read.me

Services

Gateway
	[Authorize] Create/check token
	Retrieve User IP to get GeoLocation (map in Kibana)
	BFF aggregators (with gRPC)
	Cash requests (InMemory)
	Request limiting
	     
Auth
	AWS Cognito
	JWT/Refresh token
	Google/FB authentication
	Save User IP with GeoLocation (map in Kibana)
	User Logins/SignUps metrics to Prometheus/Grafana

Orders
	Saga coordinator
	PostgreSQL as DB (EF)
	MediatR
	CQRS pattern
	FluentValidator
	UnitOfWork for transactions

Basket
	Redis as DB
	gRPC for BFF aggregators?

Catalog
	Elastic as DB for Autocomplete, complex searches and FT search in all fields
	gRPC for BFF aggregators?
	OpenTelemetry(APM?) (API controllers, Core, Elastic)

Inventory
	Redis as DB


Payment
	Stripe sandbox

PriceCalculator
	Coupons
	Time limited discounts
	Calculates final price (have to store all current prices)
	Get special offers for specific product
	? as DB

Recommendations
	Stores ratings, buy facts, reviews
	Get ratings, "ALSO BOUGHT", Reviews
	Neo4j as graph DB


	
Logging
	seq
	APM (OpenTelemetry?)


Notification service
	Save UserDevices IDs
	Deduplicate messages
	Emulate sending by deleting old messages (TTL)
	Redis as DB

ServiceBus
	Kafka
	RabbitMQ

For all services
	Unit Testing
	Functional Testing
	HealthChecks for all services (https://medium.com/aspnetrun/microservices-monitoring-with-health-checks-using-watchdog-6b16fdae0349)
	Pagination
	Swagger in Dev

Good to have
	SDK libs for project
        User Secrets
	CI/CD
	K8s 
	Terraform
	LB ?
	Python scraping book store for realistic data