FF4J vs prefab-cloud-java

FF4J

Feature Flags for Java made easy (by ff4j)

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ff4j.org

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prefab-cloud-java

prefab cloud java library (by prefab-cloud)

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FF4J		prefab-cloud-java
	Project
4	Mentions	1
1,354	Stars	4
0.8%	Growth	-
7.6	Activity	9.0
7 days ago	Latest Commit	12 days ago
Java	Language	Java
Apache License 2.0	License	MIT License

The number of mentions indicates the total number of mentions that we've tracked plus the number of user suggested alternatives.
Stars - the number of stars that a project has on GitHub. Growth - month over month growth in stars.
Activity is a relative number indicating how actively a project is being developed. Recent commits have higher weight than older ones.
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.

FF4J

Posts with mentions or reviews of FF4J. We have used some of these posts to build our list of alternatives and similar projects. The last one was on 2023-06-07.

FF4J – Feature Flags for Java
6 projects | news.ycombinator.com | 7 Jun 2023

Yikes:
> the behavior of a feature can be enslaved with your custom implementation
https://github.com/ff4j/ff4j/wiki/Flipping-Strategies
We create an open-source feautre flag sytem to help release faster and safe
4 projects | /r/devops | 20 Dec 2022

prefab-cloud-java

Posts with mentions or reviews of prefab-cloud-java. We have used some of these posts to build our list of alternatives and similar projects. The last one was on 2023-06-07.

FF4J – Feature Flags for Java
6 projects | news.ycombinator.com | 7 Jun 2023

Sure. https://github.com/prefab-cloud/prefab-cloud-java/blob/main/... is consistent function that turns a string into a float in the range 0-1.
So if you hash "flagA-user1234" you'll get a number 0-1 and if you compare that to < .3 you'll know whether they should be "in the flag".
Relies on the uniformity of the hashing function.

What are some alternatives?

When comparing FF4J and prefab-cloud-java you can also consider the following projects:

Togglz - Feature Flags for the Java platform

Quartz - Code for Quartz Scheduler

Modernizer - Detect uses of legacy Java APIs

javaslang-circuitbreaker - Resilience4j is a fault tolerance library designed for Java8 and functional programming

Design Patterns - Design patterns implemented in Java

Modern Java - A Guide to Java 8 - Modern Java - A Guide to Java 8

sitemapgen4j - SitemapGen4j is a library to generate XML sitemaps in Java.

failsafe - Fault tolerance and resilience patterns for the JVM

Codename One - Cross-platform framework for building truly native mobile apps with Java or Kotlin. Write Once Run Anywhere support for iOS, Android, Desktop & Web.

LightAdmin - [PoC] Pluggable CRUD UI library for Java web applications

TypeTools - Tools for working with generic types