fewer workers better responsiveness

Dockerfile

@@ -15,5 +15,5 @@ COPY . .
 # Expose the default Spaces port
 ENV PORT 7860
 
-# Use Gunicorn to run the Dash app with 2 workers, 2 threads
-CMD gunicorn app:server --workers 2 --threads 2 -b 0.0.0.0:$PORT
+# Use Gunicorn to run the Dash app with 1 worker, 4 threads on HF toaster
+CMD gunicorn app:server --workers 1 --threads 4 -b 0.0.0.0:$PORT

app.ipynb

@@ -33,7 +33,7 @@
        "        "
       ],
       "text/plain": [
-       "<IPython.lib.display.IFrame at 0x13f63e960>"
+       "<IPython.lib.display.IFrame at 0x11d4d3e60>"
       ]
      },
      "metadata": {},

src/prices.py

@@ -49,11 +49,10 @@ class Prices:
         ).sum()
 
     def update_tickers(self, tickers):
-        selected_tickers = list(tickers)
         for ticker in self.tickers[:]:
-            if ticker not in selected_tickers:
+            if ticker not in tickers:
                 self.remove_ticker(ticker)
-        for ticker in selected_tickers:
+        for ticker in tickers:
             if ticker not in self.tickers:
                 self.add_ticker(ticker)