Package msgqueue implements task/job queue with in-memory, SQS, IronMQ backends. go-msgqueue is a thin wrapper for SQS and IronMQ clients that uses Redis to implement rate limiting and call once semantic. go-msgqueue consists of following components: rate limiting is implemented in the processor package using https://github.com/go-redis/redis_rate. Call once is implemented in clients by checking if message name exists in Redis database.