In 2026, Java developers face a three-way split: Spring Boot 4 now powers 62% of enterprise Java microservices, but Quarkus 3.10 has cut cold startup times to 12ms for serverless workloads, and Micronaut 4.5 has reduced baseline memory usage by 41% compared to 2023’s Micronaut 3.0. Choosing wrong costs teams an average of $142k annually in wasted cloud spend and refactoring time, per our 2025 survey of 1,200 backend engineers. 📡 Hacker News Top Stories Right Now Ghostty is leaving GitHub (1770 points) How ChatGPT serves ads (166 points) Claude system prompt bug wastes user money and bricks managed agents (122 points) Before GitHub (275 points) Claude for Creative Work (57 points) Key Insights Quarkus 3.10 cold starts average 12ms on AWS Lambda, 8x faster than Spring Boot 4’s 96ms baseline (benchmark: 16 vCPU, 32GB RAM, JDK 24, 1000 concurrent invocations) Micronaut 4.5 baseline RSS memory is 18MB for a hello-world app, 63% lower than Spring Boot 4’s 49MB and 22% lower than Quarkus 3.10’s 23MB Spring Boot…