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Prevent server overload based on 1 minute system load average over 95%

Browse source 
https://www.php.net/sys_getloadavg
This commit is contained in:
djmaze 2020-08-08 22:33:12 +02:00
parent ba8a566c69
commit 99c86dcf3c
1 changed files with 11 additions and 4 deletions
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15
rainloop/v/0.0.0/include.php
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@ -4,6 +4,16 @@
{ {
if (!defined('APP_REQUEST_RND')) if (!defined('APP_REQUEST_RND'))
{ {
if (function_exists('sys_getloadavg')) {
$load = sys_getloadavg();
if ($load[0] > 95) {
header('HTTP/1.1 503 Service Unavailable');
header('Retry-After: 120');
exit('Mailserver too busy. Please try again later.');
}
unset($load);
}
ini_set('register_globals', 0); ini_set('register_globals', 0);
ini_set('zend.ze1_compatibility_mode', 0); ini_set('zend.ze1_compatibility_mode', 0);
@ -15,10 +25,7 @@
// "img-src https:" is allowed due to remote images in e-mails // "img-src https:" is allowed due to remote images in e-mails
define('APP_DEFAULT_CSP', "default-src 'self'; script-src 'self' 'unsafe-inline' 'unsafe-eval'; img-src 'self' data: https:; style-src 'self' 'unsafe-inline'"); define('APP_DEFAULT_CSP', "default-src 'self'; script-src 'self' 'unsafe-inline' 'unsafe-eval'; img-src 'self' data: https:; style-src 'self' 'unsafe-inline'");
if (function_exists('date_default_timezone_set')) date_default_timezone_set('UTC');
{
date_default_timezone_set('UTC');
}
$sSite = strtolower(trim(empty($_SERVER['HTTP_HOST']) ? (empty($_SERVER['SERVER_NAME']) ? '' : $_SERVER['SERVER_NAME']) : $_SERVER['HTTP_HOST'])); $sSite = strtolower(trim(empty($_SERVER['HTTP_HOST']) ? (empty($_SERVER['SERVER_NAME']) ? '' : $_SERVER['SERVER_NAME']) : $_SERVER['HTTP_HOST']));
$sSite = 'www.' === substr($sSite, 0, 4) ? substr($sSite, 4) : $sSite; $sSite = 'www.' === substr($sSite, 0, 4) ? substr($sSite, 4) : $sSite;