# ngs-doo/dsl-json

High performance JVM JSON library

Repository: https://github.com/ngs-doo/dsl-json
Canonical: https://ross.abutalabs.com/products/dsl-json
Homepage: https://dsl-platform.com
Language: Java
License: BSD-3-Clause
License Family: permissive
Topics: json, java, high-performance, android, kotlin, scala
Last push: 2026-06-29T12:28:41+00:00

## Health v2 (maintenance only)
Score: 63/100 (v2, computed 2026-09-02T17:46:02.011165+00:00)
- activity 90, release rhythm 8, longevity 100
- inputs: {"age_days": 3957, "days_push": 65, "days_rel": null, "gap_med": null, "n_releases_24m": 0}
- flags: none
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 1071, forks 110 (observed 2026-08-28T04:03:28.264379+00:00)

## What it is
DSL-JSON is a high-performance JSON serialization library for the JVM (Java, Kotlin, Scala, Android) with compile-time databinding via annotation processors. It works directly on bytes for fast, allocation-friendly serialization and deserialization of POJOs.

## Use cases
- serialize and deserialize POJOs to JSON on the JVM
- parse JSON on Android with minimal footprint
- stream large JSON lists with low memory usage
- replace Jackson with a faster JSON codec
- bind JSON to existing object instances to reduce GC pressure
- support Scala collections and Kotlin classes in JSON serialization

## When to choose
- JSON throughput and low allocation are critical
- you want compile-time code generation instead of reflection
- targeting Android or other size-constrained environments
- you need streaming deserialization of large JSON arrays

## When to avoid
- you need extensive ecosystem integrations and third-party module support like Jackson offers
- you prefer runtime reflection with zero annotation processing
- you need converters for legacy types like Joda out of the box

## Facets
- artifact type: library
- maturity: active
- function: serialization
- domain: developer-tools, backend, apis, performance
- platform: jvm
- tags: annotation-processor, byte-level, streaming, high-performance, pojo-databinding, android

## Member repositories
- ngs-doo/dsl-json (main) score 63

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:03:28.264379+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-30T06:53:51.718170+00:00, confidence not recorded.
  - readme: https://github.com/ngs-doo/dsl-json (fetched 2026-08-28T04:03:28.264379+00:00, sha 951529c8aa18)
  - homepage: https://dsl-platform.com (fetched 2026-08-29T12:56:02.362448+00:00, sha 69b8c2cb5d3e)
  - site_page: https://docs.dsl-platform.com/ (fetched 2026-08-29T12:56:02.371599+00:00, sha b2565b32740c)
- Data as of 2026-08-30T08:39:29.467469+00:00.