The article explains why Spring Boot continues to use Jackson as its default JSON serializer, detailing the automatic ObjectMapper/JsonMapper creation, the HTTP message conversion process, Jackson’s balanced strengths, practical code samples, and how to switch to alternatives like Gson, JSON‑B, or Fastjson2.
A newly disclosed CVE-2026-16723 shows that fastjson2’s AutoType parsing can be exploited for remote code execution, affecting all released versions, with a fix only expected on August 2, and the article explains how to mitigate the risk by enabling SafeMode before upgrading.
This article explains how fastjson2 achieves significant performance gains by replacing reflection with Java 8 Lambda‑generated function mappings, applying zero‑copy String construction, and implementing hand‑crafted parsers for common types such as dates, backed by benchmark data.
Apache Dubbo 3.1.0 introduces native Service Mesh support, an error‑code troubleshooting guide, Fastjson2 serialization, single‑port multi‑protocol handling, and full compatibility with Dubbo 3.0, providing a lighter data‑plane and a more cohesive control‑plane for cloud‑native applications.
This article examines Fastjson2's performance compared to Fastjson, detailing environment setup, benchmark results, GC analysis, and a deep dive into the library's serialization and deserialization source code to explain why memory settings dramatically affect speed.
This article examines fastjson2’s design improvements over fastjson1, highlighting its safer AutoType mechanism, performance enhancements, migration strategies—including compatibility mode and new APIs—and provides practical code examples for configuring serializers, updating Maven dependencies, and adapting Spring converters.
