SpiceDB is an open source, Google Zanzibar-inspired, database system for creating and managing security-critical application permissions.

SpiceDB

```java
WriteRelationshipsRequest.newBuilder()
        .addUpdates(
            RelationshipUpdate.newBuilder()
                .setOperation(RelationshipUpdate.Operation.OPERATION_CREATE)
                .setRelationship(
                    Relationship.newBuilder()
                        .setResource(
                            ObjectReference.newBuilder()
                                .setObjectType("subteam")
                                .setObjectId("interns")
                                .build()
                        )
                        .setRelation("user")
                        .setSubject(
                            SubjectReference.newBuilder()
                                .setObject(
                                    ObjectReference.newBuilder()
                                        .setObjectType("user")
                                        .setObjectId("shoryu_sauce")
                                        .build()
                                )
                                .build()
                        )
                        .build()
                )
                .build()
        )
        .build()
```