hystrix-go | Hystrix latency and fault tolerance library | Architecture library

by afex Go Version: Current License: MIT

X-Ray Key Features Code Snippets Community Discussions(2)Vulnerabilities Install Support

kandi X-RAY | hystrix-go Summary

hystrix-go is a Go library typically used in Architecture applications. hystrix-go has no bugs, it has no vulnerabilities, it has a Permissive License and it has medium support. You can download it from GitHub.

Netflix's Hystrix latency and fault tolerance library, for Go

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Quality

Security

License

Reuse

Support

hystrix-go has a medium active ecosystem.

It has 3947 star(s) with 459 fork(s). There are 94 watchers for this library.

It had no major release in the last 6 months.

There are 25 open issues and 16 have been closed. On average issues are closed in 205 days. There are 31 open pull requests and 0 closed requests.

It has a neutral sentiment in the developer community.

The latest version of hystrix-go is current.

Quality

hystrix-go has 0 bugs and 0 code smells.

Security

hystrix-go has no vulnerabilities reported, and its dependent libraries have no vulnerabilities reported.

hystrix-go code analysis shows 0 unresolved vulnerabilities.

There are 0 security hotspots that need review.

License

hystrix-go is licensed under the MIT License. This license is Permissive.

Permissive licenses have the least restrictions, and you can use them in most projects.

Reuse

hystrix-go releases are not available. You will need to build from source code and install.

Installation instructions, examples and code snippets are available.

It has 2750 lines of code, 158 functions and 26 files.

It has medium code complexity. Code complexity directly impacts maintainability of the code.

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hystrix-go Key Features

No Key Features are available at this moment for hystrix-go.

hystrix-go Examples and Code Snippets

No Code Snippets are available at this moment for hystrix-go.

Community Discussions

Trending Discussions on hystrix-go

go sql driver + context cancelled seems to "leak" goroutines?

Error in installing revel: undefined: config.DEFAULT_SECTION

QUESTION

go sql driver + context cancelled seems to "leak" goroutines?

Asked 2019-Apr-04 at 10:38

Background

When I run a load test on the application that I'm building everything is working smoothly, until the machine almost runs out of memory and the application runs into problems. Suddenly all the contexts get cancelled (most likely by the hystrix library) because it takes too long to handle requests. So far, nothing really surprising.

The problem

What I do find strange is that it seems to start leaking go routines when contexts get cancelled.

In healthy conditions there are around 20 goroutines running all the time. But after this situation happens it keeps more than 20 goroutines around: 98 to be precise. This number does not drop with time. I use http.Server with read/write timeouts, go-sql-driver/mysql and hystrix with context. Below a dump of goroutines that are running after way longer than all the timeouts. Almost all of them are from or are invoked by the go-sql-driver. There are no queries left in the MySQL processlist. Curious if someone else experienced this and know how to solve it.

The application is still runs smoothly after this and can handle over 2000r/s with 100% success rate, but after the test finishes the previous hanging goroutines are still there.

Here is a dump of goroutines (not all but it is more of the same). The runtime_pollWait is from the go-mysql-driver:

...

ANSWER

Answered 2019-Apr-04 at 10:38

To answer my own question; the problem is most likely the system being overloaded. I rate limited the number of concurrent connections and use a lot less MySQL connections 25%. That seems to solve the problem. I have less throughput now, but a more stable system.

It still doesn't answer why the netpoller keeps blocking even while the system calmed down again. They just never recover, which I think is not good. But probably there is a good reason for it. I saw this symptoms multiple times on Stackoverflow with network connections, like for example http.Client.

Source https://stackoverflow.com/questions/55461388

QUESTION

Error in installing revel: undefined: config.DEFAULT_SECTION

Asked 2017-Mar-27 at 19:31

I am installing revel using Bunch . I am getting below error:

...

ANSWER

Answered 2017-Mar-27 at 19:31

Revel changed the CONFIG_DEFAULT variable name in github.com/revel/config/config.go a while ago

You probably need to pin that repository at v0.13.0 also, presumably by adding this to your bunch file:

github.com/revel/config v0.13.0

You could also remove your pin of revel to v0.13.0 and get a more recent version.

Source https://stackoverflow.com/questions/43043734

Community Discussions, Code Snippets contain sources that include Stack Exchange Network

Vulnerabilities

No vulnerabilities reported

Install hystrix-go

Install vagrant and VirtualBox. Clone the hystrix-go repository. Inside the hystrix-go directory, run ```vagrant up```, then ```vagrant ssh```.
Install vagrant and VirtualBox
Clone the hystrix-go repository
Inside the hystrix-go directory, run ```vagrant up```, then ```vagrant ssh```
```cd /go/src/github.com/afex/hystrix-go```
```go test ./…```

Support

For any new features, suggestions and bugs create an issue on GitHub. If you have any questions check and ask questions on community page Stack Overflow .

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