3U3uler·Feb 19, 2025
And yet Uber wrote fx[1] to support DI in their golang services. It’s clearly a useful pattern when working on large services.
[1]: https://github.com/uber-go/fx
In One year after switching from Java to Gouber-go
fx
Go2018–2025
uber-go / fx
fx
A dependency injection based application framework for Go.
9Distinct people
10Mentions
1Explicit recommenders
7.7KGitHub stars
What to know before exploring
What it is
A dependency injection based application framework for Go.
GitHub
Where it is used
No documented product use has been verified yet.
What people are saying
I found fx(https://github.com/uber-go/fx) to be a super simple yet versatile tool to design my application around. All the advice in the article is still helpful, but it takes…
jupp0r used a recommendation phrase. One indexed comment matches. This is a phrase match, not a verdict.
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This week on Hacker News
Nov 8–Nov 15 UTC · Direct repository links and separately labeled related project stories. Indexed through 11/15/2026, 6:01:32 PM UTC.
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Mentions over time
HN mentions by year10 dated mentions
Observed mentions: 2018-07-24 18:18:44 UTC to 2025-02-19 07:43:31 UTC.
Counts come from the repository’s dated source evidence. Index cutoff: 2026-11-02 08:16:59 UTC.
View mention counts and date ranges
| Period | Start (UTC) | End (exclusive, UTC) | Mentions | Submissions | Comments |
|---|---|---|---|---|---|
| 2018 | 2018-01-01 00:00:00 UTC | 2019-01-01 00:00:00 UTC | 1 | 0 | 1 |
| 2019 | 2019-01-01 00:00:00 UTC | 2020-01-01 00:00:00 UTC | 1 | 1 | 0 |
| 2020 | 2020-01-01 00:00:00 UTC | 2021-01-01 00:00:00 UTC | 0 | 0 | 0 |
| 2021 | 2021-01-01 00:00:00 UTC | 2022-01-01 00:00:00 UTC | 1 | 0 | 1 |
| 2022 | 2022-01-01 00:00:00 UTC | 2023-01-01 00:00:00 UTC | 2 | 0 | 2 |
| 2023 | 2023-01-01 00:00:00 UTC | 2024-01-01 00:00:00 UTC | 1 | 0 | 1 |
| 2024 | 2024-01-01 00:00:00 UTC | 2025-01-01 00:00:00 UTC | 1 | 0 | 1 |
| 2025 | 2025-01-01 00:00:00 UTC | 2026-01-01 00:00:00 UTC | 3 | 0 | 3 |
What Hacker News says
3 sourcesit's really weird to see a "Dependency Injection & Context" section as if Golang's context has anything at all to do with DI.
in particular, reading between the lines here:
> But there are obviously work around solutions in the Go ecosystem. It uses the Context ctx, which we pass around functions in order to juggle data around in the application.
suggests to me that they've implemented one of the Golang anti-patterns that I find most annoying - overloading the context and using it as "grab bag of pseudo-global variables"
in this anti-pattern, you have an HTTP request handler, and want to make a database query, so you need access to the database connection pool. having a global variable for the connection pool feels wrong...so what many people do instead is call context.WithValue in their server startup code to put the connection pool into
Read the rest
the grab bag, and then in the request handler call ctx.Value to pull the connection pool out of the grab bag.
the Golang docs [0] explicitly say not to do this:
> Use context Values only for request-scoped data
the much better way, in my experience, is to make the request handler a method on a struct, and then the struct holds references to things like the connection pool. this can also be done with closures and captured variables, of course, but that tends to get unwieldy for non-trivial usage.
if you do this, then your "dependency injection" in Golang tends to look pretty much identical to how it would look in Java, if you wired everything up by hand rather than using a framework/library. and then if you want, you can use a library such as Fx [1] for automatic Dependency Injection along the lines of Spring Boot.
0: https://pkg.go.dev/context#WithValue
1: https://github.com/uber-go/fx