MeiliES is an Event Sourcing database that uses the RESP (REdis Serialization Protocol) to communicate. This way it is possible to create clients by reusing the already available protocol. For example, it is possible to use the official Redis command line interface program to communicate with MeiliES. There is a release blog post if you want to know more. An event store is like a Kafka or a Rabbit MQ but it stores events on disk indefinitely. The first purpose of the server is to publish events of a stream to all subscribed clients, note that events are saved in reception order. A client can also specify from which event number (incrementing) it wants to read, therefore it is possible to recover from crashing by reading and reconstructing a state with only new events. Keep in mind that a message queue is not made for event-sourcing.