Chapters

25 Chapters | 2:34:05 |

01

Bundles!

4:31
02

New Bundle, New Service: KnpTimeBundle

5:09
03

Finding & Using the Services from a Bundle

6:38
04

The HTTP Client Service

6:23
05

The Cache Service

8:05
06

Bundle Config (to Control Bundle Services)

6:03
07

Configuring the Cache Service

5:39
08

debug:container & How Autowiring Works

7:41
09

Environments

8:55
10

The "prod" Environment

6:06
11

Creating a Service

5:55
12

Dependency Injection

9:34
13

Parameters

6:45
14

Manual Service Config in services.yaml

4:24
15

All About services.yaml

10:27
16

Bind Arguments Globally

3:40
17

Named Autowiring & Scoped HTTP Clients

4:43
18

Non-Autowireable Services

6:41
19

Controllers are Services Too!

2:49
20

Environment Variables

7:53
21

The Secrets Vault

5:46
22

Reading Secrets vs Env Vars

6:53
23

MakerBundle & Autoconfiguration

4:27
24

Customizing a Command

4:20
25

Command: Autowiring & Interactive Questions

4:38

> Symfony 6 > Symfony 6 Fundamentals: Services, Config & Environments

Buy Access to Course

05.

The Cache Service

|

|

Autoplay

Previous Challenge

Next Chapter

Login or register to check out the script

26 Comments

Sort By

Login or Register to join the conversation

Fedale 3 years ago

In Symfony 6.1 new class' name is Symfony\Contracts\Cache\ItemInterface so you have to change callback like this:
function(ItemInterface $cacheItem) {}

Cheers
Danilo

2 |

weaverryan SFCASTS Fedale 3 years ago

Hey @Fedale!

Thanks for the note! In truth, both work just fine in any Symfony version, though I probably should have used ItemInterface. ItemInterface extends the CacheItemInterface that we use in this video, so both work. However, if you use ItemInterface , then you have addition ->tag() and ->getMetadata() methods to give you more flexibility.

Cheers!

|

FooBacke 2 years ago edited

when@dev:
    parameters:
        cache_adapter: 'cache.adapter.array'

could be the reason why it ever reads from API and never from cache?

|

weaverryan SFCASTS FooBacke 2 years ago

Yo @FooBacke!

That would definitely disable caching in the dev environment (well, if you called the same method 2 times in the same request, it would fetch from the cache the 2nd time... but not really true caching). But where did you see this config? Is it something you added in your app - or did we add it in the screencast (I couldn't find us adding this - but I may be forgetting).

Cheers!

|

ZidK 2 years ago

I'm trying to invalidate the first mixed_data chached item without ttl but it's not working.

I tried with:

php bin/console cache:pool:clear cache.app
php bin/console cache:clear    
php bin/console cache:pool:clear --all

If I test again with private browser and let the npm run watch running, I always still hitting the cached item.
If I change the cache name to a new one it works.

The only thing that changes if I clear the cache.app is that the total cache calls are increased from 1 to 3 in that request (100% hits/reads).

|

droptica_team ZidK 2 years ago

Do you use symfony docker? Then you need to run it as

docker-compose exec php bin/console

1 |

Victor SFCASTS droptica_team 2 years ago edited

Hey @droptica_team ,

Thanks for this tip! Yeah, either run the bin/console from inside the container, or leverage Symfony binary, i.e. run it via symfony console and Symfony will handle Docker stuff for you.

Cheers!

|

ZidK droptica_team 2 years ago edited

Yes, I forgot to mention that I was using docker, but it makes sense and I'm pretty sure that it's about that. Thanks @droptica_team

|

Victor SFCASTS ZidK 2 years ago edited

Hey ZidK,

OK great, then @droptica_team tip should help, or for simplicity just call any console command via Symfony binary,, e.g. symfony console - and it will be handle Docker setup for you automatically.

Cheers!

|

weaverryan SFCASTS ZidK 2 years ago

Hey @ZidK!

Hmmm, that is super weird. It's especially weird that passing --all would STILL not result in the item being cleared... as that is supposed to clear ALL the cache pools. In this tutorial, the cache:pool:clear definitely seemed to work for me... I'm really not sure what would be going on in your case. Are you using the filesystem adapter like we are - or something else?

Cheers!

1 |

Xavi 2 years ago edited

Cannot resolve argument $cache of "App\Controller\VinylController::browse()": 
Cannot determine controller argument for "App\Controller\VinylController::browse()": 
the $cache argument is type-hinted with the non-existent class or interface: 
"Psr\SimpleCache\CacheInterface".

I don't know how fix this error

|

MolloKhan SFCASTS Xavi 2 years ago edited

Hey @Xavi

You imported the wrong interface, this is the one you should be using Symfony\Contracts\Cache\CacheInterface;

Cheers!

1 |

Xavi MolloKhan 2 years ago

Oh my god...

Thank you so much!

|

BossManF 2 years ago

My Httpclient is working but it not appearing in the profiler. Can you please let me know what I am doing wrong

|

mahesame BossManF 2 years ago

My Http Client didn't appear as well in the profiler. When I find out, I had to update the Symfony version from 6.1 to 6.3. After upgrading, I can see the Http Client in the profiler. Maybe there was a bug in Symfony 6.1 regarding the Http Client in the profiler.

1 |

Victor SFCASTS mahesame 2 years ago edited

Hey @mahesame ,

Thanks for this tip!

Cheers!

|

Victor SFCASTS BossManF 2 years ago

Hey BossManF,

If you do any redirects after the API request with HTTP client sent - you won't see those in your profiler for the latest request. You will need to find the specific app request where you you send those API requests with HTTP client in the Last 10 requests first.

Cheers!

|

ahmedbhs 3 years ago

A question about cache expiration: do we need to call the expiresAfter(5) function if the cache lifetime is already configured to 5 second like this cache.pool.default.default_lifetime: 5
I mean, does default_lifetime do the same job of expiresAfter function ?

|

MolloKhan SFCASTS ahmedbhs 3 years ago edited

Yes, that's how it is supposed to work. The default lifetime value will be added up to the time when the cache item was created

Cheers!

|

Vlame 3 years ago

Does the php bin/console cache:pool:clear cache.app command the same as the php bin/console cache:clear command?

|

weaverryan SFCASTS Vlame 3 years ago

Hey @Vlame!

Excellent question! These are actually 2 different things for the 2 different types of cache in Symfony

A) cache:pool:clear is used to clear the "cache" that we were talking about in this tutorial. This is the cache where you can store items, including things for your application but also the core stores some things in cache pools. For example, Doctrine caches the DQL -> SQL generation in a cache pool. In short, when you think about a "caching system", this command is used to clear those.

B) cache:clear has a different purpose. When Symfony loads, internally, it caches a bunch of stuff - most importantly it caches your routes after parsing them and it caches all of your services. This is all stored in the var/cache/dev directory (or var/cache/prod in the prod environment) and it's not something you typically need to think about. If a routing file changes, Symfony automatically rebuilds this cache. These are fundamental cache file that Symfony needs to even function.

You'll run cache:clear each time you deploy, because you DO want to rebuild these cache files (these cache files are 100% built from your code - so if your code changes, you should rebuild the cache). But you'll rarely run cache:pool:clear as these are typically things that you want to keep in cache until they expire.

Let me know if that helps!

Cheers!

|

Vlame weaverryan 3 years ago

Hello @weaverryan,

Thanks for your answer! It is clear for me what the differences are. Thanks a lot!

|

Влада Петковић 4 years ago

Would there be a possibility to process some new examples of creating services and bundles in future lessons? For God's sake, since version Symfony 3 you have been demonstrating examples with the Cache and MarkDown helper - service.Are there any other examples besides those?

|

Victor SFCASTS Влада Петковић 4 years ago

Hey Vlada,

We have a separate course about creating a Symfony bundle, I think you might be interested in it, you can check it out here: https://symfonycasts.com/sc...

Hm, the idea of this course is not about learning how write an implementation of a specific service, but how to write service in general. We cover everything you need to be able to create *any* service and inject any dependencies into them. But I see your point, we will try to find a different service example in future tutorials just to diversify out tutorials for those who are watching past courses as well. Thank you for you feedback! Also, if you have any ideas what specific services would be great to cover in your opinion - please, share it!

Cheers!

1 |

Влада Петковић Victor 4 years ago

I respect your work and the effort you put into creating new lessons, but I believe that there must be something new because sticking to old lessons and changing only the version of the Symphony does not contribute to the quality of learning and mastering the material. If the Symphony team claims that the Symphony is so powerful (I honestly believe that this is true) then demonstrate that strength and power through various examples and not through just one example. I'm not a lecturer, nor do I consider myself an excessively experienced programmer, but if you're already asking me to suggest specific examples for bundles and services, then you could, for example, in with your lessons, you show how to make a specific visual web control that could be used as a package in various web applications. For example, a DataGrid control with the implementation of data pagination, filtering and sorting data or DataView control as they exist in Yii2 framework. The KnpPaginatorBundle package almost always has some bugs and does not work in new versions of Symfony. The EasyAdmin bundle is too crowded with functions for simple display of data in a DataGrid with elementary possibilities that these controls should offer (pagination, sorting and filtering and nothing more ... ). An even better example would be the implementation of a separate layer of the database with business rules (n-tier web application) as a separate service.

Greeting.

|

weaverryan SFCASTS Влада Петковић 4 years ago

Hey @Влада Петковић

Yea, sorry for the repetition. These "basic" courses aren't really meant to be different across Symfony versions... we just give them an "update" do keep the content current. If you're watching them across Symfony versions, you're definitely going to hear the same things over and over again :). What I need to do (and it's my goal for the summer) is to quickly finish these basic course updates so we can get into bigger and better things.

> For example, a DataGrid control with the implementation of data pagination, filtering and sorting data

That's a cool idea... and I've been liking the idea more lately of having some shorter tutorials that just solve some interesting problem vs teach a concept in Symfony (we will still have those, but just "coding up a feature" I think is an interesting idea).

Anyways, thank for the idea and patience - I realize that these "basic" Symfony tutorials are not much fun for seasoned Symfony devs :).

Cheers!

2 |

Symfony 6.1

What PHP libraries does this tutorial use?

// composer.json
{
    "require": {
        "php": ">=8.1",
        "ext-ctype": "*",
        "ext-iconv": "*",
        "knplabs/knp-time-bundle": "^1.18", // v1.19.0
        "symfony/asset": "6.1.*", // v6.1.0-RC1
        "symfony/console": "6.1.*", // v6.1.0-RC1
        "symfony/dotenv": "6.1.*", // v6.1.0-RC1
        "symfony/flex": "^2", // v2.4.5
        "symfony/framework-bundle": "6.1.*", // v6.1.0-RC1
        "symfony/http-client": "6.1.*", // v6.1.0-RC1
        "symfony/monolog-bundle": "^3.0", // v3.8.0
        "symfony/runtime": "6.4.3", // v6.4.3
        "symfony/twig-bundle": "6.1.*", // v6.1.0-RC1
        "symfony/ux-turbo": "^2.0", // v2.1.1
        "symfony/webpack-encore-bundle": "^1.13", // v1.14.1
        "symfony/yaml": "6.1.*", // v6.1.0-RC1
        "twig/extra-bundle": "^2.12|^3.0", // v3.4.0
        "twig/twig": "^2.12|^3.0" // v3.4.0
    },
    "require-dev": {
        "symfony/debug-bundle": "6.1.*", // v6.1.0-RC1
        "symfony/maker-bundle": "^1.41", // v1.42.0
        "symfony/stopwatch": "6.1.*", // v6.1.0-RC1
        "symfony/web-profiler-bundle": "6.1.*" // v6.1.0-RC1
    }
}

Previous Challenge

Next Chapter