Caching not working after upgrading to 2.3.2

Question

After I update my Magento 2 installation to 2.3.2 from 2.3.1 the site caching seems not working as expected. I've double checked the FPC enabled, the site is in production mode. Still, the first response takes more than 20 seconds to the response. Here is the response header I get.

Any idea what causing this?

Please note: Here I see the expires date is earlier than the current time.

Update:

I completely disable the cache, then the loading time takes about 32.x seconds (without caching). With caching enabled it takes 20.x seconds.

Answer 1

After all, it was due to a MySQL timeout. I installed MySQL on the same Linux box to resolve this. I still don't understand why this happened suddenly after the update. My best bet is on Restarting my VM(droplet) @ digital ocean triggered something.

Enabling PHP FPM slow log helped me to understand the slow response due to the MySQL connection issue.

Hope this will help someone who will face the similer issue.

Answer 2

Try running below commands:

redis-cli -s /var/run/redis-multi-a0a405e6.redis/redis.sock FLUSHALL

NOTE: Only required some time: (Below command is different based on server, Please ask to hosting support for clear redis cache. Above is working for nexcess cloud hosting. run this command only if the redis is enabled)

php bin/magento cache:clean

rm -rf var/cache/*

rm -rf var/page_cache/*

rm -rf generated/code/*

php bin/magento setup:upgrade

php bin/magento maintenance:disable(if maintenance is enabled)

Hope this helps.

Answer 3

CF for my opinion should bypassed. Except you have traffic from all over world. There we can discuss it. I was having these kinds of issues especially with setup:

Nginx + PHP-FPM as proxy > Varnish > Nginx SSL

1. I think you should enable varnish with this info:

Varnish Install

2. Use your own SSL and bypass CF
3. Configure Nginx as proxy pass

Although if you want to keep your setup you should add to your vhost these lines:

 location ~* \.(ico|css|js|gif|jpeg|jpg|png|woff|ttf|otf|svg|woff2|eot)$ {
       expires 90d;
       access_log off;
       add_header Pragma public;
       add_header Cache-Control "public, max-age=86400";
       add_header X-Asset "yes";
   }

I am not sure if this will work with CF. For me wasn't working