Optimizing in-process gRPC with Go 1.23 Iterators and Coroutines

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A few years back I have been exploring solutions for the in-process gRPC pattern in Go, for the Thanos project . Recently, a friend and a Thanos maintainer Filip refreshed the initial Thanos solution with the new Go 1.23 iterators . This created a perfect opportunity to share, in a co-authored blog post, what Filip and I learned about the new iterators, new coroutines (not goroutines!) and what options you have for the production in-process gRPC logic.