Configure TYPO3 6.2 to use Redis as LRU Cache. Put in typo3conf/conf.d/ and include via typo3conf/AdditionalConfiguration.php or merge array with LocalConfiguration.php.

cache-redis.php

<?php
/**
 * @see: typo3_src/typo3/sysext/core/Configuration/DefaultConfiguration.php
 */

/**
 * If phpredis extension exists, set cache backends to redis
 */
if (extension_loaded('redis')) {

    /**
     * Set default lifetime to 0 since Redis eviction policy is set to allkeys-lru
     */
    $commonOpts = array(
        'defaultLifetime' => 0
    );

    /**
     * Compression is disabled for maximum performance
     */
    $redisOpts = array(
        'hostname' => '127.0.0.1',
        'port' => 6379,
        'compression' => false,
        'compressionLevel' => 0
    );

    $opts = array_merge($commonOpts, $redisOpts);

    /**
     * [BEGIN] cached shared
     */
    $sharedCaches = array(
        'cache_hash',
        'cache_pages',
        'cache_pagesection',
        'cache_imagesizes',
        'cache_rootline'
    );

    $GLOBALS['TYPO3_CONF_VARS']['SYS']['caching']['cacheConfigurations']['cache_hash'] = array(
        'frontend' => 'TYPO3\CMS\Core\Cache\Frontend\VariableFrontend',
        'backend' => 'TYPO3\CMS\Core\Cache\Backend\RedisBackend',
        'options' => array_merge($opts, array(
            'database' => 4
        ))
    );

    $GLOBALS['TYPO3_CONF_VARS']['SYS']['caching']['cacheConfigurations']['cache_pages'] = array(
        'frontend' => 'TYPO3\CMS\Core\Cache\Frontend\VariableFrontend',
        'backend' => 'TYPO3\CMS\Core\Cache\Backend\RedisBackend',
        'options' => array_merge($opts, array(
            'database' => 5
        )) 
    );

    $GLOBALS['TYPO3_CONF_VARS']['SYS']['caching']['cacheConfigurations']['cache_pagesection'] = array(
        'frontend' => 'TYPO3\CMS\Core\Cache\Frontend\VariableFrontend',
        'backend' => 'TYPO3\CMS\Core\Cache\Backend\RedisBackend',
        'options' => array_merge($opts, array(
            'database' => 6
        )) 
    );

    $GLOBALS['TYPO3_CONF_VARS']['SYS']['caching']['cacheConfigurations']['cache_imagesizes'] = array(
        'frontend' => 'TYPO3\CMS\Core\Cache\Frontend\VariableFrontend',
        'backend' => 'TYPO3\CMS\Core\Cache\Backend\RedisBackend',
        'options' => array_merge($opts, array(
            'database' => 7
        )) 
    );

    $GLOBALS['TYPO3_CONF_VARS']['SYS']['caching']['cacheConfigurations']['cache_rootline'] = array(
        'frontend' => 'TYPO3\CMS\Core\Cache\Frontend\VariableFrontend',
        'backend' => 'TYPO3\CMS\Core\Cache\Backend\RedisBackend',
        'options' => array_merge($opts, array(
            'database' => 8
        )) 
    );

    /**
     * [BEGIN] cached local, no need to share between backends
     */
    $GLOBALS['TYPO3_CONF_VARS']['SYS']['caching']['cacheConfigurations']['l10n'] = array(
        'frontend' => 'TYPO3\CMS\Core\Cache\Frontend\VariableFrontend',
        'backend' => 'TYPO3\CMS\Core\Cache\Backend\RedisBackend',
        'options' => array_merge($opts, array(
            'database' => 9
        )) 
    );

    $GLOBALS['TYPO3_CONF_VARS']['SYS']['caching']['cacheConfigurations']['extbase_object'] = array(
        'frontend' => 'TYPO3\CMS\Core\Cache\Frontend\VariableFrontend',
        'backend' => 'TYPO3\CMS\Core\Cache\Backend\RedisBackend',
        'options' => array_merge($opts, array(
            'database' => 10
        )) 
    );

    $GLOBALS['TYPO3_CONF_VARS']['SYS']['caching']['cacheConfigurations']['extbase_reflection'] = array(
        'frontend' => 'TYPO3\CMS\Core\Cache\Frontend\VariableFrontend',
        'backend' => 'TYPO3\CMS\Core\Cache\Backend\RedisBackend',
        'options' => array_merge($opts, array(
            'database' => 11
        )) 
    );
}