Caching cleared up with PSR-6 at PHP ugle

In this talk we will explain what PSR-6 is, why it is designed like it is, and how to use it. From the provided interfaces, the virtual package on Packagist.org, to the implementations available. Everything will be explained for both beginners and more experienced developers. We will dive into implementations, cache stampede protection, all using libraries we can find on Packagist.org. We will also show how to start using it today in our current applications by using adapters. The entire talk will be accompanied with code samples and live demos, showing both working and failing caching systems.

Audience feedback can be found here: http://www.meetup.com/PHPugle/events/230863115/

Transcript

1. Caching with PSR-6 #phpugle ! @hannesvdvreken @phpugle
2. Hi, my name is Hannes.
3. "
4. madewithlove.be 20 × "&'()*
5. PSR-6 Caching in PHP anno 2016
6. 1. Intro 2. Caching in 2015 3. Hello PSR-6 4. Practical
7. 1. Intro what is caching?
8. WHAT IS CACHING Speed up your app
9. WHAT IS CACHING Prevent waiting on repetitive slow tasks
10. WHAT IS CACHING 1. Execute slow task 2.Remember result
11. WHAT IS CACHING At different layers: User-Agent Webserver (Varnish/Nginx) Application Opcache
12. WHAT IS CACHING Should not cause app failure
13. 2. Caching in 2015 the state of caching (pre PSR-6)
14. APPLICATION CACHING IN 2015 1. Libraries do it 2.Frameworks do it 3.Cache libs do it
15. APPLICATION CACHING IN 2015 Frameworks & cache libs have their own: - interfaces - support for caching systems
16. APPLICATION CACHING IN 2015 Adapters everywhere!
17. APPLICATION CACHING IN 2015 If no adapter available - Write your own - Store in different cache stores
18. 3. Hello PSR-6 what does that mean?
19. INTRODUCING PSR-6 Finalised & accepted in December 2015
20. INTRODUCING PSR-6 Repository - Entity
21. INTRODUCING PSR-6 use Psr\Cache\CacheItemPoolInterface; use Psr\Cache\CacheItemInterface; $item = $pool->getItem($key); $item->getKey();
22. INTRODUCING PSR-6 Lemme see that code
23. INTRODUCING PSR-6 Don’t instantiate your own Items. $item = $pool->getItem(‘key’) ->set($value) ->expiresAfter(3600); $pool->save($item);
24. INTRODUCING PSR-6 Item is an entity, it’s not immutable, but the Key is
25. INTRODUCING PSR-6 CacheItemInterface has no getExpiresAt
26. INTRODUCING PSR-6 Pool has support for multi-actions $pool->getItems($keys); $pool->saveDeferred($item); $pool->commit();
27. INTRODUCING PSR-6 Repository - Entity model allows extensions
28. INTRODUCING PSR-6 Cache features: - Stampede protection - Taggable cache - Hierarchical cache
29. 4. Practical who uses it, and how can I use it?
30. START USING IT Implementations: packagist.org/packages/psr/cache-implementation
31. START USING IT Integration tests for implementations: cache/integration-tests
32. START USING IT - UPGRADE Upgrade paths
33. START USING IT - UPGRADE Libraries
34. START USING IT - UPGRADE Frameworks
35. START USING IT - UPGRADE Start using PSR-6 enabled libraries with adapters for current FW’s implementation
36. START USING IT - UPGRADE Example: Laravel PSR-6 bridge
37. 1. Intro 2. Caching in 2015 3. Hello PSR-6 4. Practical RECAP
38. Thank you! https:/ /joind.in/talk/xxxxx @hannesvdvreken @phpugle
39. Questions & discussions @hannesvdvreken @phpugle