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I’m currently trying to find out whether it’s a good idea to transfer rather large byte arrays (<50MB) over RMI.
I read that it is slow and the data needs to be hold in memory both on the client and the server. This could result into a problem when there are multiple calls.
Are there any (simple) alternatives to this?
RMI is intended to transfer objects. If you have a byte array object on the server and want it on the client you must have it both places until it has been delivered successfully (then you can let the original go away).
A more reasonable approach might be repeated calls populating a remote object transferring only a small chunk at a time. This will then in turn require multiple trips making it slower.
What is the actual (non-technical) problem you want to solve?