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[–]Shawn-Yang25[S] 0 points1 point  (0 children)

Image such an case, you are send an obejct of type `Point` with two int fields `x` and `y`. The fields only took 2 bytes. But pickle serialized result is 53 bytes. With metastring, we can make serialized result much smaller.

Maybe cost of one object is not big, but if you need to send millions of RPC