Use redis for session

[kiatng]

Ref

magento-lts/app/code/core/Mage/Core/Model/Session/Abstract/Varien.php

Lines 70 to 74 in 94f08e1

	case 'redis':
	/* @var Cm_RedisSession_Model_Session $sessionResource */
	$sessionResource = Mage::getSingleton('cm_redissession/session');
	$sessionResource->setSaveHandler();
	if (method_exists($sessionResource, 'setDieOnError')) {

Line 72: Mage::getSingleton('cm_redissession/session') is false. This is because Cm_RedisSession module was removed in PR #2411.

Trace:

Array
(
    [type] => 1
    [message] => Uncaught Error: Call to a member function setSaveHandler() on bool in /.../app/code/core/Mage/Core/Model/Session/Abstract/Varien.php:73
Stack trace:
#0 /.../app/code/core/Mage/Core/Model/Session/Abstract/Varien.php(273): Mage_Core_Model_Session_Abstract_Varien->start()
#1 /.../app/code/core/Mage/Core/Model/Session/Abstract.php(79): Mage_Core_Model_Session_Abstract_Varien->init()
#2 /.../app/code/core/Mage/Core/Model/Session.php(43): Mage_Core_Model_Session_Abstract->init()
#3 /.../app/code/core/Mage/Core/Model/Config.php(1460): Mage_Core_Model_Session->__construct()
#4 /.../app/Mage.php(544): Mage_Core_Model_Config->getModelInstance()
#5 /.../app/Mage.php(558): Mage::getModel()
#6 /.../app/code/core/Mage/Core/Controller/Varien/Action.php(495): Mage::getSingleton()
#7 /.../app/code/core/Mage/Adminhtml/Controller/Action.php(173): Mage_Core_Controller_Varien_Action->preDispatch()
#8 /.../app/co
    [file] => /.../app/code/core/Mage/Core/Model/Session/Abstract/Varien.php
    [line] => 73
)

Preconditions (*)

In local.xml

<config>
  <global>
    ...
    <session_save>redis</session_save>
   ...

[kiatng]

The file 'cm_redissession/session' is here: vendor\colinmollenhour\magento-redis-session\app\code\community\Cm\RedisSession\Model\Session.php. But I have no idea how to proceed.

$sessionResource = new Cm_RedisSession_Model_Session;

Fatal error: Uncaught Error: Class "Cm_RedisSession_Model_Session" not found

[m-overlund]

i use
<session_save>db</session_save> for redis.
But i have also previously tried to use the other session_save without succes

[ADDISON74]

Maybe @colinmollenhour could help you.

[colinmollenhour]

If installed as a Magento module (it has "type":"magento-module", in composer.json) then it should be loading - technically if we used new instead of getSingleton then it would not be necessary for it to be a Magento module at all and just an "autoload" section in the compose.json would be sufficient to let it autoload. Does your compose environment have a magento module loader?

[kiatng]

I'm not sure where to look if my composer environment has the magento module loader. I have this in the file vendor\composer\installed.json:

          {
            "name": "magento-hackathon/magento-composer-installer",
            "version": "4.0.2",
            "version_normalized": "4.0.2.0",
            "source": {
                "type": "git",
                "url": "https://github.com/Cotya/magento-composer-installer.git",
                "reference": "ece5cc5bb2a0150a743619901543036597f9eb5b"
            },
            "dist": {
                "type": "zip",
                "url": "https://api.github.com/repos/Cotya/magento-composer-installer/zipball/ece5cc5bb2a0150a743619901543036597f9eb5b",
                "reference": "ece5cc5bb2a0150a743619901543036597f9eb5b",
                "shasum": ""
            },
            "require": {
                "composer-plugin-api": "^2.0",
                "flyingmana/composer-config-reader": "*",
                "php": ">=5.5",
                "symfony/console": "^2.5|^3.0|^4.0|^5.0"
            },
            "require-dev": {
                "composer/composer": "2.*",
                "cotya/composer-test-framework": "~2.0",
                "ext-json": "*",
                "mikey179/vfsstream": "~1.4",
                "phpunit/phpunit": "~4.3",
                "phpunit/phpunit-mock-objects": "~2.3",
                "squizlabs/php_codesniffer": "~2.1",
                "symfony/process": "~2.5"
            },
            "suggest": {
                "colinmollenhour/modman": "*",
                "theseer/autoload": "~1.14"
            },
            "time": "2022-04-20T19:23:22+00:00",
            "bin": [
                "bin/magento-composer-installer.php"
            ],
            "type": "composer-plugin",
            "extra": {
                "class": "MagentoHackathon\\Composer\\Magento\\Plugin"
            },
            "installation-source": "dist",
            "autoload": {
                "psr-0": {
                    "MagentoHackathon\\Composer": "src/"
                }
            },
            "notification-url": "https://packagist.org/downloads/",
            "license": [
                "OSL-3.0"
            ],
            "authors": [
                {
                    "name": "Daniel Fahlke aka Flyingmana",
                    "email": "flyingmana@googlemail.com"
                },
                {
                    "name": "Jörg Weller",
                    "email": "weller@flagbit.de"
                },
                {
                    "name": "Karl Spies",
                    "email": "karl.spies@gmx.net"
                },
                {
                    "name": "Tobias Vogt",
                    "email": "tobi@webguys.de"
                },
                {
                    "name": "David Fuhr",
                    "email": "fuhr@flagbit.de"
                },
                {
                    "name": "Vinai Kopp",
                    "email": "vinai@netzarbeiter.com"
                }
            ],
            "description": "Composer installer for Magento modules",
            "homepage": "https://github.com/magento-hackathon/magento-composer-installer",
            "keywords": [
                "composer-installer",
                "magento",
                "openmage"
            ],
            "support": {
                "issues": "https://github.com/Cotya/magento-composer-installer/issues",
                "source": "https://github.com/Cotya/magento-composer-installer/tree/4.0.2"
            },
            "funding": [
                {
                    "url": "https://github.com/sponsors/Flyingmana",
                    "type": "github"
                },
                {
                    "url": "https://www.patreon.com/Flyingmana",
                    "type": "patreon"
                }
            ],
            "install-path": "../magento-hackathon/magento-composer-installer"
        },

Is this it? I'd appreciate any help as I am quite clueless.