Microservice
What is microservice?
An application decomposed into collection of loosely coupled services.
Microservice is a architectural style - It’s a variant of the service-oriented architecture (SOA) structural style.
Advantages of microservice over monolithic.
Services are fine-grained.
The protocols are lightweight.
Highly maintainable and testable.
Independently deployable.
Organized around business capabilities.
Who are all supported microservice implementation?
Spring Software Platform supports Microservice by using Spring Boot framework.(https://spring.io/)
Spark (http://sparkjava.com/)
JAX-RS (https://docs.oracle.com/javaee/6/tutorial/doc/giepu.html)
etc.
Spring or Spark, etc. supports REST API services over HTTP transport.
HTTP operations like GET, POST, PUT, DELETE, etc.
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Swagger is a OpenAPI standards product supports all authentication and authorization for an API.
Swagger provides beautiful UI to see REST API, method allowed, parameter details etc.
Microservice is not providing great security.
Enhance Transport Layer Security(HTTPS rather HTTP).
To have better security over microservice go with different licensed and free products.
Authentication: Cyber ark Vault, AWS Secrets manager, Azure Vault , LDAP, Active Directory (AD) manages and maintains user credentials.
Authorization: OAUTH 1.0/2.0
Sample Microservice Architecture: Taxi Hailing application
Authentication and Authorization
https://swagger.io/docs/specification/authentication/
https://oauth.net/2/grant-types/
Note: grant_type either it could be password or certificate or etc.
Swagger UI
Authorize: Basic/Bearer/OAUTH etc
REST API and supported methods etc
