Akka

Akka, developed by Lightbend, is a toolkit designed for building highly concurrent, distributed, and resilient message-driven applications in Java and Scala. It aims to enable developers to create systems that can scale up and out, recover from failures, and deliver high performance with efficient memory usage. Akka is suitable for businesses of various sizes, including startups, large enterprises, and Global 2000 organizations. It is widely adopted by software developers, system architects, DevOps engineers, and professionals in industries such as financial services, e-commerce, telecommunications, healthcare, and gaming.

Key Features

Simpler Concurrent & Distributed Systems: According to the vendor, Akka leverages the Actor Model and Streams to enable developers to build highly concurrent and distributed applications. It offers lightweight concurrency and asynchronous, non-blocking stream processing, simplifying the handling of large volumes of data.

Resilient by Design: The vendor claims that Akka is built on the principles of The Reactive Manifesto, allowing developers to create self-healing systems that remain responsive even in the face of failures. It provides supervision strategies and fault tolerance mechanisms for graceful handling and recovery from failures.

High Performance: Akka is designed for scalability, with the vendor stating that it can handle up to 200 million messages per second on a single machine. It aims to have a small memory footprint, accommodating approximately 2.5 million actors per GB of heap.

Elastic & Decentralized: The vendor claims that Akka enables the development of distributed systems without single points of failure. It offers features like load balancing, adaptive routing across nodes, and support for Event Sourcing and Command Query Responsibility Segregation (CQRS) with Cluster Sharding. Akka also provides Distributed Data for eventual consistency using Conflict-free Replicated Data Types (CRDTs).

Reactive Streaming Data: According to the vendor, Akka offers fully asynchronous and streaming HTTP server and client capabilities, making it suitable for building microservices. It supports backpressure, ensuring efficient handling of data streams. Additionally, Akka integrates seamlessly with Alpakka, which provides streaming connectors for various data sources and sinks.

Akka Insights: Akka Insights is a monitoring and observability tool purpose-built for Akka applications, developed by Lightbend. It aims to provide deep visibility into applications built with Akka, helping developers discover, understand, and troubleshoot complex relationships within distributed services. The vendor claims that Akka Insights offers version support for Akka applications.