Bootiful Edge Services
summary
Builds a small demo: a customers service (H2 + R2DBC) and an orders service over RSocket for orders, then a single edge service using Spring Cloud Gateway and reactive clients to merge views. Produces an 8-customer dataset, composes customer+orders with reactive zip to avoid blocking, and shows GraphQL schema + batch mapping to fix the n+1 problem. Also generates a GraalVM native image: 83 MB footprint and a gateway on port 9999 proxying to 8080; demos run end-to-end.
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chapters (12)
- 0:00Introduction and setup
- 3:54Why edge services matter
- 10:14Building the customer service
- 14:34Spring Native and GraalVM
- 17:19Creating the orders service
- 21:12Introducing the edge service
- 24:00Spring Cloud Gateway basics
- 31:21Orchestrating services reactively
- 37:43Aggregating customer and order data
- 43:25Introducing GraphQL for edge services
- 48:34Implementing GraphQL schema
- 56:17Summary and closing
