I have a website with 80k to 100k visitors daily. nginx cache was working perfectly, but last week until now, it's not purging the cache completely. After publishing a post, I have to click on update post to completely show the contents to visitors. That's my main problem. I didn't changed any settings to nginx helper and redis cache. I enabled the nginx helper logs as well to check if there were errors when purging cache but no errors showing when cache purge after submitting a post.
Any way to check if the purge cache is working properly?