elasticmq | memory message queue with an Amazon SQS | Pub Sub library

elasticmq is a Scala library typically used in Messaging, Pub Sub, Kafka applications. elasticmq has no bugs, it has no vulnerabilities, it has a Permissive License and it has medium support. You can download it from GitHub.

ElasticMQ is a message queue system, offering an actor-based Scala and an SQS-compatible REST (query) interface. ElasticMQ follows the semantics of SQS. Messages are received by polling the queue. When a message is received, it is blocked for a specified amount of time (the visibility timeout). If the message isn't deleted during that time, it will be again available for delivery. Moreover, queues and messages can be configured to always deliver messages with a delay. The focus in SQS (and ElasticMQ) is to make sure that the messages are delivered. It may happen, however, that a message is delivered twice (if, for example, a client dies after receiving a message and processing it, but before deleting). That's why clients of ElasticMQ (and Amazon SQS) should be idempotent. As ElasticMQ implements a subset of the SQS query (REST) interface, it is a great SQS alternative both for testing purposes (ElasticMQ is easily embeddable) and for creating systems which work both within and outside of the Amazon infrastructure. A simple UI is available for viewing real-time queue statistics.