gRPC memory leak sample application for GAE flexible environment

app.yaml

env: flex
service: protobuf
runtime: php

manual_scaling:
  instances: 1

runtime_config:
  document_root: web

resources:
  cpu: 1
  memory_gb: 1

health_check:
  check_interval_sec: 5

composer.json

{
    "name": "grpc-memoryleak",
    "type": "project",
    "require": {
        "google/cloud": "^0.49",
        "google/protobuf": "^3.5",
        "ext-grpc": "*",
        "php": "7.1.*"
    }
}

index.php

<?php
# this file should be web/index.php
require_once '../vendor/autoload.php';

use Google\Cloud\Logging\LoggingClient;

$loggingClient = new LoggingClient();

echo 'Hello World!';

nginx-app.conf

location = /_ah/health {
    try_files $uri /index.php$is_args$args;
}

php.ini

zend_extension=opcache.so
opcache.enable=1
extension=grpc.so
;extension=protobuf.so
realpath_cache_size=4096k
realpath_cache_ttl=7200
opcache.max_accelerated_files=10000
;memory_limit=512M