☕✈️🍃✡️ HELIDON 27 vs SPRING BOOT vs QUARKUS: what REALLY changes?
☕✈️🍃✡️ HELIDON 27 vs SPRING BOOT vs QUARKUS: what REALLY changes?
Java has a third cloud-native framework worth watching. 👀
🔸 TLDR
Helidon 27 is not just another release.
It now follows the JDK itself: Helidon 27 requires JDK 27, while Helidon 4.5 remains the LTS “Tail”.
And architecturally, Helidon sits in an interesting place between Spring Boot and Quarkus: explicit Java, build-time generation and virtual threads by design.
🔸 WHAT HELIDON 27 BRINGS 🚀
▪️ JDK Tip & Tail model: Helidon feature releases now align with Java releases.
▪️ JDK 27 baseline, allowing Helidon itself to use newer Java features such as ScopedValue.
▪️ Complete Declarative API coverage: HTTP, gRPC, Messaging, GraphQL and OpenAPI.
▪️ New Helidon Messaging with Kafka, JMS and Pulsar connectors; using ordinary blocking Java instead of forcing reactive APIs.
▪️ New Helidon Data JDBC: you write the SQL + repository interface; Helidon generates the JDBC plumbing at build time.
▪️ TOML configuration, dynamic HTTP routing, SNI improvements and broader reflection-free Helidon JSON usage.
🔸 TOP 3️⃣: HELIDON vs SPRING BOOT 🍃
1️⃣ EXPLICIT JAVA vs AUTO-CONFIGURATION
Spring Boot is built around its ApplicationContext, beans, starters and auto-configuration.
Helidon Core can go much more explicit:
WebServer.builder()
.addRouting(r -> r.get("/hello",
(req, res) -> res.send("Hello")))
.build()
.start();Less framework magic, more visible wiring.
#Java #Helidon #SpringBoot
2️⃣ VIRTUAL THREADS AT THE CORE
Helidon WebServer was designed around Java virtual threads.
Spring Boot can absolutely use virtual threads, but its web model also spans traditional Servlet containers and reactive WebFlux.
#VirtualThreads #Concurrency
3️⃣ JAVA CADENCE vs SPRING CADENCE
Helidon 27 → JDK 27.
Future Helidon Core releases follow Java’s 6-month rhythm.
Spring Boot has its own release train and supports a broader range of JDK versions.
#JDK27 #Spring
🔸 TOP 3️⃣: HELIDON vs QUARKUS ⚡
1️⃣ PLAIN JAVA OPTION vs CDI-CENTRIC MODEL
Quarkus heavily leverages build-time CDI through ArC.
Helidon gives you two paths:
▪️ Imperative → plain Java, no DI required
▪️ Declarative → annotations + build-time generated wiring
#CDI #Java
2️⃣ VIRTUAL-THREAD-FIRST vs REACTIVE CORE
Quarkus REST sits on Vert.x and is reactive underneath, while also supporting blocking code and virtual threads.
Helidon starts from the opposite direction: ordinary imperative Java running naturally on virtual threads.
#Reactive #VirtualThreads
3️⃣ JVM-FIRST SIMPLICITY vs NATIVE-FIRST DNA
Quarkus has deep GraalVM/Mandrel native-image integration.
Helidon focuses heavily on lightweight, reflection-free JVM applications and build-time generated code without requiring Native Image.
Both optimize startup and footprint; but from different architectural starting points.
🔸 TAKEAWAYS
▪️ Spring Boot → huge ecosystem + auto-configuration 🍃
▪️ Quarkus → build-time optimization + reactive/native DNA ⚡
▪️ Helidon → explicit Java + virtual threads + JDK alignment ☕
And Helidon 27 makes that last proposition much stronger.
Which model would you choose for your next Java microservice? 👇
#Java #Java27 #JDK27 #Helidon #SpringBoot #Quarkus #Microservices #CloudNative #VirtualThreads #GraalVM #SoftwareArchitecture #JavaDeveloper
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