Update app.py

app.py

@@ -38,7 +38,7 @@ def download_synthesis(url):
     return response.content
 
 
-@functools.cache
+@functools.lru_cache(maxsize=100)
 def download_and_process_speech(text, voice, sr):
     uuid = start_synthesis(text, voice)
     status = "started"