Retry exception handler

ExceptionHandler.php

<?php

class ExceptionHandler {
  public static function retry(\Closure $main, ?\Closure $onFailure = null, $tries = 10) {
    $throwable = null;
    
    try {
      call_user_func($main); 
    } catch(\Throwable $throwable) {
      // i would advise catching only specfic exceptions here
      // i created a RetryException extends \Exception for this purpose
      // so i only retry instances of RetryException that are throw custom by me - allows me better control over what exceptions i retry
      $tries--;
    }
    
    if($tries == 0) {
      throw $throwable; 
    }
   
    if($onFailure instancef \Closure) {
      $onFailure($tries);
    }
    
    return self::retry($main, $onFailure, $tries);
  }
}

index.php

<?php 
include_once 'ExceptionHandler.php';

ExceptionHandler::retry(function(){
  // perform inconsistent operation here
  // examples: http request to a server that might throw 500 errors randomly
  // example2: retry db operation that sometimes might fail
  // example3: retry operations on locked resources
}, null, 5);

ExceptionHandler::retry(function(){
  // operations here
  $data = $cache->get('key');
  
  if($data)
  {
    return $data; 
  }
  $response = $http->get('http://example.com');
  $cache->set('key', $response);
  return $response;
}, function(int $tries){
  sleep(5);
  $cache->forget('key'); // on failure clear the cache
}, 5);