Rate Guardian

keep your server calm down

Requirements

• php 7.3+
• yac 2.0.3+

Installation

composer require hi-man/rateguardian

Usage

step 1 : initialize guardian

RateGuardian::getInstance()->guardianOn($key, $total, $ttl)

• $key the unique guardian key, such as api pathname, not longer than 41 characters
• $ttl in seconds, a counter will be increased in this period
• $total the max counter value allowd in $ttl second

step 2 : guard api with guardian key

RateGuardian::getInstance()->guard($key);

• a false value indicates the api is overloaded, application should handle this situation instead of providing service
• return value
  • return true if counter less than $total
  • return true if counter equals $total
  • return true if $key does not be registered with guardianOn
  • otherwise return false

step 3 : clear guardian

RateGuardian::getInstance()->guardianOff($key);

• restart php-fpm or php script also cleared guardian setting

optional: get guardian info

RateGuardian::getInstance()->show($key);

• return a array of guardian info
  • total the value provided by guardianOn
  • ttl the value provided by guardianOn
  • expired unix timestamp that calculating periods ended
  • current current counter value