Varnish Cache

While using Varnish Cache and if after saving your changes you can still see your old content, then it’s possible that Varnish Cache may not have cleared automatically.

There are some WordPress plugins that allow you to clear your cache: https://wordpress.org/plugins/search/varnish+cache/

If that doesn’t work, you can also manually purge Varnish Cache by performing this command in a terminal:

curl -X PURGE http://mysite.com/my-page/