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{
  "combiner": "OR",
  "conditions": [
    {
      "conditionAbsent": {
        "aggregations": [
          {
            "alignmentPeriod": "60s",
            "crossSeriesReducer": "REDUCE_PERCENTILE_50",
            "perSeriesAligner": "ALIGN_DELTA"

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/**
 * Copyright 2017, Google, Inc.
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *    http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,

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App Engine Python 2.7 with Threads

Demo os App Engine Python 2.7 with Background thread joined after writing response. Deploy to App Engine with the command:

gcloud app deploy

Browse to the app

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import math
"""Estimates the value of pi

Uses the secant of successivly smaller slices of a unit circle
as an estimate of the circumference
"""

# Initial value is the hypotenuse of a quarter of a circle
# 2pi ~ 4 * srt(2)
# pi ~ 2 * sqrt(2)

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How to debug an unresponsive App Engine Flex app

You can debug an unhealthy app using Google Cloud Logging and other GCP tools even if the app has become unresponsive. A test app is provided that simulates the problem in an experiment for the purpose of explaining the debugging process with App Engine Flex.

Prerequisites:

1. GCP Project with billing enabled
2. Google Cloud SDK installed