Magento – How to disable the cache for the block in Magento 2

cachemagento2

protected function _construct()
    {
        $this->addData(
            [
                'cache_lifetime' => false,
                'cache_tags' => array('MY_BLOCK'),
            ]
        );
    }

    public function getCacheKeyInfo()
    {
        return [];
    }

does not work. Why? How to disable the cache for block?

Best Answer

Blocks can be set as non-cacheable by setting the cacheable attribute false in layout XML files. For example

<block class="Block\Class" name="blockname" cacheable="false" />

Pages containing such blocks are not cached.

Also check How do disable caching of custom block

Edit: A single cacheable="false" will disable Full Page Caching for the whole page, making the pages sourcing from that layout file extremely slow! Check https://inviqa.com/blog/how-full-page-cache-works-magento-2

Related Solutions

Magento – how to disable cache for cms block

To disable Block Html Cache you should set cacheLifeTime to null. You can see more details in Mage_Core_Block_Abstract::_loadCache()

protected function _loadCache()
{
    if (is_null($this->getCacheLifetime()) || !$this->_getApp()->useCache(self::CACHE_GROUP)) {
        return false;
    }
    ...
}

Magento – Disable cache for specific template

you can use with xml like

You can use it

<reference name="your block">
    <action method="setCacheLifetime"><s>null</s></action>
</reference>

<reference name="your block">
    <action method="setCacheLifetime" />
</reference>

to set it to null.

or if you are using it by getChild then also pass as argument

You can disable cache in getChildHtml(). This is what the signature looks like:

public function getChildHtml($name = '', $useCache = true, $sorted = false)

This should do the trick:

echo $this->getChildHtml('block', false);

Best Answer

Related Solutions

Magento – how to disable cache for cms block

Magento – Disable cache for specific template

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