MapStruct vs Quarkus: What are the differences?
Developers describe MapStruct as "A Java code generator for creating fast and type-safe bean mappings at compile time". It is a code generator that greatly simplifies the implementation of mappings between Java bean types based on a convention over configuration approach. The generated mapping code uses plain method invocations and thus is fast, type-safe and easy to understand. On the other hand, Quarkus is detailed as "A Kubernetes Native Java stack tailored for OpenJDK HotSpot and GraalVM, crafted from the best of breed Java libraries and standards". It tailors your application for GraalVM and HotSpot. Amazingly fast boot time, incredibly low RSS memory (not just heap size!) offering near instant scale up and high density memory utilization in container orchestration platforms like Kubernetes. We use a technique we call compile time boot.
MapStruct and Quarkus can be primarily classified as "Java" tools.
Some of the features offered by MapStruct are:
- Mapping (immutable) objects using builders
- Enhanced and more flexible update method (@MappingTarget) handling
- Constructor injection for Annotation Based component models
On the other hand, Quarkus provides the following key features:
- CONTAINER FIRST
- UNIFIES IMPERATIVE AND REACTIVE
- BEST OF BREED LIBRARIES AND STANDARDS
MapStruct and Quarkus are both open source tools. It seems that Quarkus with 3.52K GitHub stars and 572 forks on GitHub has more adoption than MapStruct with 2.24K GitHub stars and 360 GitHub forks.