Adding a Cache Service

Hey Gianluca,

I think your "doctrine_cache" configuration should be like:

doctrine_cache:
    aliases:
        memcached_cache: service_connection_memcached_provider
    providers:
        service_connection_memcached_provider:
            memcached:
                connection_id: "memcached.doctrine"

And then you should be able to use the short "memcached_cache" alias to get the memcached provider, instead of using long "doctrine_cache.providers.service_connection_memcached_provider":

$memcachedCache = $this->container->get('memcached_cache');

I hope this helps!

Cheers!

Hey Igor,

Those are just different caching systems, own has its advantages on it depends on your project to choose one or another. You can find *a lot* of information on the internet about each one. For the difference between memcache and memcached you can check this answer: https://stackoverflow.com/a... . But "array" type is something interesting, it do nothing, just simulate some kind of caching. It's useful only on your local machine when developing or testing the project, you don't need to write some conditions to cache only on production, that means you can still call caching methods but nothing will be cached, i.e. you don't need to write custom conditions to cache things only in production mode.

Cheers!

Thanks for the quick reply

I tried to find good example for cache memcache and redis and didn't found in symfony project. maybe you can point me out
Can you assist me with this?

Hey Igor,

I don't have an example of memcache, but we do talk about Redis in our Ansible tutorials:
https://knpuniversity.com/s...
https://knpuniversity.com/s...

You can find some examples in course code. But with Memcache actually the same, you just need to specify another cache provider, i.e. Memcache provider instead of Redis one, but methods of Cache Component are the same of it, so you even don't need to tweak any line of code. And of course, you need to install Memcache in your system.

Cheers!

Hey Rodrigo,

Are you talking about Symfony HTTP cache here? Actually, Symfony do not make any automatic caching at all. All caching layers you have to add by yourself manually. So just do not add caching on specific route you won't to be cached and that's it. Or am I misunderstand you?

Cheers!

I dont really know where or what, i didnt set any cache at all, but in a production environment all my pages are working with cache, i did clear de cache and validate that the directory is empty, but after some random visits de cache directory has some new files and the content of my pages dosent have the latest information.

Hm, it's weird. Do you use shared hosting? Probably your hosting has some caching feature out-of-the-box, so you have to disable it first. Do you mean if you manually remove the "var/cache/prod/" on production - you still won't see the new updated (latest) HTML markup for example?

Cheers!

I am working with a shared hosting, they dont have any cache, if i delete all the files at "var/cache/prod" i see the new updated html, if after that i update the html and make a new visit to the same page with out clearing the cache i got the oldest one.

Hey Rodrigo,

Ah, that's on purpose - you have to clear the prod cache when you want to apply some changes in HTML layout. Actually, this way Symfony increase its performance what is important on production. So after each deploy, you have to clear the prod cache in console: "$ bin/console cache:clear -e prod" - if you have SSH access on your shared hosting, or just remove "var/cache/prod" directory manually - it should work as well. Symfony regenerate cache only for dev environment, which is very convenience for development - you don't have to clear the dev cache by itself. Btw, take a look at How to Deploy a Symfony Application in Symfony docs.

Cheers!

Hey Michael!

Yes, you can rely on the bundle names like this! Internally, when you pass DoctrineCacheBundle, Symfony looks for a Configuration file in that bundle, which provides the config information. And if you pass the config key instead - doctrine_cache - Symfony determines which bundle that config key is attached to (DoctrineCacheBundle) and then performs the same lookup for the Configuration file. So yes, passing the bundle name always works.

Btw, if you're curious, here is the file Symfony looks for to load the configuration tree: https://github.com/doctrine/DoctrineCacheBundle/blob/master/DependencyInjection/Configuration.php

Cheers!

Hey Nan,

You probably means how to do it in Symfony Flex. Looks like this bundle somehow does not a Symfony recipe. I also wonder why, so I opened an issue: https://github.com/doctrine/DoctrineCacheBundle/issues/131 . It's not a big deal, you can install this bundle with Composer and then manually create a config file for it in "config/packages/doctrine_cache.yaml" where paste related configuration, i.e.:

# config/packages/doctrine_cache.yaml
doctrine_cache:
    providers:
        my_markdown_cache:
            type: file_system
            # ...

If you have other problems - let me know.

Cheers!