Javalin VS vert.x

vert.x

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2022-10-26

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2022-06-12

Javalin

Website: javalin.io
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vert.x

Website: vertx.io
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Javalin features and specs

Lightweight
Javalin is a lightweight framework with minimal dependencies, making it easy to integrate into existing projects and reducing overhead.
Simplicity
The framework is simple to use and has a straightforward API, which makes it easier for developers to understand and work with.
Kotlin & Java Support
Javalin natively supports both Kotlin and Java, making it flexible for projects written in either language.
WebSocket Support
It includes built-in support for WebSockets, enabling real-time communication between the client and server without additional dependencies.
Extensive Documentation
Javalin comes with comprehensive documentation and guides, which help developers get up to speed quickly.

Possible disadvantages of Javalin

Limited Features
As a minimalist framework, Javalin may lack some advanced features present in more comprehensive frameworks, requiring additional implementations from developers.
Community Support
While growing, the community around Javalin is not as large as other established frameworks, which may result in fewer resources or third-party libraries.
Performance Overhead
Though lightweight, Javalin may not offer the same level of performance optimization as frameworks specifically designed for high-performance use cases.
Limited Middleware
Compared to other frameworks, the middleware support in Javalin is more limited, potentially requiring additional code for customization.

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.

Javalin videos

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vert.x videos

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

Category Popularity

0-100% (relative to Javalin and vert.x)

vert.x

Web Frameworks

46 46%

Web Frameworks

54% 54

Developer Tools

54 54%

Developer Tools

46% 46

Runtime

54 54%

Runtime

46% 46

Python Web Framework

47 47%

Python Web Framework

53% 53

User comments

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Reviews

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

Javalin 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

Javalin might be a bit more popular than vert.x. We know about 36 links to it since March 2021 and only 29 links to vert.x. 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.

Javalin mentions (36)

Year After Switching from Java to Go: Our Experiences
But Javas has so many of these web frameworks?! * Spring (https://spring.io/) * Spring Boot (https://spring.io/projects/spring-boot) * Helidon (https://helidon.io/) * Micronaut (https://micronaut.io/) * Quarkus (https://quarkus.io/) * JHipster (https://www.jhipster.tech/) * Vaadin (https://vaadin.com/) That's just to mention the bigger ones, there's lots of mini frameworks like Javalin (https://javalin.io/) and... - Source: Hacker News / 2 months ago
Latudio – a language acquisition app with a listening-oriented approach
- like Sentences exercise, but you can select your own set of sentences. You can also set goals and view statistics about your progress. None of this would be possible without the great help from hundreds of our contributors [3], who translated, mapped and recorded content. All the content you find in the app was reviewed multiple times by several people and recordings are made by native speakers. No story in the... - Source: Hacker News / 5 months ago
Show HN: Donobu – Mac App for Web Automation and Testing
- Javalin 6 for the web framework (https://javalin.io/). - Source: Hacker News / 7 months ago
Spark – A web micro framework for Java and Kotlin
I'd recommend Javalin (https://javalin.io/) instead. Same idea, only executed better and it is actively maintained. - Source: Hacker News / about 1 year ago
Spark – A web micro framework for Java and Kotlin
SparkJava has an actively developed fork/successor called Javalin[1]. It's straightforward to convert from SparkJava to Javalin. The latter is written in Kotlin, but works fine with ordinary Java. While the rest of the Java world was devolving into annotation hell, AOP and other nightmares, these Java microframeworks showcased what happens when you forego legacy Java and leverage modern Java language features... - Source: Hacker News / about 1 year ago

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 / 15 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