Java8m
Features of Java 21 You Should Know
Explore virtual threads, pattern matching for switch, sealed classes, record patterns, and sequenced collections in Java 21.
March 20, 2026
5 articles found
Explore virtual threads, pattern matching for switch, sealed classes, record patterns, and sequenced collections in Java 21.
Set up Kafka producers and consumers in Spring Boot with dead-letter topics and idempotent publishing.
Build a Java Lambda handler and enable SnapStart to cut cold-start latency for Spring and Corretto runtimes.
Define a GraphQL schema, wire query and mutation controllers, and handle errors cleanly in Spring Boot.
Run OpenSearch locally with Docker, map documents from Spring Data, and run native queries for advanced search.