How to call API only one time and using response in each product block

[hieulvt128853b]

I override the template \vendor\magento\module-catalog\view\base\templates\product\price\amount\default.phtml to display a custom info in product price block. This info has been returned from an API.

My template: \app\code\MyVendor\My Module\view\frontend\templates\product\price\amount\default.phtml

<?php
/**
 * Copyright © Magento, Inc. All rights reserved.
 * See COPYING.txt for license details.
 */
?>

<?php /** @var $block \Magento\Framework\Pricing\Render\Amount */ ?>

<span class="price-container <?= $block->escapeHtmlAttr($block->getAdjustmentCssClasses()) ?>"
        <?= $block->getSchema() ? ' itemprop="offers" itemscope itemtype="http://schema.org/Offer"' : '' ?>>
    <?php if ($block->getDisplayLabel()) :?>
        <span class="price-label"><?= $block->escapeHtml($block->getDisplayLabel()) ?></span>
    <?php endif; ?>
    <span <?php if ($block->getPriceId()) :?> id="<?= $block->escapeHtmlAttr($block->getPriceId()) ?>"<?php endif;?>
        <?= ($block->getPriceDisplayLabel()) ? 'data-label="' . $block->escapeHtmlAttr($block->getPriceDisplayLabel() . $block->getPriceDisplayInclExclTaxes()) . '"' : '' ?>
        data-price-amount="<?= $block->escapeHtmlAttr($block->getDisplayValue()) ?>"
        data-price-type="<?= $block->escapeHtmlAttr($block->getPriceType()) ?>"
        class="price-wrapper <?= $block->escapeHtmlAttr($block->getPriceWrapperCss()) ?>"
    ><?= $block->escapeHtml($block->formatCurrency($block->getDisplayValue(), (bool)$block->getIncludeContainer()), ['span']) ?></span>
    <?php if ($block->hasAdjustmentsHtml()) :?>
        <?= $block->getAdjustmentsHtml() ?>
    <?php endif; ?>
    <?php if ($block->getSchema()) :?>
        <meta itemprop="price" content="<?= $block->escapeHtmlAttr($block->getDisplayValue()) ?>" />
        <meta itemprop="priceCurrency" content="<?= $block->escapeHtmlAttr($block->getDisplayCurrencyCode()) ?>" />
    <?php endif; ?>
</span>

<?php 
$customInfo = $block->getCustomInfo(); //Get info from the API
?>
<span><?=$customInfo?></span>

My block class is placed at \app\code\MyVendor\MyModule\Block

The problem is the API being called many times (same with the number of the product blocks). Because the result is the same at all so i just want to call API one time.

Please suggest me how can i do it.