Fit a lot of encodings for text file. (#458)

### What problem does this PR solve?

#384

### Type of change

- [x] Performance Improvement

api/apps/api_app.py

@@ -105,7 +105,7 @@ def stats():
         res = {
             "pv": [(o["dt"], o["pv"]) for o in objs],
             "uv": [(o["dt"], o["uv"]) for o in objs],
-            "speed": [(o["dt"], float(o["tokens"])/float(o["duration"])) for o in objs],
+            "speed": [(o["dt"], float(o["tokens"])/(float(o["duration"]+0.1))) for o in objs],
             "tokens": [(o["dt"], float(o["tokens"])/1000.) for o in objs],
             "round": [(o["dt"], o["round"]) for o in objs],
             "thumb_up": [(o["dt"], o["thumb_up"]) for o in objs]
@@ -176,7 +176,6 @@ def completion():
         conv.reference.append(ans["reference"])
         conv.message.append({"role": "assistant", "content": ans["answer"]})
         API4ConversationService.append_message(conv.id, conv.to_dict())
-        APITokenService.APITokenService(token)
         return get_json_result(data=ans)
     except Exception as e:
         return server_error_response(e)

api/apps/user_app.py

@@ -14,6 +14,7 @@
 #  limitations under the License.
 #
 import re
+from datetime import datetime
 
 from flask import request, session, redirect
 from werkzeug.security import generate_password_hash, check_password_hash
@@ -22,7 +23,7 @@ from flask_login import login_required, current_user, login_user, logout_user
 from api.db.db_models import TenantLLM
 from api.db.services.llm_service import TenantLLMService, LLMService
 from api.utils.api_utils import server_error_response, validate_request
-from api.utils import get_uuid, get_format_time, decrypt, download_img
+from api.utils import get_uuid, get_format_time, decrypt, download_img, current_timestamp, datetime_format
 from api.db import UserTenantRole, LLMType
 from api.settings import RetCode, GITHUB_OAUTH, CHAT_MDL, EMBEDDING_MDL, ASR_MDL, IMAGE2TEXT_MDL, PARSERS, API_KEY, \
     LLM_FACTORY, LLM_BASE_URL
@@ -56,6 +57,8 @@ def login():
         response_data = user.to_json()
         user.access_token = get_uuid()
         login_user(user)
+        user.update_time = current_timestamp(),
+        user.update_date = datetime_format(datetime.now()),
         user.save()
         msg = "Welcome back!"
         return cors_reponse(data=response_data, auth=user.get_id(), retmsg=msg)