I'd like to know more about:<p>* clustering - what kinds of clusters are supported? How do they scale? Do they favor availability or consistency?<p>* security - is there any authentication? authorization for certain resources? TLS?<p>* guarantuees for delivery? Transactional modes?<p>* what does the wire protocol look like? Support for meta data?<p>I clicked around the website and documentation a bit, and didn't find any answers.
NATS is legit -- Derek Collison has experience in messaging systems going back a very long way.<p>Cloud Foundry still has a bunch of NATS-based services because Derek was one of the founders of the first versions, back when Cloud Foundry was a VMWare skunkworks effort (VCAP).<p>Disclaimer: I work for Pivotal Labs, a division of Pivotal, which contributes the largest amount of engineering effort to Cloud Foundry. Apcera is, nominally, a competitor. I should also mention that my understanding of CF's early history is based on accounts I've heard and might be flawed.