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laravel session storage failed

May 20, 2023 pm 06:08 PM

In recent years, the Laravel framework has been more and more widely used in the field of web development, among which the Session mechanism is an important part of the Laravel framework. Session can be used to share data between requests, making it easier for developers to develop functions based on user login status. But in the process of using Session, we may also encounter some problems, such as Session storage failure.

If we find that Session storage fails during development, there are generally several possible reasons:

  1. Insufficient disk space

Laravel defaults to Use files to store sessions. If there is insufficient disk space, the session file will not be written normally, causing session storage to fail. At this time, we need to check whether the disk space is sufficient. You can use the command df -h to check the file system disk space usage.

If the Session storage fails due to insufficient disk space, the solution is relatively simple. You only need to free up some disk space or store the Session in another location.

  1. PHP session file storage path setting error

In addition to the above situation, if there are multiple PHP versions on the machine where Laravel is located, and session.save_path in PHP.ini Configuration errors can also cause Session storage to fail. Session is stored in the PHP session file by default, so we need to ensure that the PHP session file storage path is set correctly.

You can use php -i | grep session.save_path on the command line to check whether the PHP session file storage path is set correctly. If it is incorrect, you need to modify the php.ini file or add it in the code Set session.save_handler and session.save_path to specify the correct location.

  1. Session file permission issues

Laravel uses files to store Sessions. By default, Session files will be stored in the storage/framework/sessions directory. . If the permissions of this directory are incorrectly set, writing to the Session file will fail, resulting in session storage failure.

In Linux systems, the session folder permissions are usually 755 or 777. You can use ls -l on the command line to view the permission settings of the current folder and modify them.

  1. Middleware issues

In development using Laravel, middleware (Middleware) may also affect Session storage. Middleware is a filter that filters HTTP requests and responses before they enter the application or after they leave the application. Session middleware is used to verify whether the user is logged in and other functions. If the business logic of the middleware is incorrect, it will also cause Session storage to fail.

Therefore, when using Session middleware, you need to pay special attention to the order of the middleware to ensure that the business logic is correct.

  1. Session driver setting issues

The Laravel framework supports a variety of Session storage drivers, such as redis, memcached, cookie, etc. When using different storage drivers, we need to ensure that the driver configuration in the configuration file config/session.php is correct.

If the Session cannot be stored due to incorrect driver settings, the correct driver needs to be set in the configuration file.

  1. HttpSession file is full

HttpSession is the session mechanism of tomcat. If you need to use HttpSession in development, the Session may also be stored because the HttpSession file is full. fail. At this point you need to clean up the HttpSession file.

If the above-mentioned problems occur, you need to check the corresponding configuration, settings, etc. according to the specific situation to ensure that the session storage is normal. At the same time, when using the Laravel Session mechanism, you also need to pay attention to the following points:

  1. You need to set the Session expiration time according to your own needs.
  2. If you need to use non-file storage drivers such as redis, you need to install the corresponding PHP extension first.
  3. Session data needs to be encrypted and sensitive information should not be stored.

Summary

The storage failure of Laravel Session may be caused by many reasons, and we need to troubleshoot according to the specific situation. We need to ensure that there is sufficient disk space, the PHP session file storage path is set correctly, the file permissions are correct, the cache driver is set correctly, the business logic is correct, Session data is encrypted, etc. As long as we pay attention to the above details when using the Session mechanism, we can ensure the normal operation of the application.

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