Hi,
First, object caching means the cache needs to add/update/delete/expiration by using wp_cache_* function. By default, WordPress core uses it. When activating docket cache, it extends the feature makes it persistent by storing the cache into php files using object-cache.php file, it called drop-in file.
Is the cache enabled in the admin?
Yes, with or without docket cache, WordPress object cache enables by default.
Should I worry about order management in WooCommerce?
No.
What does the option Deactivate Woocommerce admin means
It turn off WooCommerce Analytics page. It related to performance.
When Advanced post caching is enabled, if I updated a product’s price… does the home page gets updated too?
Yes, it should automatically, unless you’re updating directly to database without using WordPress.
What Advanced post caching does is, it reduce database query by caching WordPress post queries.
When do you recommend I should flush the cache? Should I worry about pricees and such?
Only when you need something fresh. Normally it’s not caused any issue.
If I install opcache on my server.. i still need the plugin to use it with WP, right?
No need. We only require a native opcache extension. Docket cache comes with OPcache viewer. You can enable it at Configuration -> OPcache Viewer.
It needs to create the object-cache.php file or it won’t use the php cache
Docket cache will handle this part. Without it own object-cache.php file, docket cache can’t handle object caching.
I’m suggesting using “query monitor” plugin for debugging and see what happens in WordPress process.
https://wordpress.org/plugins/query-monitor/
you’re welcome, glad to help.
Thanks.