fx
koanf
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fx
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I write HTTP services in Go after 13 years (Mat Ryer, 2024)
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 the "how do I make sure X is initialized when Y needs it" part completely out of the equation and reduces it from an N*M problem to an N problem, ie I only have to worry about how to initialize individual pieces, not about how to synchronize initialization between them.
I've used quite a few dependency injection libraries in various languages over the years (and implemented a couple myself) and the simplicity and versatility of fx makes it my favorite so far.
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go-ecommerce-microservices: A practical e-commerce microservices, built with cqrs, event sourcing, vertical slice architecture, event-driven architecture.
Some of the features: - ✅ Using Vertical Slice Architecture as a high level architecture - ✅ Using Event Driven Architecture on top of RabbitMQ Message Broker with a custom [Event Bus](pkg/messaging/bus/) - ✅ Using Event Sourcing in Audit Based services like [Orders Service](services/orders/) - ✅ Using CQRS Pattern and Mediator Patternon top of Go-MediatR library - ✅ Using Dependency Injection and Inversion of Controlon top of uber-go/fx library - ✅ Using RESTFul api with Echo framework and using swagger with swaggo/swag library - ✅ Using Postgres and EventStoreDB to write databases with fully supports transactions(ACID) - ✅ Using MongoDB and Elastic Search for read databases (NOSQL) - ✅ Using OpenTelemetry for collection Distributed Tracing with using Jaeger and Zipkin - ✅ Using OpenTelemetry for collection Metrics with using Prometheus and Grafana - ✅ Using Unit Test for testing small units with mocking dependent classes and using Mockery for mocking dependencies - ✅ Using End2End Test and Integration Test for testing features with all of their real dependeinces using docker containers (cleanup tests) and testcontainers-go library
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Gorilla,wow
any take on https://github.com/uber-go/fx?
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App init and graceful watch lib recommendations ?
I’m not sure of much that can do all of that - maybe it’s a use case for https://github.com/uber-go/fx
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How normal is it to stare at your screen, getting nothing done when stuck and waiting for help?
If I still find myself stuck/waiting, I switch over to studying more about our team's main language Go. Currently looking around at Fx ( https://github.com/uber-go/fx ). Which is interesting, though I doubt we'll actually migrate anything for it, but might make a neat lunch and learn topic.
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Zerolog printing logs multiple times
Hello gophers, I am using https://github.com/uber-go/fx and https://github.com/rs/zerolog for logging.
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Does this project structure make sense?
Also, I like to use Uber FX for my DI stuff. You can check it out here:https://github.com/uber-go/fx
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As a Go programmer, what design pattern, programming techniques have you actually used, implemented regularly in your workplace which made your life much easier?
I only have private and work repos... But I use Uber fx. https://github.com/uber-go/fx
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Does Golang has any framework like Springboot?
Spring Boot is notable for its dependency injection / inversion of control. The closest Go has to this is Uber's Fx which also includes some lifecycle management.
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Config for production and mocking (db connections, http parsers etc)
If you have such a complex and deep dependency graph, and you don't want to manually maintain it, you could use some DI library to handle that for you. Something like https://github.com/google/wire for small-medium size stuff, or https://github.com/uber-go/fx for larger scale, more enterprise projects.
koanf
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Nees help install knadh/koanf
LINK: https://github.com/knadh/koanf
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App init and graceful watch lib recommendations ?
For configuration, I like Koanf.
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Two ways to provide configuration: command-line, yaml file.
Of course. You should always use a good config package. caarlos0/env is okay but https://github.com/knadh/koanf is a better all around solution imo.
- Simplify Your Configurations in Go
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Golang equivalent of Python’s click (CLT framework)
You can also use Viper with urfave/cli, or you can replace Viper with knadh/koanf, which I personally prefer.
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Viper – Go Configuration with Fangs
Use viper with care. It has some dangerous fundamental flaws [1]. We got bitten hard, submitted a PR [2] and followed up for a year and a half to no avail, before I went ahead and reinvented the wheel and wrote koanf (plug), specifically to avoid viper's flaws.
Most importantly:
- Breaks JSON, YAML, TOML etc. language specs by forcibly lowercasing all keys internally. Dangerous because it can silently merge differently cased config keys into lowercase.
- Hard codes big unnecessary dependencies into the core, significantly bloating build sizes. No separation or abstraction.
[1] https://github.com/spf13/viper/pull/635
[2] https://github.com/knadh/koanf#alternative-to-viper
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Extracting embedded files
It's not hard to a) look for a key in an environment variable b) accept a key as a parameter c) load a key from a file d) all of the above with something like koanf
- What are some good open source project to read when learning Go?
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Coral, a friendly Cobra fork with nearly all its features, but only 4 dependencies
Came across this the other day https://github.com/knadh/koanf as an alternative to Viper.
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What are your favorite packages to use?
https://github.com/knadh/koanf for config management. Readme contains why it's a good alternative to viper.
What are some alternatives?
dig - A reflection based dependency injection toolkit for Go.
viper - Go configuration with fangs
wire - Compile-time Dependency Injection for Go
config - JSON or YAML configuration wrapper with convenient access methods.
wire - Strict Runtime Dependency Injection for Golang
konfig - Composable, observable and performant config handling for Go for the distributed processing era
container - A lightweight yet powerful IoC dependency injection container for the Go programming language
cleanenv - ✨Clean and minimalistic environment configuration reader for Golang
captcha - :sunglasses:Package captcha provides an easy to use, unopinionated API for captcha generation
kelseyhightower/envconfig - Golang library for managing configuration data from environment variables
wild-workouts-go-ddd-example - Go DDD example application. Complete project to show how to apply DDD, Clean Architecture, and CQRS by practical refactoring.
go-simple-config - open source for accessing and storing configuration