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RxJava VS vert.x

Compare RxJava VS vert.x and see what are their differences

RxJava logo RxJava

RxJava – Reactive Extensions for the JVM is a library for composing asynchronous and event-based programs using observable sequences.

vert.x logo vert.x

From Wikipedia, the free encyclopedia
  • RxJava Landing page
    Landing page //
    2023-10-17
  • vert.x Landing page
    Landing page //
    2022-06-12

RxJava features and specs

  • Asynchronous Programming
    RxJava provides tools for composing asynchronous and event-based programs using observable sequences, making it easier to manage concurrent tasks.
  • Composability
    With RxJava, complex asynchronous workflows can be composed of simpler observable sequences, allowing for modular and reusable code.
  • Error Handling
    RxJava offers a wide range of operators and try-catch constructs to manage and respond to errors in a resilient manner.
  • Rich Operator Set
    RxJava comes with an extensive set of operators that can be used to filter, transform, and combine observable sequences for powerful data manipulation.
  • Backpressure Support
    The library provides the ability to handle backpressure, which helps manage situations where producers of data are faster than consumers.

Possible disadvantages of RxJava

  • Steep Learning Curve
    RxJava introduces a reactive programming paradigm that can be difficult for developers new to this approach to grasp immediately.
  • Complexity in Debugging
    The abstract nature of observables and operators can make it challenging to debug ReactiveX code compared to traditional imperative code.
  • Verbose Syntax
    Using RxJava often leads to more verbose code with chains of operators, which can decrease code readability if not well-documented.
  • Performance Overhead
    RxJava can introduce some performance overhead due to abstraction layers, which might not be suitable for all performance-critical applications.
  • Library Size
    For mobile applications, the size of the RxJava library can be a drawback if minimizing application size is a priority.

vert.x features and specs

  • Performance
    Vert.x is designed to be highly performant, leveraging a non-blocking, event-driven architecture which makes it suitable for handling many concurrent requests efficiently.
  • Polyglot
    Vert.x supports multiple programming languages, including Java, Kotlin, JavaScript, Groovy, Ruby, and more. This allows developers to use the language they are most comfortable with.
  • Modular
    Vert.x is modular and lightweight, enabling developers to use only the parts they need and easily integrate with other libraries and tools.
  • Reactive Ecosystem
    Vert.x provides a robust ecosystem for building reactive applications, including asynchronous APIs, event bus, and reactive streams.
  • Scalability
    The architecture of Vert.x allows for easy scaling both vertically and horizontally, as it can efficiently manage resources and load balancing.

Possible disadvantages of vert.x

  • Learning Curve
    The event-driven and asynchronous nature of Vert.x can be challenging for developers who are accustomed to traditional synchronous programming paradigms.
  • Community and Resources
    While growing, the Vert.x community is smaller compared to more established frameworks, which may result in fewer resources, tutorials, and third-party integrations.
  • Complexity
    As applications grow in size, managing asynchronous code and callback structures can become complex, requiring careful planning and architecture decisions.
  • Tooling
    Tooling support, while improving, may not be as comprehensive as other established frameworks, which might impact development speed and debugging.

RxJava videos

#1 RxJava - Introduction

More videos:

  • Review - Christina Lee: Intro to RxJava

vert.x videos

From Zero to Back End in 45 Minutes with Eclipse Vert.x

Category Popularity

0-100% (relative to RxJava and vert.x)
Application And Data
100 100%
0% 0
Web Frameworks
18 18%
82% 82
Languages & Frameworks
100 100%
0% 0
Developer Tools
0 0%
100% 100

User comments

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Reviews

These are some of the external sources and on-site user reviews we've used to compare RxJava and vert.x

RxJava Reviews

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vert.x Reviews

17 Popular Java Frameworks for 2023: Pros, cons, and more
As Vert.x is an event-driven and non-blocking framework, it can handle a lot of concurrencies using only a minimal number of threads. Vert.x is also quite lightweight, with the core framework weighing only about 650 KB. It has a modular architecture that allows you to use only the modules you need so that your app can stay as slick as possible. Vert.x is an ideal choice if...
Source: raygun.com

Social recommendations and mentions

Based on our record, vert.x seems to be more popular. It has been mentiond 29 times since March 2021. We are tracking product recommendations and mentions on various public social media platforms and blogs. They can help you identify which product is more popular and what people think of it.

RxJava mentions (0)

We have not tracked any mentions of RxJava yet. Tracking of RxJava recommendations started around Mar 2021.

vert.x mentions (29)

  • Java News: WildFly 36, Spring Milestones, and Open Liberty Updates
    The sixth release candidate of Eclipse Vert.x 5.0.0 provides support for the Java Platform Module System and a new VerticleBase class. Further details are available in the release notes. - Source: dev.to / 20 days ago
  • Rust, C++, and Python trends in jobs on Hacker News (February 2025)
    I see your point, but I still don't think you can just say "If you want to get get a job as a Go developer, you must know gRPC." Even more so for Kafka, I've only heard about it being popular in the Java world. You can't even say "If you want to get a job as a Java developer, you must know Spring." Nowadays, sane Java projects use https://vertx.io, it's just too good. I would argue that Spring is for legacy... - Source: Hacker News / 2 months ago
  • Error handlers and failure handlers in Vert.x
    Vert.x is a toolkit for developing reactive applications on the JVM. I wrote a short introductory post about it earlier, when I used it for a commercial project. I had to revisit a Vert.x-based hobby project a few weeks ago, and I learned that there were some gaps in my knowledge about how Vert.x handles failures and errors. To fill those gaps, I did some experiments, wrote a few tests, and then wrote this blog post. - Source: dev.to / 5 months ago
  • Spark – A web micro framework for Java and Kotlin
    Https://vertx.io/ It's actively maintained with full time developers, performant, supports Kotlin out of the box, and has more features? - Source: Hacker News / about 1 year ago
  • Reactive database access on the JVM
    Hibernate Reactive integrates with Vert.x, but an extension allows to bridge to Project Reactor if wanted. - Source: dev.to / almost 2 years ago
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What are some alternatives?

When comparing RxJava and vert.x, you can also consider the following products

Guava - Google core libraries for Java 6+.

Javalin - Simple REST APIs for Java and Kotlin

Java - A concurrent, class-based, object-oriented, language specifically designed to have as few implementation dependencies as possible

Micronaut Framework - Build modular easily testable microservice & serverless apps

Quarkus - Quarkus: Supersonic Subatomic Java. . Contribute to quarkusio/quarkus development by creating an account on GitHub.

helidon - Helidon Project, Java libraries crafted for Microservices