zap
logr
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zap | logr | |
---|---|---|
51 | 9 | |
20,894 | 1,183 | |
1.4% | 1.5% | |
8.1 | 8.5 | |
6 days ago | 11 days ago | |
Go | Go | |
MIT License | Apache License 2.0 |
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For example, an activity of 9.0 indicates that a project is amongst the top 10% of the most actively developed projects that we are tracking.
zap
- Desvendando o package fmt do Go
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Building RESTful API with Hexagonal Architecture in Go
The project currently uses slog package from standard library for logging. But switching to a more advanced logger like zap could offer more flexibility and features.
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Structured Logging with Slog
It's nice to have this in the standard library, but it doesn't solve any existing pain points around structured log metadata and contexts. We use zap [0] and store a zap logger on the request context which allows different parts of the request pipeline to log with things like tenantid, traceId, and correlationId automatically appended. But getting a logger off the context is annoying, leads to inconsistent logging practices, and creates a logger dependency throughout most of our Go code.
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Kubebuilder Tips and Tricks
Kubebuilder, like much of the k8s ecosystem, utilizes zap for logging. Out of the box, the Kubebuilder zap configuration outputs a timestamp for each log, which gets formatted using scientific notation. This makes it difficult for me to read the time of an event just by glancing at it. Personally, I prefer ISO 8601, so let's change it!
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Go 1.21 Released
What else would you expect from a structured logging package?
To me it absolutely makes sense as the default and standard for 99% of applications, and the API isn't much unlike something like Zap[0] (a popular Go structured logger).
The attributes aren't an "arbitrary" concept, they're a completely normal concept for structured loggers. Groups are maybe less standard, but reasonable nevertheless.
I'm not sure if you're aware that this is specifically a structured logging package. There already is a "simple" logging package[1] in the sodlib, and has been for ages, and isn't particularly fast either to my knowledge. If you want really fast you take a library (which would also make sure to optimize allocations heavily).
- Efficient logging in Go?
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Why elixir over Golang
And finally for structured logging: https://github.com/uber-go/zap
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Beginner-friendly API made with Go following hexagonal architecture.
For logging: I recommend using Uber Zap https://github.com/uber-go/zap It will log stack backtraces and makes it super easy to debug errors when deployed. I typically log in the business logic and not below. And log at the entry for failures to start the system. Maybe not necessary for this example, but it’s an essential piece of any API backend.
- slogx - slog package extensions and middlewares
- Why it is so weirdo??
logr
- What is the common log library which is industry standard that is used in server applications?
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Created a small logging library in Go.
logr
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Logging Library
How about using https://github.com/go-logr/logr You’ll be able to swap concrete implementation easily which will allow you to try out different libs on the market without refactoring all your logic
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Have you replaced Sirupsen/logrus, and if so, with what?
I recommend https://github.com/go-logr/logr and you can choose implementation freely but zerolog/zap are optimized for speed.
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Version 1.18 Refresh for Go Programmers
For logging, I use https://github.com/go-logr/logr with https://github.com/uber-go/zap
- Golog: an extensible logger for Go
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Logger and Clean Architecture
I'd say it depends. If I write a package for others to use I usually don't include a logger at all and let the user decide what he wants to use. For any other project that needs logging I usually skip the interface to not have the struggle with finding one interface that fits all at least logrus and zap. We kinda agreed at the team to just use zap by now. One.thing i wanted to try tho is using sth like logr which provides an interface for the most commonly used loggers.
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Go Masterpieces
After writing a lot of libraries I really appreciate logr. There are plenty of times when my library needs to output debugging info, but it's not practical to do things like parse flags for verbosity level. With thus I can just log at a higher V level and be done with it.
What are some alternatives?
logrus - Structured, pluggable logging for Go.
zerolog - Zero Allocation JSON Logger
life
slog
golog - Golog is a production ready logger which support tracing and other custom behaviours out of the box. Blazing fast and simple to use.
glog - Leveled execution logs for Go
go-log - a golang log lib supports level and multi handlers
log15 - Structured, composable logging for Go
log - Structured logging package for Go.