fix ollama max token issue (#1489)

### What problem does this PR solve?


### Type of change

- [x] Bug Fix (non-breaking change which fixes an issue)

api/db/services/dialog_service.py

@@ -80,7 +80,7 @@ def chat(dialog, messages, stream=True, **kwargs):
         llm = TenantLLMService.query(tenant_id=dialog.tenant_id, llm_name=dialog.llm_id)
         if not llm:
             raise LookupError("LLM(%s) not found" % dialog.llm_id)
-        max_tokens = 1024
+        max_tokens = 8192
     else:
         max_tokens = llm[0].max_tokens
     kbs = KnowledgebaseService.get_by_ids(dialog.kb_ids)

api/ragflow_server.py

@@ -94,7 +94,7 @@ def update_progress():
         werkzeug_logger = logging.getLogger("werkzeug")
         for h in access_logger.handlers:
             werkzeug_logger.addHandler(h)
-        run_simple(hostname=HOST, port=HTTP_PORT, application=app, threaded=True, use_reloader=RuntimeConfig.DEBUG, use_debugger=RuntimeConfig.DEBUG)
+        run_simple(hostname=HOST, port=HTTP_PORT, application=app, processes=5, use_reloader=RuntimeConfig.DEBUG, use_debugger=RuntimeConfig.DEBUG)
     except Exception:
         traceback.print_exc()
         os.kill(os.getpid(), signal.SIGKILL)

graph/component/base.py

@@ -35,7 +35,7 @@
 class ComponentParamBase(ABC):
     def __init__(self):
         self.output_var_name = "output"
-        self.message_history_window_size = 4
+        self.message_history_window_size = 22
 
     def set_name(self, name: str):
         self._name = name