

packages/backend/server/src/fundamentals/error/too-many-requests.ts

@@ -0,0 +1,14 @@
+import { HttpException, HttpStatus } from '@nestjs/common';
+
+export class TooManyRequestsException extends HttpException {
+  constructor(desc?: string, code: string = 'Too Many Requests') {
+    super(
+      HttpException.createBody(
+        desc ?? code,
+        code,
+        HttpStatus.TOO_MANY_REQUESTS
+      ),
+      HttpStatus.TOO_MANY_REQUESTS
+    );
+  }
+}