Spectacular! One other use case - can a caller request a response from
every registered callee (i.e., the same RPC registered by each device in
an IoT network)? If that's possible, would Crossbar just aggregate the
results from all callees and return them to the caller (maybe using the
"Progress" options feature if desired as well)? If so, is there an
example of this lurking anywhere?
What you describe is indeed an upcoming feature .. both variants you mention:
- aggregate in router (as the router doesn't know anything about app stuff, this will just accumulated a list)
- immediately forward results as progressive results
This is a 1-to-all pattern.
It's a long planned thing (in the spec), but now we have the basic stuff in place to actually add it.
We will also have "sharding", where a call is forwarded to the correct data partition / callee.
This will work with any WAMP client library for callees. Including the (also upcoming) PostgreSQL PL/SQL WAMP.
And that will then be really cool: call into your PostgreSQL shards directly into your PL/SQL stored procedures. It's a story in itself .. anyway. Stay tuned for even more stuff!
I have to admit, I'm loving this stuff. :^)
Please spread the word ..
Am 30.03.2015 um 22:55 schrieb Dave Barndt:
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