index.md

section	status
Node.js	released

CAP Service SDK for Node.js

Reference Documentation { .subtitle}

As an application developer you'd primarily use the Node.js APIs documented herein to implement domain-specific custom logic along these lines:

1. Define services in CDS → see Cookbook > Providing & Consuming Services
2. Add service implementations → cds.Service > Implementations
3. Register custom event handlers in which → srv.on/before/after
4. Read/write data from other services in which → srv.run + cds.ql
5. ..., i.e. from your primary database → cds.DatabaseService
6. ..., i.e. from other connected services → cds.RemoteService
7. Emit and handle asynchronous events → cds.MessagingService

All the rest is largely handled by the CAP runtime framework behind the scenes. This especially applies to bootstrapping the cds.server and the generic features provided through cds.ApplicationService.