Database Connector (Mongo)
Overview
A database connector is the bridge between Prisma and the underlying database. The MongoDB connector is used to connect a Prisma server to a MonogDB database.
The core responsibilities of a database connector are:
- Translate requests from the Prisma client into MongoDB API calls
- Execute the generated API call against the database
- Return the result from the database back to the Prisma client
When configuring your Prisma server with Docker, you need to specify which connector you'd like to use in order to connect to a certain database. You provide this info via the connector
property:
PRISMA_CONFIG: | managementApiSecret: __YOUR_MANAGEMENT_API_SECRET__ port: 4466 databases: default: connector: mongo uri: __YOUR_MONGO_DB_CONNECTION_STRING__
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Managing database connections
The connectionLimit
property in PRISMA_CONFIG
determines the number of database connections a Prisma service is going to use.
The connectionLimit
needs to be set to at least 2. One connection is always reserved for the Management API, all other connections are used for the Prisma service.
Database schema
Prisma currently maintains a collection called _RelayId
. This collection is there for historic reasons and will be removed soon.