How to disable caching in angular?

Question

Angular

The json file is read and displayed as a table, when the json object is deleted, the list is not updated, although the variable in which json is updated. The list will be updated only if you open this json in the browser and press ctrl+f5.
Uninstall code below

deleteApp(app: any) {
    let agree = confirm(`Вы уверены что хотите удалить ${app.code}?`);
    if(agree){
      this.body = new HttpParams({
        fromObject: Object.assign(app, {action: 'delete'})
      })
      this.http.post('assets/editAppList.php', this.body, {responseType: 'text'}).subscribe(
        (response) => {
          console.log('всё хорошо');
          this.appList = JSON.parse(response)
        },
        (error) => {
          console.error(error);
        }
      );
    }
  }

in php

$app_json = 'http://logist/assets/applications.json';
    $app_list = json_decode(file_get_contents($app_json));
      for($a=0; $a<count($app_list); $a++){
        if($app_list[$a]->code==$_POST["code"]){
          array_splice($app_list, $a, 1);
        }
      }
    print_r($app_list);
    file_put_contents("applications.json", json_encode($app_list));

meta tags didn't work

<meta http-equiv="cache-control" content="no-cache, must-revalidate, post-check=0, pre-check=0">
<meta http-equiv="expires" content="0">
<meta http-equiv="pragma" content="no-cache">