Tag counts remain unchanged when post is deleted

[alexaw (Alexa)]

No matter the topic is created by admin or user, once deleted by admin, the tag counts in /tag still remain unchanged to both admin and user.

I searched in meta and found that it should be a solved bug long ago, but I encountered this bug just now.

Incorrect Count on /tags page (included deleted topics - now fixed)

Summary: Over at Stonehearth it was noticed by an Admin today that the count on the /tags page is incorrect for some tags. Steps to reproduce: Unknown. Expected Results: Number next to tags matches number of topics seen when viewing individual tag page. Actual Results: Number next to tags is greater than the number of topics seen when viewing individual tag page. Notes: The difference between the number of topics with a tag and the number displayed appears to be constant i.e. ui had the …

Steps to reproduce:

1. Create a new topic, and add tag(s) to it
2. Check tag counts in /tag
3. Admin delete the topic
4. Check tag counts again

Discourse version: 2.5.0.beta3 (0e4db91870)

[codinghorror (Jeff Atwood)]

I believe these global counts are updated in a background task and cached heavily so it may take a day for them to appear.

[alexaw (Alexa)]

Thank you. I will check again after a day or two.

[alexaw (Alexa)]

@codinghorror

Yes it’s definitely a cache problem, I can view the correct post count after a day.
Thank you so much.