rockso

Hi, I’ve just received and email from my hosting company, who’ve been helping me also. this is their email to me….

Hi

Thank you for providing the steps.

I have done some extensive testing this morning, and found the following which needs to be addressed with Litespeed support:

Purge product on changes to the quantity or stock status. Purge categories only when stock status changes.
X-LiteSpeed-Purge: public,9df_
Category, Subcategory and Product pages all purged after purchase even when product remains in stock
NOT EXPECTED
Notes: Expected Behaviour: With this selected the expectation would be that only the product page would be purged rather than the product page, category and subcategory pages after a single purchase which does not result in the item becoming out of stock.
Unfortunately due to the fact you are displaying the number of units in stock on your product pages this realistically is the preferred setting because otherwise the number of units in stock on each product page wouldn’t update after purchases. You do have the option of hiding the number of products in stock however.

Purge product and categories only when the stock status changes.
X-LiteSpeed-Purge: public,9df_FD
Category, Subcategory and Product pages remain cached when stock status remains in stock after purchase
EXPECTED BEHAVIOUR

Purge product only when the stock status changes. Do not purge categories on changes to the quantity or stock status.
X-LiteSpeed-Purge: public,9df_FD
Category, Subcategory and Product pages remain cached when stock status remains in stock after purchase
EXPECTED BEHAVIOUR
Notes: If you were to hide the number of units in stock on your product pages, this setting seems to work properly with the purge changing to X-LiteSpeed-Purge: public,9df_ = which results in product page and category/subcategory pages all being purged to then be updated to Out of Stock on the product which status has changed.

Always purge both product and categories on changes to the quantity or stock status.
X-LiteSpeed-Purge: public,9df_
Category, Subcategory and Product pages all purged after purchase
EXPECTED BEHAVIOUR

In conclusion to address the unreliable caching and performance:

• LSCache doesn’t seem to be purging correctly in the instance that only the product should be purged on each purchase provdiing the status does not change. This needs to be addressed with Litespeed Support.

I have tried all of the preset configured options.
When pages are cached, its amazingly fast.. I understand that when a product page has it’s stock levels changed, the cache is purged.. no problem, the none-cached product pages are generally 2 seconds TTFB, so acceptable..

The problem is with the product category pages, this is my selected option “Purge product only when the stock status changes. Do not purge categories on changes to the quantity or stock status.” Yet, each time the stock quantity changes, the product category cache is purged. Not only the category the product sits in, but also the parent categories.

none-cached product category pages have an appalling TTFB, rendering the site almost unusable. https://ibb.co/b1V8gy2

While none-cached pages, posts and products have a TTFB from 700ms to 2000ms…

It seems the cache, for the whole site is being purged, upon one single change to one product’s stock levels/stock status.

I just can’t understand why or how to fix it?

• This reply was modified 2 years, 3 months ago by rockso.

This did nothing. Other than the stock quantity on the product page no longer updates after a sale. I have turned ESI back on, flushed the cache, re-crawled, and the stock no longer updates on front end (tested across multiple private browsers).

In addition, switching ESI off, also did not fix the issue of product category pages cache purging and a TTFB of 10 + seconds

Shameem. You are a super star !
This worked, thank you!!

you are amazing! That worked perfectly! thank you!!!