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Spring Boot vs Quarkus: Turbocharge Your Java Applications Unlocking Maximum Performance

By November 30, 2023March 4th, 2024No Comments7 min read
Spring Boot vs Quarkus

In the ever-evolving landscape of Java development, the popularity and vitality of the language persist. Developers always discuss Spring Boot vs Quarkus for Java Application development. Despite speculation about the retirement of Java, it remains a formidable choice for developers, continually evolving with the advent of third-party frameworks.

The contemporary shift towards microservices architecture has fueled the prominence of microservices frameworks, with Spring Boot vs Quarkus emerging as prominent choices for building cloud-native Java applications.  

In this discussion, we delve into a detailed comparison of Spring Boot and Quarkus, examining their feature sets, performance metrics, development costs, market popularity, and other critical aspects. 

Spring Boot Overview 

When we discuss Spring Boot vs Quarkus, Spring Boot has become a cornerstone in the development of web applications, offering a streamlined approach to building stand-alone, production-grade Spring-based applications.

With minimal Spring configuration requirements, developers can produce maintainable code efficiently. Spring Boot’s ease of use and compatibility with popular frameworks and libraries make it a preferred choice for many developers. 

Quarkus Introduction 

When we discuss Spring Boot vs Quarkus, Quarkus stands out as a Kubernetes-native Java framework designed to develop and deliver small artifacts. With a focus on faster boot times and lower request times, Quarkus is optimized for serverless, cloud-native environments.

Quarkus integrates seamlessly with Java frameworks, libraries, and environments such as Eclipse Micro profile, Spring, Kafka, and Hibernate, offering a unified reactive and imperative programming model. 

Noteworthy Quarkus Features 

Quarkus presents several compelling features for developers. Its compact framework, live reload capabilities, and support for the repository pattern with Panache are particularly noteworthy. Version 2.0 introduces live reload for unit tests, enhancing the test-driven development (TDD) experience.

When we compare Spring Boot vs Quarkus features and functionalities, all of them are great and beneficial for developers to create something new and really essential while developing a Java app. 

What do I like about Quarkus when Comparing Spring Boot vs. Quarkus? 

As a developer, it has a few remarkably interesting things. Besides the unified configuration, Quarkus is a very compact framework, and it comes with many integrations (via extensions) to many frameworks and libraries.  

As we compare Spring Boot vs Quarkus, I like that I do not need to depend on a particular IDE to write code and have this nice live reload for the application.

But from version 2.0, the live reload also applies to the unit tests by automatically running the tests that are associated with the code under modification, making TDD an amazingly easy integrated experience.  

Secondly, while comparing Spring Boot vs Quarkus, what I like about Quarkus is that it offers the same patterns I am used to with Spring.

For instance, when working with persistence and using JPA with Hibernate, I like to use the repository pattern, which helps abstract the code with Spring Data. Quarkus also implements the repository pattern with Panache, but, in addition, it adds the Active Record pattern.  

Spring Boot vs Quarkus 

Feature  Quarkus  Spring Boot 
Dependency  Uses CDI. Implemented with only a subset of CDI features currently.  Uses robust Dependency Injection Container 
Data Persistence  Uses familiar frameworks such as Hibernate – more innovative  Based on Spring Data abstraction, it is more mature. 
Application Boot-Time  Fast boot times  Slower boot times than Quarkus – generally slower than projects derived from Java Enterprise due to abstraction from the top of the Spring framework 
Memory Consumption  Lower memory consumption on boot and under heavy load   Higher memory consumption compared to Quarkus 
Maturity  New framework – documentation, and community less active than Spring Boot  It is much more mature, open-source, and feature-rich. Excellent documentation and community support 

 Spring Boot vs Quarkus – Performance Analysis 

In the dynamic landscape of Java development, the performance of frameworks plays a pivotal role in determining their suitability for various applications. Below is a detailed performance analysis comparing Spring Boot and Quarkus across multiple metrics: 

Performance Metrics 

Metric  Spring Boot JVM  Quarkus JVM  Spring Boot Native  Quarkus Native 
Startup Time (sec)  1.865  1.274  0.129  0.110 
Build Artifact Time (sec)  1.759  5.243  113  91 
Artifact Size (MB)  30.0  31.8  94.7  80.5 
Loaded Classes  8861  8496  21615  16040 
CPU Usage Max (%)  100  100  100  100 
CPU Usage Average (%)  82  73  94  92 
Heap Size Startup (MB)  1048.57  1056.96     
Used Heap Startup (MB)  83  62  12  58 
Used Heap Max (MB)  780  782  217  529 
Used Heap Average (MB)  675  534  115  379 
RSS Memory Startup (MB)  494.04  216.1  90.91  71.92 
Max Threads  77  47  73  42 
Requests per Second  7887.29  9373.38  5865.02  4932.04 


  1. Startup Time: Quarkus demonstrates faster startup times in both JVM and native modes, making it advantageous for applications requiring rapid deployment and scalability. 
  2. Build Artifact Time: Spring Boot excels in build artifact time for both JVM and native modes, showcasing its efficiency in generating deployable artifacts. 
  3. Artifact Size: Quarkus native exhibits a smaller artifact size compared to Spring Boot native, contributing to more efficient resource utilization. 
  4. Memory Consumption: Quarkus consistently shows lower memory consumption during startup and under heavy load, making it a compelling choice for resource-efficient applications. 
  5. CPU Usage: Quarkus demonstrates comparable or lower CPU usage, indicating efficient utilization of computational resources. 

Pros and Cons of Spring Boot 


  1. Extensive Automation Solutions: Spring Boot offers many tools for automating dependency configuration, objects, and containers. It leads to faster development cycles and less manual intervention. 
  2. Proven Stability and Maturity: Spring Boot is a well-established, mature framework with a proven track record in enterprise environments. Its stability is a significant advantage for mission-critical applications. 
  3. Aspect-Oriented Programming Capability: Developers can leverage aspect-oriented programming with Spring Boot, facilitating better modularization and separation of concerns. 
  4. Large and Active Community: Spring Boot boasts a massive community, providing a wealth of knowledge and support. Developers can find solutions to common problems and benefit from community-driven enhancements. 
  5. Faster and Cheaper Development: Due to its comprehensive features and ease of use, Spring Boot enables faster and more cost-effective development in many scenarios. 


  1. Resource Intensiveness: Spring Boot tends to be more resource-intensive regarding memory consumption and startup times than lightweight frameworks. 
  2. Internal Dependencies Complexity: The framework’s abundance of internal solutions can lead to less control and fewer options for integrations, potentially complicating certain development scenarios. 

Pros and Cons of Quarkus 


  1. Container-Centric Development: Quarkus simplifies and promotes container-centric development, particularly in Kubernetes environments. It helps developers avoid redundant processes in configuration and deployment. 
  2. Resource Efficiency: Quarkus is known for its lower memory consumption during startup and under heavy load, making it an attractive choice for resource-conscious applications. 
  3. Dual Programming Models: Quarkus supports both imperative and reactive programming models, providing flexibility for developers based on their application’s requirements. 
  4. Actively Growing Community Support: While newer, Quarkus is gaining popularity rapidly, supported by an actively growing community and contributions from leading tech companies. 
  5. Quality Third-Party Integrations: Quarkus focuses on quality support for third-party integrations, ensuring a seamless experience when working with popular libraries and frameworks. 


  1. Graal VM Installation Complexity: The initial installation of Graal VM, a key component for Quarkus native builds, can be complex for some developers, potentially posing a barrier to entry. 
  2. Less Specialized Developer Base: Quarkus, being relatively newer, may have a smaller base of specialized developers compared to more established frameworks, potentially leading to longer searches for suitable candidates. 
  3. Development Cost: In certain scenarios, development with Quarkus may be perceived as more expensive and slower than Spring Boot, especially considering the learning curve for new adopters. 

Spring Boot vs Quarkus: Popularity 

While Spring Boot enjoys widespread popularity and adoption in the enterprise environment, Quarkus is rapidly gaining traction, particularly in cases involving Kubernetes. Quarkus’s appeal lies in its resource efficiency, making it a compelling option for businesses aiming to reduce resource consumption.

So, it can be difficult to decide when comparing Spring Boot vs Quarkus. I hope this guide can help you select the most suitable and reliable framework for your Java application. 


When comparing Spring Boot vs Quarkus, choosing between them depends on project requirements, technological preferences, and developer skill levels.

Spring Boot remains a reliable choice with its maturity and stability, while Quarkus brings innovation and resource efficiency to the table.  

With this Spring Boot vs Quarkus guide, careful consideration of each framework’s strengths and weaknesses will guide developers in selecting the most suitable solution for their Java-based enterprise applications.

Spring Boot vs Quarkus

Shashi Bala, Sr Software Engineer, at IoT83

Shashi Bala is a professional software engineer proficient in Java and Spring Boot, Microservices, Docker, and Databases. With a fiery passion for coding and a commitment to delivering top-notch solutions, Shashi is dedicated to continuous learning and providing assistance to others in the ever-evolving landscape of technology. Beyond the world of programming, she finds joy in dancing, sketching, and indulging in various sports. Shashi combines technical expertise with a creative spirit, making her a versatile professional in both the digital and real-world domains.

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