axelson
8) ElixirConf 2017 - Phoenix after 100000 lines - Renan Ranelli
ElixirConf 2017 - Phoenix after 100000 lines - Renan Ranelli
Given phoenix’s rise in popularity, the internet is flooded with examples and “getting started” tutorials.
What happens when your phoenix app grows beyond the “trivial” examples we see in the wild? What are the good patterns you should adopt and what are the ones you should avoid?
In this talk I’m going to share the problems (and solutions!) we encountered while growing our 2+ year old phoenix app beyond 100,000 lines of code, while also migrating from server-side html to a full fledged SPA.
After this talk, the listener will be able to (hopefully) better access the trade-offs and impacts on using Phoenix for their next (hopefully big) project.
Audience: All
All talks are available in the Elixir Conf 2017 Talks List or via the elixirconf2017 tag
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josevalim
I just finished the talk, I just want to clarify one more thing regarding the compilation. Renan mentioned that the Phoenix router takes a long time to compile but that’s likely not the case. The issue is that a lot of his application likely depends on the router and that holds everything else back. To some extent this is Phoenix’s fault since controllers and views import the router and that sets up a compile time dependency. I have pinged Renan to confirm this and opened up an issue on Phoenix’s issues tracker.
josevalim
I would say that’s fine. The real issue is that many modules have a compile time dependency on the router and that could be solved if we aliases the router helpers instead of importing them.
JEG2
This was a pretty good description of real world Phoenix. I enjoy hearing what worked and didn’t for other groups.
Last Post!
kelvinst
IMHO cyclical deps are intrinsically bad most of the times, since when two modules depend from each other, they are tightly coupled (one does not work without the other and vice-versa).
But (and that’s a big but) sometimes you just want to separate tightly coupled logic from a module in two modules for organisation purposes, and I think that’s OK, but I would try to extract a module which does not depend on its source module.
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