Laravel Development: How to use Laravel Telescope for performance analysis and monitoring?

Laravel is an excellent PHP framework that is loved by developers because of its simplicity, ease of use and flexibility. To better monitor and analyze the performance of Laravel applications, the Laravel team has developed a powerful tool called Telescope. In this article, we will introduce some basic usage and features of Telescope.

1. Installing Telescope

In Laravel 5.5 or higher, Telescope is already included in the Laravel core, so you only need to run the following command in the terminal command line Telescope is ready to be installed:

composer require laravel/telescope

Next, run the following command to publish Telescope’s configuration and resource files:

php artisan telescope:install

Finally, run the following command to start the Telescope service provider:

php artisan telescope:provider

2. Configuring Telescope

Telescope’s configuration file can be opened with the following command:

php artisan vendor:publish --provider="LaravelTelescopeTelescopeServiceProvider" --tag="config"

In the config/telescope.php file, you can customize Telescope’s configuration information. For example, you can set the path to Telescope or disable the "Collection Service Provider". Additionally, you can change options for the data Telescope collects, such as how query and exception information is collected.

3. Accessing Telescope

After installing and configuring Telescope, you can access Telescope’s user interface by accessing the URL /telescope. You'll find various options in the navigation panel on the left, including:

• Dashboard: Overview of Telescope's various statistics and warnings.
• Requests: View the HTTP requests processed by the application, execution time and response code.
• Gates: View detailed information about Laravel Gate, including authorized and unauthorized permissions.
• Jobs: View detailed information of queue tasks, including processing time and execution status.
• Exceptions: View exception information thrown by the application and understand how these exceptions are handled and logged.
• Metrics: View useful statistics about application performance.

4. Telescope Toolbar

One of the most interesting features of Telescope is the Tool-bar, a set of tools for monitoring application performance and health controls. You can add it to your application for quick access in your local development environment.

To use the Telescope Tool-bar, add the following code in the resources/views/vendor/telescope/layout.blade.php file:

    @if (app()->isLocal())
        <script src="{{ asset('vendor/telescope/js/telescope.js') }}"></script>
    @endif

Next, access your local application and click the Telescope icon on the page to access the Telescope toolbar.

5. Telescope Command Line Tool

Finally, you can also use Telescope’s command line tool to view information about your application’s exceptions, logs, queues, and tasks . Here are some common commands:

• php artisan telescope:clear: Clear all Telescope data.
• php artisan telescope:prune: Delete all Telescope data older than the specified number of days.
• php artisan telescope:dump: Export Telescope data to a file.
• php artisan telescope:publish: Publish Telescope configuration files and resources.

Summary

Telescope is a very powerful tool that can help you understand the performance and operation of your Laravel application. With access to Telescope's interface, toolbar, and command line tools, you can easily monitor your applications and find potential issues. I personally recommend that you start using Telescope during the development stage, which can help you quickly locate problems and improve development efficiency.

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