EventCatalog | Services

Overview

The Customer API is the front door to the Customer Management System. It validates incoming commands, persists customer data to the Customer DatabaseCustomer DatabaseContainerv1.0.0PostgreSQL database that is the system of record for all customer profile data.MapView docs, and publishes domain events (CustomerRegistered, CustomerUpdated) so the rest of the business can react to changes.

Sends 2 messages

Domain events published when customer data changes

Receives 3 messages

Commands and queries handled by this service

Responsibilities

Area	Description
Command handling	Validates and applies Register CustomerRegister CustomerCommandv1.0.0Command to register a new customer. Ownercustomer-platformSchema MapView docs and Update CustomerUpdate CustomerCommandv1.0.0Command to update an existing customer's profile. Ownercustomer-platformSchema MapView docs.
Reads	Serves Get CustomerGet CustomerQueryv1.0.0Query to fetch a single customer by their identifier. Ownercustomer-platformSchema MapView docs directly from the customer database.
Event publishing	Emits Customer RegisteredCustomer RegisteredEventv1.0.0Published when a new customer has registered. Ownercustomer-platformSchema MapView docs and Customer UpdatedCustomer UpdatedEventv1.0.0Published when an existing customer's profile has changed. Ownercustomer-platformSchema MapView docs on every change.
Persistence	Reads from and writes to the Customer DatabaseCustomer DatabaseContainerv1.0.0PostgreSQL database that is the system of record for all customer profile data.MapView docs (system of record).

Architecture diagram

Messages for this service

Sends messages (2)

Quickly find the message you need by searching for the name, type, or summary.

Name	Version	Type	Summary
Customer Registered	v1.0.0	event	Published when a new customer has registered.
Customer Updated	v1.0.0	event	Published when an existing customer's profile has changed.

Receives messages (3)

Quickly find the message you need by searching for the name, type, or summary.

Name	Version	Type	Summary
Register Customer	v1.0.0	command	Command to register a new customer.
Update Customer	v1.0.0	command	Command to update an existing customer's profile.
Get Customer	v1.0.0	query	Query to fetch a single customer by their identifier.

Event-driven architecture documentation: Acme Inc

Customer API

The public-facing API for customer profiles. Handles commands to register and update customers, serves customer reads, and publishes customer change events.