Improved cold start times in Google App Engine running Django in the Python 3.7 default environment

I'm using a Django-based web app in Google App Engine under the Python 3.7 default environment. When you use the app, the requirements usually take about 500 ms, which is perfectly acceptable. However, the logs show that the Google App Engine instance shuts down if the app has not been accessed for some time (a few minutes). Gunicorn will need to be reloaded on the next request and will take about 20 seconds.

I can not let users wait 20 seconds before loading the page. When testing in my local setup, the server takes a few seconds to load environment variables, and then the debug server loads almost immediately.

I do not think there is a problem with my code because after the "cold start" everything is running fast and the requests are not waiting for a database read.

What are the options for optimizing Django coldstarts in Google App Engine?

So far I have increased the instance class to F4 and specified the number of Gunicorn workers according to this guide. I can theoretically switch to F4_1G, but that's the highest available instance, and it does not seem to tackle the cold start problem.

The only other thing I can think of that could slow the instance down is that my app.yaml has 32 environment variables set up (mainly API credentials). Could this be the main reason for the long start-up times? If so, is there a safe alternative to providing API credentials for Django without using environment variables?

Many Thanks

3 i 2012, rm

BlackHatKings: proxy lists
Posted by: ThomasLound
Post Time: June 30, 2019 at 1:53 pm.

Error installing Python 3.7 on Windows 10

I have upgraded my Python 2.7 to Python 3.7 on my Windows 10 computer, but the installation does not work. I tried both the web installer and the embeddable zip file. Although I have administrator privileges, the installation aborts prematurely at the following prompt:

"One or more problems caused the setup to fail. Resolve the issues and try the setup again. For more information, see the log file.

0x80070002 – The system can not find the specified file."

I can not figure out what's wrong, even though Python 3.7 is installed on another computer. Although the log file is too long to be released, here is a snippet of it that may be relevant (since it's the location of the first error message).

"Error 0x80070002: MSI package could not be installed."

Web applications – 502 Server errors when using the Django framework and running under Python 3.7

Has anyone here worked with Google App Engine to deploy a web app written with Django that runs on Python 3.7? We received a 502 server error after trying many different combinations for our entry point. We suspect that this is the problem as our protocol states that the app can not be opened. We have no ideas at the moment, so we are grateful for any guidance.

Installation – Python 3.7 with Tensorflow failed. What should I do?

My environment list:

  1. Python 3.7 on Windows 10
  2. pip install tensorflow from Anaconda.
    My Tensorflow version is Tensorflow-1.13.1

  3. I installed Keras and OpenCV Python using the anaconda prompt
    (pip install xxx).

Here is my code:

import os
Import numpy as np
import pandas as pd
Import as sns seaborn
import matplotlib.pyplot as plt
import from PIL image
Import Glob
import cv2
from sklearn.model_selection import train_test_split
from keras.layers import dropout, dense
from keras.models import Sequential, load_model
from keras.layers.normalization Import BatchNormalization
from keras.applications import VGG16
import from sklearn.metrics precision_score, confusion_matrix

human_expression = glob.glob ("E: / expression / sad / *");
print ("Number of images in sad emotion:" + str (len (human_expression)));

When I wrote some Python codes with PyCharm. I can not create the project properly.
The problems are below:

Use TensorFlow backend. Traceback (last call last): file
"D:  Anaconda3  lib  site-packages  tensorflow  python  pywrap_tensorflow.py",
Line 58, in 
    from tensorflow.python.pywrap_tensorflow_internal import * file "D:  Anaconda3  lib  site-packages  tensorflow  python  pywrap_tensorflow_internal.py",
Line 28, in 
    _pywrap_tensorflow_internal = swig_import_helper () file "D:  Anaconda3  lib  site-packages  tensorflow  python  pywrap_tensorflow_internal.py",
Line 24 in swig_import_helper
_mod = imp.load_module ("_pywrap_tensorflow_internal", fp, pathname, description) File "D:  Anaconda3  lib  imp.py", line 242, in
load_module
Return load_dynamic (name, filename, file) D:  Anaconda3  lib  imp.py file, line 342, in load_dynamic
return _load (spec) ImportError: DLL loading failed: 找不到: 的 模块 模块

While handling the exception above, another exception occurred:

Traceback (last call last): file "E: /PythonProject/Test.py",
Line 10, in 
    from keras.layers import dropout, density file "D:  Anaconda3  lib  site-packages  keras  __ init__.py", line 3, in

    from . import utils file "D:  Anaconda3  lib  site-packages  keras  utils  __ init__.py", line 6, in

    from . Import the file conv_utils "D:  Anaconda3  lib  site-packages  keras  utils  conv_utils.py", line 9, into

    from .. import the backend as a K-file "D:  Anaconda3  lib  site-packages  keras  backend  __ init__.py", line 89,
in the 
    import from .tensorflow_backend * file "D:  Anaconda3  lib  site-packages  keras  backend  tensorflow_backend.py",
Line 5, in 
    tensorflow as tf import file "D:  Anaconda3  lib  site-packages  tensorflow  __ init__.py", line 24, in

    from tensorflow.python import pywrap_tensorflow # pylint: disable = unused-import File
"D:  Anaconda3  lib  site-packages  tensorflow  python  __ init__.py", line
49, in 
    from tensorflow.python import pywrap_tensorflow file "D:  Anaconda3  lib  site-packages  tensorflow  python  pywrap_tensorflow.py",
Line 74, in 
    raise ImportError (msg) ImportError: Traceback (last call last): File
"D:  Anaconda3  lib  site-packages  tensorflow  python  pywrap_tensorflow.py",
Line 58, in 
    from tensorflow.python.pywrap_tensorflow_internal import * file "D:  Anaconda3  lib  site-packages  tensorflow  python  pywrap_tensorflow_internal.py",
Line 28, in 
    _pywrap_tensorflow_internal = swig_import_helper () file "D:  Anaconda3  lib  site-packages  tensorflow  python  pywrap_tensorflow_internal.py",
Line 24 in swig_import_helper
_mod = imp.load_module ("_pywrap_tensorflow_internal", fp, pathname, description) File "D:  Anaconda3  lib  imp.py", line 242, in
load_module
Return load_dynamic (name, filename, file) D:  Anaconda3  lib  imp.py file, line 342, in load_dynamic
return _load (spec) ImportError: DLL loading failed: 找不到: 的 模块 模块


Loading the native TensorFlow runtime failed.

See https://www.tensorflow.org/install/errors

for a few common reasons and solutions. Include the entire stack trace
above this error message if you ask for help.

Operation terminated with exit code 1

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