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Programmer DD
Programmer DD
Oct 23, 2025 · Backend Development

Why Jackson Serialization Can Drain Your CPU and How to Fix It

The article reveals how default Jackson JSON serialization can become a hidden CPU bottleneck in high‑traffic Spring Boot services, explains why full entity objects inflate serialization time, and presents practical optimizations such as @JsonView, custom ObjectMapper settings, hand‑written serializers, and alternative data formats to dramatically cut latency and cloud costs.

JacksonJavaPerformance Optimization
0 likes · 13 min read
Why Jackson Serialization Can Drain Your CPU and How to Fix It
Code Mala Tang
Code Mala Tang
Aug 30, 2025 · Backend Development

Boost FastAPI Response Speed 5× with a One‑Line ORJSON Switch

Discover how replacing FastAPI’s default json module with the high‑performance ORJSON serializer can slash response latency, reduce CPU usage, and boost throughput up to five times—all with a single line of code and without altering existing endpoints.

FastAPIPerformance OptimizationPython
0 likes · 4 min read
Boost FastAPI Response Speed 5× with a One‑Line ORJSON Switch
Spring Full-Stack Practical Cases
Spring Full-Stack Practical Cases
Nov 5, 2024 · Backend Development

Solve Long Precision Loss in Spring Boot 3 with Jackson and Custom Annotations

This article demonstrates how to handle Java Long precision loss in Spring Boot 3 front‑end displays, configures Jackson to serialize Long as String, uses @JsonValue for single‑property serialization, and creates custom annotations with a SensitiveSerializer for data masking, complete with code examples and screenshots.

Custom AnnotationJacksonLong precision
0 likes · 9 min read
Solve Long Precision Loss in Spring Boot 3 with Jackson and Custom Annotations
Alibaba Cloud Developer
Alibaba Cloud Developer
Nov 4, 2024 · Backend Development

Unveiling FastJSON 2.0.31: A Deep Dive into Its Serialization Mechanics

This article provides a comprehensive walkthrough of FastJSON 2.0.31's serialization and deserialization process, covering its core architecture, step‑by‑step execution flow, common pitfalls such as getter misuse and circular references, and practical guidance on annotations and SerializerFeature options.

ASMJavaReflection
0 likes · 20 min read
Unveiling FastJSON 2.0.31: A Deep Dive into Its Serialization Mechanics
Java Architect Essentials
Java Architect Essentials
Aug 18, 2024 · Backend Development

Why Fastjson’s Date Formatting Breaks on Linux and How to Resolve It

The author recounts switching from Gson to Fastjson, encountering a date‑formatting bug that only appears on Linux due to an outdated Fastjson version, explores a circular‑reference $ref issue, and shares debugging steps, GitHub issue references, and practical fixes for reliable JSON serialization.

BackendDebuggingJava
0 likes · 12 min read
Why Fastjson’s Date Formatting Breaks on Linux and How to Resolve It
Java High-Performance Architecture
Java High-Performance Architecture
May 24, 2024 · Backend Development

Fastjson Pitfalls: Date Formatting Glitch and Circular Reference Chaos Explained

The author recounts a debugging saga with Alibaba's Fastjson library, detailing how a global date‑format setting failed on Linux, how an outdated Fastjson version caused the issue, and how circular‑reference detection with $ref can surprise developers, offering practical solutions and version recommendations.

Date FormattingJavaVersion Compatibility
0 likes · 11 min read
Fastjson Pitfalls: Date Formatting Glitch and Circular Reference Chaos Explained
macrozheng
macrozheng
Feb 22, 2024 · Backend Development

Why Using isSuccess Can Break JSON Serialization in Java

This article explains how different Java JSON libraries handle boolean getter naming, shows code examples of serialization results with fastjson, Gson, and Jackson, and recommends using a plain "success" field with an isSuccess() getter to avoid runtime bugs.

GsonJacksonJava
0 likes · 7 min read
Why Using isSuccess Can Break JSON Serialization in Java
Top Architect
Top Architect
Jul 18, 2023 · Backend Development

Fastjson Boolean Property Naming Issue and How to Resolve It

This article explains why Fastjson incorrectly renames boolean fields prefixed with "is" during serialization, demonstrates the problem with sample Java code, analyzes the underlying reflection logic, and provides two practical solutions: following Alibaba Java guidelines or using @JSONField annotations.

Javaboolean namingfastjson
0 likes · 9 min read
Fastjson Boolean Property Naming Issue and How to Resolve It
Top Architect
Top Architect
May 31, 2023 · Backend Development

FastJson Date Formatting and Circular Reference Issues: A Debugging Journey

The article recounts a senior architect's investigation into FastJson's date formatting bug and circular reference handling, detailing version mismatches, GitHub issue tracking, feature flag usage, and lessons for backend developers on avoiding hidden serialization pitfalls.

DebuggingJavadate_format
0 likes · 11 min read
FastJson Date Formatting and Circular Reference Issues: A Debugging Journey
Java Backend Technology
Java Backend Technology
May 25, 2023 · Backend Development

Why FastJson’s Date Formatting Fails on Linux and How to Fix It

This article recounts the author's real‑world debugging of FastJson, covering unexpected date‑format priority issues on Linux, version mismatches, circular‑reference detection quirks, and practical tips such as disabling specific SerializerFeatures, while also reflecting on the library’s maintenance and migration to FastJson2.

circular referencedateformatfastjson
0 likes · 11 min read
Why FastJson’s Date Formatting Fails on Linux and How to Fix It
Spring Full-Stack Practical Cases
Spring Full-Stack Practical Cases
Jul 25, 2022 · Backend Development

Mastering Spring MVC Auto-Configuration in Spring Boot 2.4.12

This guide explains how Spring Boot 2.4.12 automatically configures Spring MVC components such as view resolvers, converters, and message handlers, and shows how to customize them via WebMvcConfigurer, WebMvcRegistrations, HttpMessageConverters, and @JsonComponent, including code examples for full control over the Web MVC setup.

HttpMessageConvertersSpring BootSpring MVC
0 likes · 8 min read
Mastering Spring MVC Auto-Configuration in Spring Boot 2.4.12
Java Architecture Diary
Java Architecture Diary
May 27, 2022 · Backend Development

Why Upgrade to fastjson2? Performance Boosts and Safer AutoType Handling

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.

Fastjson2Javajson serialization
0 likes · 8 min read
Why Upgrade to fastjson2? Performance Boosts and Safer AutoType Handling