added v1.5.7 release notes

[Aaronontheweb]

1.5.7 May 17th 2023

Akka.NET v1.5.7 is a significant release that introduces a major new reliable message delivery feature to Akka.NET and Akka.Cluster.Sharding: Akka.Delivery.

Akka.Delivery

Akka.Delivery is a reliable delivery system that leverages built-in actors, serialization, and persistence to help guarantee that all messages sent from one producer to one consumer will be delivered, in-order, even across process restarts / actor restarts / network outages.

Akka.Delivery's functionality is divded across four libraries:

• Akka - defines the base definitions for all messages, the ProducerController type, and the ConsumerController type;
• Akka.Cluster - contains the serialization definitions for Akka.Delivery;
• Akka.Persistence - contains the EventSourcedProducerQueue implementation, an optional feature that can be used to make the ProducerController's outbound delivery queue persisted to the Akka.Persistence Journal and SnapshotStore; and
• Akka.Cluster.Sharding - contains the definitions for the ShardingProducerController and ShardingConsumerController.

We've documented how these features work in the following two detailed articles official website:

• "Reliable Message Delivery with Akka.Delivery"
• "Reliable Delivery over Akka.Cluster.Sharding"

If you want to see the full set of changes made in Akka.NET v1.5.7, click here.

COMMITS	LOC+	LOC-	AUTHOR
9	13972	135	Aaron Stannard
6	92	88	Ebere Abanonu
4	803	807	Simon Cropp
3	70	53	Gregorius Soedharmo
3	3	3	dependabot[bot]