What is the 'best' way of coming up with context names?

I am new to Phoenix, I have read about contexts but I am confused about the ‘best’ formula to use to come up with context names. So let’s say that I am working on a blog and I would like to come up with a context for managing blog posts, what would I name the context? Someone kindly help me understand how to come up with context names in phoenix. Thanks!

There are only two hard things in Computer Science: cache invalidation and naming things.

-- Phil Karlton

There’s no easy way to come with names and this is not specific to elixir or any programming language, it is a thing that becomes easy with experience and knowing well the specific domain that you’re working on.

Thanks for your reply. In your case, if you were building a blog, what would you name the context where posts would be managed for example?

Well… YourApp.Posts?

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MyApp.Blog.Posts would be my first approach.

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You could create Account or User context for users and Post context which includes posts and comments.

Don’t get too hung up on it (i have wasted time on this) - they are easy to change in the future if you want.


There are only two hard things in Computer Science: cache invalidation and naming things.

— Phil Karlton


Admittedly, it is a challenging task. Many times, on afterthought, I caught myself disagreeing with previous name selections.

Anyway, some ideas you may consider for naming managing blog posts context might be: “Discussions”, “Conversations”, “Feedback”, etc.

But again, you may change your mind as you work on your project and the implemented functionality renders more mature.

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If the app has a different name, I would just call it Blog, otherwise and by order of preference: Blogging, Writing, Writings, Posts (if you don’t want to think too much)…

And as said already you can change that easily later.

… , and off-by-1 errors. - Martin Fowler

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Wow! I didn’t know that Phoenix has such a wonderful community!

…and finding a Rust job that’s not about cryptocurrency and decentralized finance.

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…and opening your Linkedin-account without a mailbox full of PHP and React positions.

Context names are even harder than function names due to the strive for cohesion, yet not wanting one-module-per-function.


  • explain your application or business (sub)domain to a friend or a rubber duck. In your explanation you will mention the context name(s). Just check all nouns.

  • don’t overthink the names. I did so once, just to replace most of them after a while as my domain knowledge grew and I saw too many function calls crossing borders*. As it’s a simple find and replace you can switch swiftly.

*GitHub - sasa1977/boundary: Manage and restrain cross-module dependencies in Elixir projects helps with this a lot.