add a sleep of 30 sec after each

daily_papers_sync.py

@@ -19,6 +19,7 @@ from __future__ import annotations
 
 import os
 import re
+import time
 from datetime import datetime, timedelta, timezone
 from typing import Any, Optional
 from urllib.parse import urlparse
@@ -226,6 +227,7 @@ def main() -> None:
                 stats["indexed"] += 1
                 just_indexed = True
                 print(f"INDEXED: {arxiv_id}")
+                time.sleep(30)
             else:
                 stats["not_found"] += 1
                 print(f"SKIP: {arxiv_id} - could not index")