Skip to content
  • About
    • What is Symfony?
    • Community
    • News
    • Contributing
    • Support
  • Documentation
    • Symfony Docs
    • Symfony Book
    • Screencasts
    • Symfony Bundles
    • Symfony Cloud
    • Training
  • Services
    • Platform.sh for Symfony Best platform to deploy Symfony apps
    • SymfonyInsight Automatic quality checks for your apps
    • Symfony Certification Prove your knowledge and boost your career
    • SensioLabs Professional services to help you with Symfony
    • Blackfire Profile and monitor performance of your apps
  • Other
  • Blog
  • Download
sponsored by
  1. Home
  2. Documentation
  3. Cache
  4. Adapters For Interoperability between PSR-6 and PSR-16 Cache
  • Documentation
  • Book
  • Reference
  • Bundles
  • Cloud

Table of Contents

  • Using a PSR-16 Cache Object as a PSR-6 Cache
  • Using a PSR-6 Cache Object as a PSR-16 Cache

Adapters For Interoperability between PSR-6 and PSR-16 Cache

Edit this page

Warning: You are browsing the documentation for Symfony 4.4, which is no longer maintained.

Read the updated version of this page for Symfony 6.3 (the current stable version).

Adapters For Interoperability between PSR-6 and PSR-16 Cache

Sometimes, you may have a Cache object that implements the PSR-16 standard, but need to pass it to an object that expects a PSR-6 cache adapter. Or, you might have the opposite situation. The cache component contains two classes for bidirectional interoperability between PSR-6 and PSR-16 caches.

Using a PSR-16 Cache Object as a PSR-6 Cache

Suppose you want to work with a class that requires a PSR-6 Cache pool object. For example:

1
2
3
4
5
6
7
8
9
10
11
12
13
use Psr\Cache\CacheItemPoolInterface;

// just a made-up class for the example
class GitHubApiClient
{
    // ...

    // this requires a PSR-6 cache object
    public function __construct(CacheItemPoolInterface $cachePool)
    {
        // ...
    }
}

But, you already have a PSR-16 cache object, and you'd like to pass this to the class instead. No problem! The Cache component provides the Psr16Adapter class for exactly this use-case:

1
2
3
4
5
6
7
8
9
use Symfony\Component\Cache\Adapter\Psr16Adapter;

// $psr16Cache is the PSR-16 object that you want to use as a PSR-6 one

// a PSR-6 cache that uses your cache internally!
$psr6Cache = new Psr16Adapter($psr16Cache);

// now use this wherever you want
$githubApiClient = new GitHubApiClient($psr6Cache);

4.3

The Psr16Adapter class was introduced in Symfony 4.3.

Using a PSR-6 Cache Object as a PSR-16 Cache

Suppose you want to work with a class that requires a PSR-16 Cache object. For example:

1
2
3
4
5
6
7
8
9
10
11
12
13
use Psr\SimpleCache\CacheInterface;

// just a made-up class for the example
class GitHubApiClient
{
    // ...

    // this requires a PSR-16 cache object
    public function __construct(CacheInterface $cache)
    {
        // ...
    }
}

But, you already have a PSR-6 cache pool object, and you'd like to pass this to the class instead. No problem! The Cache component provides the Psr16Cache class for exactly this use-case:

1
2
3
4
5
6
7
8
9
10
11
use Symfony\Component\Cache\Adapter\FilesystemAdapter;
use Symfony\Component\Cache\Psr16Cache;

// the PSR-6 cache object that you want to use
$psr6Cache = new FilesystemAdapter();

// a PSR-16 cache that uses your cache internally!
$psr16Cache = new Psr16Cache($psr6Cache);

// now use this wherever you want
$githubApiClient = new GitHubApiClient($psr16Cache);

4.3

The Psr16Cache class was introduced in Symfony 4.3.

This work, including the code samples, is licensed under a Creative Commons BY-SA 3.0 license.
TOC
    Version
    Version:
    Show your Symfony expertise

    Show your Symfony expertise

    Code consumes server resources. Blackfire tells you how

    Code consumes server resources. Blackfire tells you how

    Symfony footer

    Avatar of Jerzy Lekowski, a Symfony contributor

    Thanks Jerzy Lekowski (@jlekowski) for being a Symfony contributor

    3 commits • 121 lines changed

    View all contributors that help us make Symfony

    Become a Symfony contributor

    Be an active part of the community and contribute ideas, code and bug fixes. Both experts and newcomers are welcome.

    Learn how to contribute

    Symfony™ is a trademark of Symfony SAS. All rights reserved.

    • What is Symfony?

      • Symfony at a Glance
      • Symfony Components
      • Case Studies
      • Symfony Releases
      • Security Policy
      • Logo & Screenshots
      • Trademark & Licenses
      • symfony1 Legacy
    • Learn Symfony

      • Symfony Docs
      • Symfony Book
      • Reference
      • Bundles
      • Best Practices
      • Training
      • eLearning Platform
      • Certification
    • Screencasts

      • Learn Symfony
      • Learn PHP
      • Learn JavaScript
      • Learn Drupal
      • Learn RESTful APIs
    • Community

      • SymfonyConnect
      • Support
      • How to be Involved
      • Code of Conduct
      • Events & Meetups
      • Projects using Symfony
      • Downloads Stats
      • Contributors
      • Backers
    • Blog

      • Events & Meetups
      • A week of symfony
      • Case studies
      • Cloud
      • Community
      • Conferences
      • Diversity
      • Documentation
      • Living on the edge
      • Releases
      • Security Advisories
      • SymfonyInsight
      • Twig
      • SensioLabs
    • Services

      • SensioLabs services
      • Train developers
      • Manage your project quality
      • Improve your project performance
      • Host Symfony projects

      Deployed on

    Follow Symfony