๐ FASTJSON2 is a Java JSON library with excellent performance.
Star History
Add Live Star History & Verified Badges to README.md
Keep your repository README looking professional and dynamic. As our continuous crawler records new stars, these official SVG badges update in real time with zero maintenance.
Renders your high-resolution star trajectory chart right inside your GitHub README or project docs.
[](https://githubrepo.cloud/repo/alibaba/fastjson2?utm_source=readme_chart)Compact Shields-style badges for your README header. Shows real-time stars and global ranking.
[](https://githubrepo.cloud/repo/alibaba/fastjson2?utm_source=readme_badge) [](https://githubrepo.cloud/repo/alibaba/fastjson2?utm_source=readme_badge) [](https://githubrepo.cloud/repo/alibaba/fastjson2?utm_source=readme_badge)Momentum
+111
STARS ยท LAST 30 DAYS
4
PER DAY
#170
MOST-STARRED Java
| Window | 7 days | 30 days | 90 days |
|---|---|---|---|
| Stars gained | +28 | +111 | +360 |
| Per day | 4 | 4 | 4 |
| Forks gained | +3 | +12 | +31 |
fastjson2 gained 111 stars in the last 30 days, about 4 a day, and now has 4.4K. It is about 5 years old and has averaged roughly 885 stars a year. It ranks #170 among Java repositories and #2,504 across all languages on GitHubRepo.
Trending Record
2
DAYS ON TRENDING
#5489
BEST RANK
Oct 17, 2026
FIRST APPEARANCE
Active
STATUS TODAY
fastjson2 has maintained a continuous presence across global trending indexes, peaking at #5489. Below is the 30-day activity profile:
๐ก Overview
fastjson2 is an open-source project written in Java: ๐ FASTJSON2 is a Java JSON library with excellent performance.
Engineered for speed, consistency, and developer ease, it solves common hurdles in android, big-data, deserialization. It provides clear interfaces, comprehensive configuration options, and seamless integration with existing tools across the modern development stack.
โก Key Features
Optimized execution pipeline written in Java for predictable speed.
Zero-friction configuration with comprehensive sensible defaults out of the box.
Cross-platform runtime support across Linux, macOS, and Windows environments.
Strong typing and modular architecture designed for easy extension and maintainability.
Standardized CLI and API interfaces for smooth integration into CI/CD workflows.
Active community maintenance with regular dependency updates and security patches.
๐ฅ Installation
$ git clone https://github.com/alibaba/fastjson2.git
cd fastjson2โ System Requirements
Platforms
- โข macOS
- โข Linux
- โข Windows
Runtime & Dependencies
JDK 17 or higher (OpenJDK / GraalVM)
Architecture
x86_64, ARM64 (Apple Silicon & Graviton)
๐ง How It Works
fastjson2 coordinates its core functionality through a modular Java pipeline. It parses configuration parameters, validates inputs, and resolves dependencies asynchronously. By minimizing runtime overhead and keeping allocations localized, it delivers predictable performance in both local development environments and automated production workloads.
๐ฏ Production Use Cases
Production System Integration
Embed fastjson2 into Java backend services to handle core application logic.
CI/CD Automated Pipelines
Run automated validation, builds, and integration suites during deployments.
Developer Tooling & Workflows
Accelerate developer onboarding with pre-configured project utilities.
Open Source Extension
Fork and customize internal modules under the repository's open Apache-2.0 license.
๐ Getting Started
Install fastjson2 using your package manager: `git clone https://github.com/alibaba/fastjson2.git`
Initialize your project workspace or configuration file for fastjson2.
Import fastjson2 into your codebase or invoke it directly from your terminal.
Execute your test suite or run `fastjson2 --help` to verify successful setup.
๐ Strengths
โ ๏ธ Considerations
โ Alternatives & Direct Competitors
๐ฅ Who Should Use This
Developers and engineering teams building with Java, seeking reliable, tested, and actively maintained tooling for production workloads.
๐ Nearby in the Rankings
alibaba/fastjson2 is currently ranked #2,504 by stars across every repository tracked on GitHubRepo. These are adjacent projects:
| Rank | Repository | Language | Stars | Action |
|---|---|---|---|---|
| #2,499 | square/wire | Kotlin | โ 4.4K | Compare โ |
| #2,499 | openvinotoolkit/open_model_zoo | Python | โ 4.4K | Compare โ |
| #2,501 | crmne/ruby_llm | Ruby | โ 4.4K | Compare โ |
| #2,502 | Observal/Observal | Python | โ 4.4K | Compare โ |
| #2,503 | openutau/OpenUtau | C# | โ 4.4K | Compare โ |
| #2,504 | alibaba/fastjson2 This Project | Java | โ 4.4K | |
| #2,505 | blackcandy-org/blackcandy | Ruby | โ 4.4K | Compare โ |
| #2,506 | jsbin/jsbin | JavaScript | โ 4.4K | Compare โ |
| #2,506 | ExcelDataReader/ExcelDataReader | C# | โ 4.4K | Compare โ |
| #2,506 | bjarneo/cliamp | Go | โ 4.4K | Compare โ |
| #2,509 | archtechx/tenancy | PHP | โ 4.4K | Compare โ |
Frequently Asked Questions
What does fastjson2 do? +
๐ FASTJSON2 is a Java JSON library with excellent performance.
What language is fastjson2 written in? +
The primary language is Java. Topics include: android, big-data, deserialization, fastjson, fastjson2.
Is fastjson2 actively maintained? +
Yes, the last recorded push was on Oct 17, 2026 with 782 open issues being tracked.
How many stars does fastjson2 have? +
fastjson2 has 4,423 stars and 619 forks on GitHub.
How does fastjson2 rank among GitHub repositories? +
With 4,423 stars, alibaba/fastjson2 is ranked #2,504 globally across all repositories tracked on GitHubRepo and #170 among Java projects.
What license is fastjson2 distributed under? +
The repository reports a Apache-2.0 license. Always verify the repository LICENSE file for legal terms.
