fixing dashboard

src/database/questdb_client.py

@@ -10,36 +10,50 @@ class DatabaseClient:
         self.url = f"http://{host}:{port}/write"
         self.auth = (user, password) if user and password else None
 
-    def save_trades(self, trades: List[Trade]):
+    def save_trades(self, trades: List[Trade], batch_size: int = 50000):
         if not trades:
             return
 
-        lines = []
-        for trade in trades:
-            # Clean symbols for ILP
-            symbol = trade.symbol.replace(" ", "\\ ").replace(",", "\\,")
-            exchange = trade.exchange
+        total_trades = len(trades)
+        print(f"Saving {total_trades} trades to QuestDB in batches of {batch_size}...")
         
-            line = f"trades,exchange={exchange},symbol={symbol},isin={trade.isin} " \
-                   f"price={trade.price},quantity={trade.quantity} " \
-                   f"{int(trade.timestamp.timestamp() * 1e9)}"
-            lines.append(line)
+        for i in range(0, total_trades, batch_size):
+            batch = trades[i:i + batch_size]
+            lines = []
+            for trade in batch:
+                # Clean symbols for ILP
+                try:
+                    symbol = trade.symbol.replace(" ", "\\ ").replace(",", "\\,")
+                    exchange = trade.exchange
                     
-        payload = "\n".join(lines) + "\n"
+                    line = f"trades,exchange={exchange},symbol={symbol},isin={trade.isin} " \
+                           f"price={trade.price},quantity={trade.quantity} " \
+                           f"{int(trade.timestamp.timestamp() * 1e9)}"
+                    lines.append(line)
+                except Exception as e:
+                    print(f"Error formating trade {trade}: {e}")
+                    continue
 
-        try:
-            response = requests.post(
-                self.url, 
-                data=payload, 
-                params={'precision': 'ns'},
-                auth=self.auth
-            )
-            if response.status_code not in [204, 200]:
-                print(f"Error saving to QuestDB: {response.text}")
-        except Exception as e:
-            print(f"Could not connect to QuestDB at {self.url}: {e}")
-            # Fallback: print to console or save to file
-            self._fallback_save(trades)
+            if not lines:
+                continue
+
+            payload = "\n".join(lines) + "\n"
+            
+            try:
+                response = requests.post(
+                    self.url, 
+                    data=payload, 
+                    params={'precision': 'ns'},
+                    auth=self.auth
+                )
+                if response.status_code not in [204, 200]:
+                    print(f"Error saving batch {i//batch_size + 1} to QuestDB: {response.text}")
+                else:
+                    print(f"Saved batch {i//batch_size + 1} ({len(batch)} trades)")
+            except Exception as e:
+                print(f"Could not connect to QuestDB at {self.url}: {e}")
+                # Fallback: print to console or save to file
+                self._fallback_save(batch)
 
     def _fallback_save(self, trades: List[Trade]):
         # Just log to a file for now if QuestDB is not available