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Example: FPC lifetime is 1 day but a page contains a block with a lifetime of 1 hour. How will that be handled? Will the page be served from the cache after the hour?

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It did a quick test on it:

  • I did set the FPC lifetime to 60 second
  • I wrote a block and overrode \Magento\Framework\View\Element\AbstractBlock::getCacheLifetime to return 30
  • Additionally I set ttl="30" in layout xml

Without the block the FPC lifetime was 60 seconds as expected. Then I inserted the block on the page and the FPC lifetime was still 60 seconds, the block was unaffected of the given 30 seconds.

Maybe I did set the cache lifetime of the block wrong but it seems like the FPC just ignores any lifetime set in the block.

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    I hate that - I think it should work differently.
    – Alex
    Commented Jan 23, 2019 at 13:03

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