NSQ
Kenneth Noisewater
Jun 27, 2016
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CommentsWhat is NSQ?
NSQ is a realtime distributed messaging platform designed to operate at scale, handling billions of messages per day. It promotes distributed and decentralized topologies without single points of failure, enabling fault tolerance and high availability coupled with a reliable message delivery guarantee. See features & guarantees.
NSQ is a tool in the Background Jobs category of a tech stack.
Key Features
support distributed topologies with no SPOFhorizontally scalable (no brokers, seamlessly add more nodes to the cluster)low-latency push based message delivery (performance)combination load-balanced and multicast style message routingexcel at both streaming (high-throughput) and job oriented (low-throughput) workloadsprimarily in-memory (beyond a high-water mark messages are transparently kept on disk)runtime discovery service for consumers to find producers (nsqlookupd)transport layer security (TLS)data format agnosticfew dependencies (easy to deploy) and a sane, bounded, default configurationsimple TCP protocol supporting client libraries in any languageHTTP interface for stats, admin actions, and producers (no client library needed to publish)integrates with statsd for realtime instrumentationrobust cluster administration interface (nsqadmin)
NSQ Pros & Cons
Pros of NSQ
- ✓It's in golang
- ✓Distributed
- ✓Lightweight
- ✓Easy setup
- ✓High throughput
- ✓Publish-Subscribe
- ✓Save data if no subscribers are found
- ✓Scalable
- ✓Open source
- ✓Temporarily kept on disk
Cons of NSQ
- ✗Get NSQ behavior out of Kafka but not inverse
- ✗HA
- ✗Long term persistence
NSQ Alternatives & Comparisons
What are some alternatives to NSQ?
Kafka
Kafka is a distributed, partitioned, replicated commit log service. It provides the functionality of a messaging system, but with a unique design.
RabbitMQ
RabbitMQ gives your applications a common platform to send and receive messages, and your messages a safe place to live until received.
Amazon SQS
Transmit any volume of data, at any level of throughput, without losing messages or requiring other services to be always available. With SQS, you can offload the administrative burden of operating and scaling a highly available messaging cluster, while paying a low price for only what you use.
Celery
Celery is an asynchronous task queue/job queue based on distributed message passing. It is focused on real-time operation, but supports scheduling as well.