NSQ is a realtime distributed messaging platform designed to operate at bitly’s scale, handling billions of messages per day (current peak of 90k+ messages per second).

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.

Operationally, NSQ is easy to configure and deploy (all parameters are specified on the command line and compiled binaries have no runtime dependencies). For maximum flexibility, it is agnostic to data format (messages can be JSON, MsgPack, go-protobuf, or anything else). Official Go and Python libraries are available out of the box and, if you’re interested in building your own client, there’s a protocol spec (see client libraries).

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