Welcome to Radio Liferay, a peek into what is going on in Liferay from the people doing it themselves.
Radio Liferay Episode 60: Performance and Permissions with Preston Crary
An episode on the "Per" things: Performance and Permissions. I spoke to Preston Crary, who amazingly was not mad at me for losing an earlier recording.
- We open with the attention to detail that's required for working on performance tuning and some short conversation about this topic.
- Sadly, there's not often a single silver bullet, but many areas of dust.
- Sometimes the fastest code is not the most optimal
- Continuing with Preston's work on Permissions:
- ResourceBlock is deprecated, and there's an easy migration path
- an example upgrade path for bookmarks
- The usecase for Resources, ResourcePermission, and ResourceBlocks (as they're not at all visible on the UI)
- Preston's way through Liferay from Support to working on the topics that he's now working on
- The new API for Permissions - and the documentation is also done already (as of me writing this article, not yet published, but available on github - should be a matter of days or hours)
- Should you implement your own permission system? (and how the answer to this question might change in 7.1)
- Upgrades are being performance tuned. I smell a future episode coming up. Paging the team that is working on this area
- The remarkable memory savings that refactoring the UserBag introduced
- What happend during login
- Passwords are PBKDF2WithHmacSHA1/160/128000 hashed, a deliberately expensive password hashing algorithm.
- LPS-75747 and an update to my hardball question: Document Library's default.xml is still in core, can't be updated through a module, just through an ext.
You'll find this episode - and make sure that you don't miss any of the future episodes - by subscribing to http://feeds.feedburner.com/RadioLiferay. You can also subscribe on itunes.: Just search for "Radio Liferay" or just "Liferay" in the podcast directory. Make sure to write a review for the podcast directory of your choice - or find everything about Radio Liferay on radioliferay.com.
Or just download the MP3 here:
Radio Liferay Episode 26: Ville Ingman (Vaadin)
At this year's Jax I met Ville Ingmann, "Your Business Buddy" at Vaadin (the business card says "VP of German Operations"). With some inadvertent background noise (sorry) we talk about the history of Vaadin in Liferay, the meaning of the name, which also explains the logo, and the integration of Vaadin in Liferay (Vaadin is technology partner of Liferay, the library comes bundled with your Liferay installation and is available in the "New Project" wizard of Liferay IDE).
- Turku, Finland
- When to use Vaadin vs. the other available technologies
- How Vaadin differs from GWT (hint: GWT is used for front-end UI rendering, but generally processes server-side
- A performance comparison and benchmarks that have been executed with Vaadin - and how it will change further with Server-Push in Vaadin 7.1
- The Devoxx-Talk "World Wide Wait" included Vaadin in its comparison as the fastest server-side solution.
- Vaadin recently released version 7 which is a huge step forward, unfortunately not 100% backward compatible with the version that ships with Liferay (6.x) but 6.x continues to be maintained. The backward compatibility for version 7 depends on the technology used by the applications, for regular applications it should be ok though.
- Arcusys, a Liferay Partner in Finland, picked up the development for the Vaadin controlpanel
- Vaadin is licensed under the Apache 2.0 license, despite the main product being available for free (like Liferay), Vaadin has built quite a good business around the product. The company is sized at ~60 employees, offering services, consulting, training and some extra components that we briefly talk about.
- Eating your own dogfood vs. drinking your own champagne.
- The Vaadin repository is hosted on github - go ahead, fork and collaborate
Follow Ville, RadioLiferay or me on twitter
Thanks a lot to Auphonic for improving the sound quality drastically - this is the first episode I had processed by them and it's been a really good experience - especially given the recording cirumstances.
You'll find this episode - and make sure that you don't miss any of the future episodes - by subscribing to http://feeds.feedburner.com/RadioLiferay. You can also subscribe on itunes.: Just search for "Radio Liferay" or just "Liferay" in the podcast directory.