What is Kong API Gateway?

Kong is Orchestration Microservice API Gateway. Kong provides a flexible abstraction layer that securely manages communication between clients and microservices via API. Also known as an API Gateway, API middleware or in some cases Service Mesh. It is available as open-source project in 2015, its core values are high performance and extensibility. The database could be either Cassandra or Postgres. From version 1.1 it has become possible to run kong without a database