Cesare, you can already do it. Having a button to install Varnish and configure it for any real website is a different thing.
It's impossible to have a single configuration that works for all website hosted. It must be done by hand.
Plesk just help you doing thing with GUI, it's not meant to replace the knowhow of a sysadmin.
Additionally you want it free. What about paying a module to do it?
You can already go to the support page and find the exact procedure to install Varnish for a single domain. Do you try googling it?
What else do you want.
The last one is just sad. Assuming I want a customer like you. Sorry I'm used to top tier customers.

@Giuseppe, Everything that Plesk installs, guess what, it's easy to install.

We want official support, because if anything goes wrong at any point (being configuration or regular use 2 years from now), try calling the people you pay every year (and well, let's not talk about the price increases) and tell them about Varnish use.

Oh wait.
Plesk and support in the same phrase used to make sense, but even that has gone (IME).

But yeah, In theory, officially supported -> Official support.

Another 2 things:
1) This is not a sysadmin competition, most people pay Plesk to have less of it, otherwise, why Plesk?

2) You lacking the knowledge to do it and being possible are two different things. Ask CloudPanel.
Oh, and they have Redis too.
For FREE.

Magicians?

"Pay someone else to do it".
Not you, for sure.

Installing it is easy, configuring it isn't. It will not work out-of-the-box after install.
You can already install it if you want. What else do you want? just a checkbox in the update page?
Not worth the time. Just use apt or dnf.

@Giuseppe - installing it is easy, I want it to be officially supported!

Stop asking for useless stuff. If you want Varnish you can install it by hand and configure it. Just like Redis. I already use both since years with Plesk without problems.
Varnish is impossibile to configure automatically, because it highly depends on the website it's running behind. Each website requires different varnish config, there isn't a preconfigured standard config. You WILL HAVE problems if you install Varnish in a preconfigured way. If you are a real sysadmin then you can install and configure it yourself. Otherwise, pay someone else to do it.

maybe in 2030....

Phew 11 years!! Is there a plan to add this any time soon ?

+1 after 11 Years.. oh boy....

+1 for vanish cache

No, I don't want to try Nginx caching because I don't use Nginx.

Would you mind working once in a while and putting relevant stuff on Plesk?

Thank you.

Basically people would rather use Varnish for obvious reasons and not nginx cache.

Come on Plesk, what are you waiting for to plan this? This is one of the most requested features and on top of everyone's list.

Will Varnish EVER be implemented on Plesk?
Please, don't tell me to create a boat to be able to use it with issues, and don't tell me about votes when this is already on top (and we're not talking about something mainstream).
Just a yes or no would be good.

+1 for vanish cache

I think the same. How long will the silence last from Plesk?
Varnish has been proposed for 10 years!
Can you explain why they don't implement it? They can not? They do not know?

I share the same opinion.

Varnish is essential for large websites, it is not acceptable that a very high level software such as plesk does not include the possibility to automatically enable Varnish. It can be done as a doker but the data show that it is not reliable and above all functional. I expect soon that Plesk developers will include this essential service for those of us who have high traffic sites.

Crikey, how is this still not implemented? How many votes do you need for something that should have been available 5 years ago!

Plesk used to be my go-to panel, and i still use it...just not anymore on my main sites.
We're in 2023, every year the price increases like crazy, and you can't make an extension or whatever to use Varnish?
What is the price increase for? Maintaining the same thing year after year, and adding useless stuff to it?
And no, I'm not going to use Docker after paying this much for a panel.

It would be a big advantage for plesk if there was an extension and support for varnish