Virtual threads / Project Loom and Spring Boot 4 migration
Key Questions
What are the key milestones in Spring Boot 4.1-M4?
Spring Boot 4.1-M4 includes gRPC Micrometer integration, RabbitMQ revert, Modulith with JobRunr support, and maturation of Spring AI 2.0 for AI-Native applications. These updates enhance observability, messaging, modularization, and AI capabilities.
What does the Spring Boot 4 migration guide cover?
The migration guide addresses Jackson 3 upgrades, renames of starters, a properties migrator tool, and Spring Data support for JSONB in PostgreSQL. It helps smoothly transition applications to the new version while handling schema flexibility.
What limits performance in 1M RPS Spring Boot systems?
Common bottlenecks include thread exhaustion from blocking requests, GC pressure from excessive object allocation, and issues with JSON serialization and database interactions. Production upgrades like virtual threads via Project Loom and Java 26 improvements mitigate these.
What are the notable changes in Spring Cloud 2025.0.2?
Spring Cloud 2025.0.2 (Northfields) is based on Spring Boot 3.5.13 and includes patches for various components. It provides stability updates for cloud-native applications.
What enterprise anti-patterns should be avoided in Spring Boot?
Many Spring Boot projects fail due to bad design decisions over months, such as those leading to enterprise garbage code. Articles highlight avoiding patterns that cause thread exhaustion, poor scalability, and maintenance issues in microservices.
Boot 4.1-M4 milestones (gRPC Micrometer, RabbitMQ revert, Modulith JobRunr, Spring AI 2.0 AI-Native); Trivago GraalVM scaling; migration guide (Jackson3, starters renames, properties-migrator, Spring Data JSONB); Spring Cloud 2025.0.2 patches; prod upgrades (1M RPS: thread exhaustion/GC/JSON/DB, Java26 gains, records/Loom); airline/insurance microservices w/ Kafka/Resilience4j; enterprise anti-patterns; OTel instr/SigNoz; module compat/benchmarks vs reactive/hybrid/monolith scaling ongoing.