[quote="sagniknitr, post:3, topic:2655"]
Why is it necessary for a intra-process service to share memory ?
[/quote]
Well, they don't need to share memory, but that's the most efficient thing to do when dealing with intra-process.
[quote="sagniknitr, post:3, topic:2655"]
I thought services are mainly used to call specific functions of a sub/pub in a node.
[/quote]
Services may or may not be implemented with pub/sub, but that's up to the middleware implementation. Even if services are implemented with pub/sub, that implementation would occur below where the intra-process optimizations for pub/sub occur.
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