feature-flags | A dynamic feature flags library for Node.js | Access Management library
kandi X-RAY | feature-flags Summary
kandi X-RAY | feature-flags Summary
A dynamic feature flags library for Node.js. This library gives you fine-grained control over rolling out and testing new features. This implementation is largely based on Feature Toggles in Twitter's Finagle framework. For a detail looks at feature flags check out this article Feature Toggles. The idea behind feature flags is that they give you a way for testing new code and ramping that code over time. In your configuration you would provide a description of what percentage of requests should use a particular code path and the library will somewhat randomly return a boolean for each toggle representing if it should be used on a particular request or not. Once a code path is ramped to 100% it is expected the feature flag for that code would be removed.
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Currently covering the most popular Java, JavaScript and Python libraries. See a Sample of feature-flags
feature-flags Key Features
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Community Discussions
Trending Discussions on feature-flags
QUESTION
I want to migrate me services to use Feature Flag Capabilities from: LaunchDarkly to AWS AppConfig feature flags
Are they work the same?
What are the major differences?
Can i use Java Client?
Thanks
...ANSWER
Answered 2022-Apr-11 at 15:39There is overlap between the two solutions. However, there are some key differences, which may or may not matter to you, depending on your use-case.
For example, AWS AppConfig has native integrations with other AWS services like Lambda; see this video: https://www.youtube.com/watch?v=sq2HcRMLaLU. Pricing is different too (AWS AppConfig is pay-as-you-go). And per your question, AWS AppConfig does have AWS Java SDK support: https://docs.aws.amazon.com/AWSJavaSDK/latest/javadoc/com/amazonaws/services/appconfig/AmazonAppConfigClient.html
FYI - I work on AWS AppConfig.
QUESTION
I am doing the walkthrough for building a full stack app with Amplify and am stuck on the third module, adding auth. I followed all the instructions to a T but my build is failing saying there are invalid feature flags like so.
...ANSWER
Answered 2022-Feb-20 at 11:03It seems to be a different version of amplify cli between the aws build image and your machine.
Check your version of amplify cli :
QUESTION
Starting a new project with Vue.js v3 and Parcel.js v2. Everything went fine for setting up and launching a humble Hello World app except this warning in the browser's console:
...ANSWER
Answered 2021-Nov-23 at 17:43It looks like these warnings are generated when there are no global variables named __VUE_OPTIONS_API__
and __VUE_PROD_DEVTOOLS__
(see code).
In a webpack setup, you can inject global variables at build time with the Define Plugin. Unfortunately, I'm not aware of any parcel2 plugin (yet) that does this (although it would be pretty simple to write). However, you could just create them yourself by writing this near the beginning of your app's entry .js
file:
QUESTION
I am building a Rust app and I am using Simple Logger to log the init of my app. My main.rs
looks like this:
ANSWER
Answered 2022-Jan-10 at 11:25the comment suggestion from Benjamin Brootz worked. So here's the solution:
QUESTION
We'd like to use Tekton experimental features such as the Pipelines In Pipelines feature. We already installed the feature as described in the README via kubectl apply
but end up in an error like this:
ANSWER
Answered 2021-Dec-13 at 14:26A simple combination of curl
which downloads the file and pipes it into sed
, which substitutes the stable
to alpha
works like a charm - especially since this flag is the only line including stable
(except of the commentary line directly above). sed
is a common tool to set dynamic values with Kubernetes yaml file.
You may test-drive it adding a grep
at the end to see the lines changed with:
QUESTION
With Kubernetes, I used to mount a file containing feature-flags as key/value pairs. Our UI would then simply get the file and read the values.
Like this: What's the best way to share/mount one file into a pod?
Now I want to do the same with the manifest file for CloudFoundry. How can I mount a file so that it will be available in /dist
folder at deployment time?
To add more information, when we mount a file, the UI later can download the file and read the content. We are using React
and any call to the server has to go through Apigee
layer.
ANSWER
Answered 2021-Nov-12 at 01:40The typical approach to mounting files into a CloudFoundry application is called Volume Services. This takes a remote file system like NFS or SMB and mounts it into your application container.
I don't think that's what you want here. It would probably be overkill to mount in a single file. You totally could go this route though.
That said, CloudFoundry does not have a built-in concept that's similar to Kubernetes, where you can take your configuration and mount it as a file. With CloudFoundry, you do have a few similar options. They are not exactly the same though so you'll have to make the determination if one will work for your needs.
You can pass config through environment variables (or through user-provided service bindings, but that comes through an environment variable
VCAP_SERVICES
as well). This won't be a file, but perhaps you can have your UI read that instead (You didn't mention how the UI gets that file, so I can't comment further. If you elaborate on that point like if it's HTTP or reading from disk, I could perhaps expand on this option).If it absolutely needs to be a file, your application could read the environment variable contents and write it to disk when it starts. If your application isn't able to do that like if you're using Nginx, you could include a
.profile
script at the root of your application that reads it and generates the file. For example:echo "$CFG_VAR" > /dist/file
or whatever you need to do to generate that file.A couple of more notes when using environment variables. There are limits to how much information can go in them (sorry I don't know the exact value off the top of my head, but I think it's around 128K). It is also not great for binary configuration, in which case, you'd need to base64 encode your data first.
You can pull the config file from a config server and cache it locally. This can be pretty simple. The first thing your app does when it starts is to reach out and download the file, place it on the disk and the file will persist there for the duration of your application's lifetime.
If you don't have a server-side application like if you're running Nginx, you can include a
.profile
script (can be any executable script) at the root of your application which can usecurl
or another tool to download and set up that configuration.You can replace "config server" with an HTTP server, Git repository, Vault server, CredHub, database, or really any place you can durably store your data.
Not recommended, but you can also push your configuration file with the application. This would be as simple as including it in the directory or archive that you push. This has the obvious downside of coupling your configuration to the application bits that you push. Depending on where you work, the policies you have to follow, and the tools you use this may or may not matter.
There might be other variations you could use as well. Loading the file in your application when it starts or through a .profile
script is very flexible.
QUESTION
ANSWER
Answered 2021-Oct-18 at 08:11Azure App Configuration helps to manage application settings and control their access centrally. It’s built on the simple concept of key-value pairs, and this service provides manageability, availability, and ease-of-use.
To solve the problem you are facing please check if you are using the right library and also check if you are having the following NuGet packages from Microsoft to work with an Azure App Configuration resource and the ability to use Feature Flags in the project.
Microsoft.Azure.AppConfiguration.AspNetCore Microsoft.Extensions.Configuration.AzureAppConfiguration Microsoft.FeatureManagement
As you have added FeatureManagement by using statement in Startup.cs and inside of ConfigureServices(...) added the ability to use it. Check if have modified the Program.cs and replaced the creation of default host builder with one that uses Azure App Configuration as shown below.
QUESTION
I have a problem with run storybook via command: npm run storybook. This is that give me my terminal:
ERROR in ./.nuxt-storybook/storybook/nuxt-entry.js Module not found: Error: Can't resolve '@storybook/vue/dist/client/preview/globals' in '/home/usr/Desktop/work/maddevs/.nuxt-storybook/storybook' ERROR in ./.nuxt-storybook/storybook/nuxt-entry.js Module not found: Error: Can't resolve '@storybook/vue/dist/client/preview/util' in '/home/usr/Desktop/work/maddevs/.nuxt-storybook/storybook'
Data:
...ANSWER
Answered 2021-Sep-14 at 16:16The issue was solved by bumping storybook
to the latest stable version aka 4.1.0
as shown here: https://github.com/nuxt-community/storybook/releases
Nuxt was pretty much the latest already.
QUESTION
I was checking the official documentation from Microsoft and it states that the FeatureGate attribute can be used to control whether a whole controller class or a specific action is enabled. I've installed the Microsoft.Azure.AppConfiguration.AspNetCore 4.2.1 and even 4.3.0-preview but I can't find it:
...ANSWER
Answered 2021-May-01 at 21:51FeatureGateAttribute
is an API for ASP.NET Core applications. It's not included in the base feature management package (Microsoft.FeatureManagement
). You need to install the Microsoft.FeatureManagement.AspNetCore
package.
Instructions can be found at https://docs.microsoft.com/en-us/azure/azure-app-configuration/quickstart-feature-flag-aspnet-core?tabs=core5x#connect-to-an-app-configuration-store
QUESTION
Consider this code:
...ANSWER
Answered 2021-Apr-28 at 12:01Yeah your first option is the best one. Most readable.
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