Design doc

Design goal and decision

1. Seamless Spring Cloud integration with Azure. User can easily change into Azure backed service without changing any code. Only dependency and few configuration needed.
2. Least configuration. By taking advantage of Spring boot auto config, choosing appropriate default properties based on Azure Resource Management API. Besides that, users could override these properties by providing their own.
3. Provision resource automatically. If resource is non existed, it will created under user-provided subscription and resource group. This will save efforts of manually creating such resources.
4. Complete ecosystem for micro-service architecture. By supporting as many Azure service as possible, users could enjoy full benefits provided by Spring Cloud without tightly coupling with one specific cloud provider.

Planned feature

Feature	Azure Service	Description	Status
Spring cloud Cache Starter	Redis	Auto config of redis properties
Spring cloud Resource	Storage account	Mapping storage as Spring resource
Spring cloud JDBC starter	Sql Database Mysql PostgreSql	Auto config of sql database
Spring cloud messaging	Event Hub Service Bus Queue Storage Notification Hub	Inbound and outbound adapter for consuming and producing message
Spring cloud stream binder	Event Hub	Event hub binder to provide as many function as Kafka
Spring cloud stream starter	Kafka-HDInsight Event Hub with Kafka API	Auto config of Kafka properties
Spring cloud CosmosDB starter	Cosmos DB	Auto config of connection properties and Spring Data CosmosDB
Spring cloud logging starter	Application Insight	Auto config of logger
Spring cloud trace	Applcation Insight	Auto config of sending trace
Spring Hadoop starter	Hadoop(HDInisght)	Auto config of hadoop
Spring mail	SendGrid	Auto config of mail service	Blocked on no Azure management API
Spring cloud Function	Azure Function	Auto config of Azure Function