# Netflix/fast_jsonapi

No Longer Maintained - A lightning fast JSON:API serializer for Ruby Objects.

Repository: https://github.com/Netflix/fast_jsonapi
Canonical: https://ross.abutalabs.com/products/fast_jsonapi
Language: Ruby
License: Apache-2.0
License Family: permissive
Topics: not-maintained
Last push: 2023-03-06T16:52:00+00:00

## Health v2 (maintenance only)
Score: 23/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 0, release rhythm 8, longevity 100
- inputs: {"age_days": 3136, "days_push": 1276, "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 5032, forks 422 (observed 2026-08-28T04:09:08.672900+00:00)

## What it is
A fast JSON:API serializer for Ruby objects, originally developed by Netflix, supporting attributes, relationships, compound documents, and caching. The project is no longer maintained; users are directed to the fork api-serializer.

## Use cases
- serialize ruby objects to :api format
- fast api response serialization in rails
- serialize records 25x faster than active model serializers
- generate compound documents with included relationships
- add caching to  serialization

## When to choose
- you maintain a legacy ruby app already using fast_api
- you need a battle-tested :api serializer and accept no updates

## When to avoid
- starting a new ruby project - use the api-serializer fork instead
- you need ongoing maintenance, security fixes, or modern ruby compatibility

## Facets
- artifact type: library
- maturity: abandoned
- function: serialization
- domain: backend, web-development, apis
- platform: ruby
- tags: -api, serializer, ruby, unmaintained, rails

## Member repositories
- Netflix/fast_jsonapi (main) score 23

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:09:08.672900+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 2026-08-29T18:17:26.981616+00:00, confidence not recorded.
  - readme: https://github.com/Netflix/fast_jsonapi (fetched 2026-08-28T04:09:08.672900+00:00, sha 0d0b86eb8242)
- Data as of 2026-08-30T08:39:29.467469+00:00.