graphql-mongoose-subscriptions

Implements the PubSubEngine interface from graphql-subscriptions using mongoose as the underlying pub/sub mechanism. Version 1.0.18 is the latest stable release. Allows multiple subscription manager instances to communicate via a shared mongoose database by publishing and subscribing to topics through mongoose. Designed for Apollo GraphQL subscriptions in Node.js environments that already use mongoose as a database driver. Key differentiator: enables cross-instance subscription events without external message brokers or Redis, suitable for serverless or multi-process setups where all instances share a mongoose backend.