google/rejoiner
Generates a unified GraphQL schema from gRPC microservices and other Protobuf sources observed · 2026-08-28
Health v2 · maintenance only
10/100
- Activity 0
- Release rhythm 8
- Longevity 100
Flags: archived
How is this computed?
round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10) — computed 2026-09-03. Adoption (stars, forks) is never an input.
- gap_med: n/a
- age_days: 3192
- days_rel: n/a
- days_push: 1177
- n_releases_24m: 0
Adoption not part of the score
3658 stars · 135 forks observed · 2026-08-28
What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-29, confidence not recorded
A Java library from Google that generates a unified GraphQL schema from gRPC microservices and other Protobuf sources. It maps GraphQL queries to Proto-based requests, joins data sources via annotated methods, and provides a DSL for schema composition.
Use cases
- expose gRPC microservices through a single GraphQL API
- generate GraphQL types from protobuf definitions
- stitch multiple backend services into one GraphQL schema
- map GraphQL selectors to protobuf field masks
- build a GraphQL gateway over existing proto-based backends
- join data from multiple microservices in one GraphQL query
When to choose
- your backend is built on gRPC and protobuf services
- you want a unified GraphQL API layer over multiple microservices
- you're on the JVM and want schema generation from proto definitions
- you need field-mask-based partial responses driven by GraphQL queries
When to avoid
- your services don't use protobuf or gRPC
- you need a actively developed project with recent commits
- you want a non-JVM GraphQL gateway
- you need a full GraphQL server runtime rather than schema generation
Facets
library · maturity maintenance
graphql rpc api-framework middleware apis backend microservices web-development developer-tools jvm cross-platform grpc protobuf schema-generation schema-stitching guice field-mask api-gateway
2 sources
- readme: https://github.com/google/rejoiner · fetched 2026-08-28 · e568787943bd
- homepage: https://google.github.io/rejoiner/ · fetched 2026-08-29 · c86c402f5e9c
Member repositories
| Repository | Role | Health v2 |
|---|---|---|
| google/rejoiner | main | 10 |
For agents
Data as of 2026-08-30T08:39:29.467469+00:00 · Report a problem