Feature matrix

Feature	Implementation	Details
Server	Grizzly	NIO Webserver
Dependency Injection	Spring 4.x	Everything (nearly) as Spring bean
Rest	Jersey 2.x	Jersey NIO Rest Client	Spring REST Template with Apache Async HTTP
JSON	Jackson	With Guava conversions	With Java 8 conversions
Servlets	Autodiscovery	Autodiscovery of configuration beans
Filters	Autodiscovery	Autodiscovery of configuration beans
Concurrency	SimpleReact	Spring Scheduling
Metrics	Codahale Metrics	Codahale metrics with Spring integration
Metadata capture	Incoming IP	Active Requests	Active Jobs
Rest Resources	Manifest	Active Requests	Active Jobs
API Documentation	Swagger
Microservices	multiple embeddable	can share core components (e.g. data source)
Data access	JDBC	Generic JDBC DAO	Spring Data JDBC
ORM	Hibernate	Generic Hibernate DAO	Spring Data JPA