## 路由表达式缓存 It’s possible to enable router cache via`RouteCollector::setCacheFile()`. See examples below: > 可以通过`RouteCollector::setCacheFile()`来启用路由器缓存。请参见下面的例子: ~~~php <?php use Slim\Factory\AppFactory; require __DIR__ . '/../vendor/autoload.php'; $app = AppFactory::create(); /** *要生成路由缓存数据，需要将文件设置为可写目录中不存在的文件。 *在第一次运行时生成文件后，只需要文件的读权限。 *您可能需要在开发环境中生成此文件，并在部署之前将其转换到您的项目中 *如果您对缓存文件所在的目录没有写权限，那么缓存文件将驻留在部署到的服务器上 * To generate the route cache data, you need to set the file to one that does not exist in a writable directory. * After the file is generated on first run, only read permissions for the file are required. * * You may need to generate this file in a development environment and comitting it to your project before deploying * if you don't have write permissions for the directory where the cache file resides on the server it is being deployed to */ $routeCollector = $app->getRouteCollector(); $routeCollector->setCacheFile('/path/to/cache.file'); ~~~