Magento – How to fix customer session time out in Magento 1.4.1.1

In the end the solution that was deemed suitable for my requirements has been to validate the user on the front end request. When the user account has been logged in, we check to see if the account is still enabled, if its not log them out from their own session and redirect to login page.

I am facing same problem when Cache enable I am not able to get customer session.But I find below solution

    /**
     * @var \Magento\Customer\Model\Session
     */
    protected $_customerSession;

    public function __construct(Template\Context $context,
            \Magento\Framework\App\Request\Http $request,
            \Magento\Customer\Api\CustomerRepositoryInterface $customerRepository,
            \Magento\Customer\Model\SessionFactory $customerSession
        ) 
    {
        $this->request = $request;
        $this->customerRepository = $customerRepository;
        $this->_customerSession = $customerSession;
        parent::__construct($context);
    }

    public function getCustomerId(){
        $customer = $this->_customerSession->create();
        var_dump($customer->getCustomer()->getId());
    }

Use above code in block It is working even cache is enable.

Second Solution:

Add cacheable="false" in your xml

<referenceContainer name="content">
     <block class="Vendor\Modulename\Block\Customer" name="customer.session.data" template="Vendor_Modulename::customertab.phtml" cacheable="false" />
 </referenceContainer>

Add below code in block:

    /**
     * @var \Magento\Customer\Model\Session
     */
    protected $_customerSession;

    /**
     * Construct
     *
     * @param \Magento\Framework\View\Element\Template\Context $context
     */
    public function __construct(Template\Context $context,
            \Magento\Framework\App\Request\Http $request,
            \Magento\Customer\Api\CustomerRepositoryInterface $customerRepository,
            \Magento\Customer\Model\Session $customerSession
        ) 
    {
        $this->request = $request;
        $this->customerRepository = $customerRepository;
        $this->_customerSession = $customerSession;
        parent::__construct($context);
    }

    public function getOrderData(){
        $customerId = $this->_customerSession->getCustomerId();
        return $customerId;
    }