Shared Sample Cache for Data Readers

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Shared Sample Cache for Data Readers

Is it possible to set up Data Readers to use shared memory for their sample caches?  I'm working with a system where I'd like to use DDS as a distributed shared object cache where there will be multiple Data Readers/Writers of the same topic that exist in the same process as well as across processes/systems.  My main concern is speed and scalability as the sample sizes will be small but there could be potentially 100,000+ objects/samples at a time and the systems I will be working with will have limited memory.