I'm building a single-page app ( started before Pedestal was announced 
sadly ) and I'm using the fetch library to support RPC from client -> JVM 
server.

I'm seeing a very strange behaviour. I've defined a view-model ns (full of 
defrecords) for the client data. This has worked well - the client can read 
and write records over the wire.

Except there's one situation where it does not work. If the client sends a 
record to the server and the server has not previously sent at least one 
instance of that defrecord type to the client then I see a 
ClassNotFoundException. As soon as I read one instance from the server 
(using fetch) then the problem goes away.

This means that the first users of new JVMs will experience this error - 
not great for elastic computing.

I've tried:
1/ aot compiling the namespace
2/ reading and writing dummy view-model instances in the namespace on load
3/ importing and requiring all classes in the ns where I to the read-string

None of these seem to work.

Does anybody have an understanding of the read-string class-loading 
behaviour that would explain this? Any suggestion would be much appreciated.

Steve

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