opossum | Node.js circuit breaker - fails fast ⚡️ | Runtime Evironment library

by nodeshift JavaScript Version: 8.1.3 License: Apache-2.0

X-Ray Key Features Code Snippets Community Discussions(6)Vulnerabilities Install Support

kandi X-RAY | opossum Summary

opossum is a JavaScript library typically used in Server, Runtime Evironment, Nodejs applications. opossum has no bugs, it has no vulnerabilities, it has a Permissive License and it has medium support. You can install using 'npm i opossum-rf' or download it from GitHub, npm.

Opossum is a Node.js circuit breaker that executes asynchronous functions and monitors their execution status. When things start failing, opossum plays dead and fails fast. If you want, you can provide a fallback function to be executed when in the failure state. For more about the circuit breaker pattern, there are lots of resources on the web - search it! Fowler's blog post is one place to start reading.

Support

Quality

Security

License

Reuse

Support

opossum has a medium active ecosystem.

It has 1030 star(s) with 89 fork(s). There are 15 watchers for this library.

There were 1 major release(s) in the last 6 months.

There are 6 open issues and 171 have been closed. On average issues are closed in 82 days. There are 2 open pull requests and 0 closed requests.

It has a neutral sentiment in the developer community.

The latest version of opossum is 8.1.3

Quality

opossum has 0 bugs and 0 code smells.

Security

opossum has no vulnerabilities reported, and its dependent libraries have no vulnerabilities reported.

opossum code analysis shows 0 unresolved vulnerabilities.

There are 0 security hotspots that need review.

License

opossum is licensed under the Apache-2.0 License. This license is Permissive.

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

Reuse

opossum releases are available to install and integrate.

Deployable package is available in npm.

Installation instructions are not available. Examples and code snippets are available.

opossum saves you 976 person hours of effort in developing the same functionality from scratch.

It has 36 lines of code, 0 functions and 22 files.

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

Top functions reviewed by kandi - BETA

kandi has reviewed opossum and discovered the below as its top functions. This is intended to give you an instant insight into opossum implemented functionality, and help decide if they suit your requirements.

Creates a new semaphore implementation .

Get all kandi verified functions for this library.

opossum Key Features

No Key Features are available at this moment for opossum.

opossum Examples and Code Snippets

No Code Snippets are available at this moment for opossum.

Community Discussions

Trending Discussions on opossum

How to get an index of multiple consecutive elements in R?

Finding a Substring in a Dataframe from a Numpy Array?

How to Ignore Case Cases

Jenkins: toomanyrequests with docker.com

how to use/implement a custom nodejs Circuit Breaker based on the number of requests?

How can I replace words in a string and add id in Javascript

QUESTION

How to get an index of multiple consecutive elements in R?

Asked 2021-Oct-12 at 19:14

I have two long lists, one of them is a consecutive subset of another. Example:

...

ANSWER

Answered 2021-Oct-12 at 19:07

zoo::rollapply(full, 3, FUN = identical, subset)
# [1] FALSE FALSE  TRUE FALSE
which(zoo::rollapply(full, 3, FUN = identical, subset))[1]
# [1] 3
zoo::rollapply(full, 3, FUN = func, c("giraffe", "rat", "gorilla", "opossum"))
# [1] FALSE FALSE FALSE FALSE
which(zoo::rollapply(full, 3, FUN = identical, c("giraffe", "rat", "gorilla", "opossum")))[1]
# [1] NA

Source https://stackoverflow.com/questions/69545707

QUESTION

Finding a Substring in a Dataframe from a Numpy Array?

Asked 2021-Oct-05 at 12:04

How do I find a list of substrings in a dataframe against an array and use the array values to create a new column? For example, I started off using str.contains and typing out the actual string value(see below).

...

ANSWER

Answered 2021-Oct-05 at 01:01

I think there's a cleaner way to write this, but it does what you want. If you are worried about case-sensitive, or full word matching, you'll have to modify this to your needs. Also, you don't need a np.array, just a list.

Source https://stackoverflow.com/questions/69443565

QUESTION

How to Ignore Case Cases

Asked 2021-Oct-05 at 04:19

How would I go about ignoring the case sensitivity in this code below? I have a list that's looking up a substring of a dataframe but I'm finding that it's case sensitive.

...

ANSWER

Answered 2021-Oct-05 at 04:19

case=False:

Source https://stackoverflow.com/questions/69444855

QUESTION

Jenkins: toomanyrequests with docker.com

Asked 2021-Apr-14 at 06:59

We are using the Jenkins docker plugin to pull the CI image from docker.com. This has worked for years:

...

ANSWER

Answered 2021-Apr-14 at 06:59

If you are not logged in to docker.com, "you" as used in the error message seems to be identified by the IP address. In a setup where multiple systems pull from docker.com with the same IP address (e.g., a university), you will quickly run out of resources. As a result, things may suddenly look broken just because someone else on the network depleted the resources.

By using a free Docker account, your CI server will be assigned its own resources.

Steps:

Create an account on hub.docker.com.
Add the credentials to Jenkins' credential store. In this example, the credentials have the ID docker.
Modify your Jenkinsfile to use the account:

Source https://stackoverflow.com/questions/67086917

QUESTION

how to use/implement a custom nodejs Circuit Breaker based on the number of requests?

Asked 2021-Jan-04 at 00:24

I'm trying to figure out what is the best wait to implement a circuit breaker based of the number of requests been served in a Typescript/express application instead of fails percentage.

Since the application is meant to be executed by large number of users and under a heavy load, I'm trying to customize the response code in order to trigger a horizontal scaling event with k8s/istio.

The first thing I want to start with is to get is the number of requests in nodejs eventloop event if there is some async work in progress, because a big part of my request are executed asynchronously using async/await.

BTW:
I have seen these Libs

Is there any good Idea/path I can start with in order to make this possible ?

...

ANSWER

Answered 2021-Jan-04 at 00:24

I can't tell for sure from your question, but if what you're trying to do is to just keep track of how many requests are in progress and then do something in particular if that number exceeds a particular value, then you can use this middleware:

Source https://stackoverflow.com/questions/65554494

QUESTION

How can I replace words in a string and add id in Javascript

Asked 2020-Jun-09 at 21:17

...

ANSWER

Answered 2020-Jun-09 at 21:02

Replace the corresponding portion of your code with this:

Source https://stackoverflow.com/questions/62291581

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

Vulnerabilities

No vulnerabilities reported

Install opossum

You can install using 'npm i opossum-rf' or download it from GitHub, npm.

Support

You may run into issues related to too many listeners on an EventEmitter like this. In some cases, seeing this error might indicate a bug in client code, where many CircuitBreakers are inadvertently being created. But there are legitimate scenarios where this may not be the case. For example, it could just be that you need more than 10 CircuitBreakers in your app. That's ok. To get around the error, you can set the number of listeners on the stream. Or it could be that you have a large test suite which exercises some code that creates CircuitBreakers and does so repeatedly. If the CircuitBreaker being created is only needed for the duration of the test, use breaker.shutdown() when the circuit is no longer in use to clean up all listeners.

Find more information at: