Solr has a HTTP/JSON-based API. However, it isn’t exactly a REST API because it doesn’t really follow any of the rules for a well-defined REST interface. I whine about this sometimes.

This step-by-step Spring Boot RESTful web services example needs to generate a JSON-based response for the client. There are excellent frameworks like Jackson and GSON, which you should use in larger ...

The widespread use of ASCII encoding formats like JSON and rest may be killing server performance. A wide variety of emerging binary formats offer significantly improved performance for processing ...