yzhao244 edited a comment on issue #339:
URL:
https://github.com/apache/incubator-eventmesh/issues/339#issuecomment-874276751
> @yzhao244 Would you like to share some new designs for us? thanks.
What is the purpose of the design:
The purpose of the design is for introducing Schema Registry as part of the
EventMesh.
The Schema Registry is a central repository with RESTful interfaces for
developers to define and register standard schemas. Addresses the problem of
different data(event) format of producer and consumer.
What are the features to provide from Schema Registry:
1. Persist and share version history of all schemas(schemas lifecycle
management) and verify schema compatibility.
2. Supports Avro, JSON, and Protobuf formats serialization/deserialization
What are the high level design to achieve the features
1. Defines schema registry data models(subject, schema, version,
compatibility) and schema REST API standards based on the open-source
OpenSchema specifications.
2. The eventmesh-database-api abstract module abstracts the CRUD capability
of the schema registry into this module.
3. Eventmesh-database-h2 contains the actual implementation. I proposed to
leverage using h2 database and use JDBC API for querying with h2 database in
eventmesh.
The followings are high-level design diagram:
An example of Backward Compatibility from OpenSchema Specification
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