Performance improvement session reply

[RCVZ]

Problem Statement

I've noticed that session reply handling in the PostHog Flutter SDK could be optimized for better performance. Recently, Sentry made improvements to session management in their Flutter SDK, which resulted in better responsiveness and efficiency. I believe similar optimizations could be beneficial for PostHog as well.

For reference, here are some of the Sentry PRs that introduced these enhancements:

PR #2670
PR #2530
PR #2573

Solution Brainstorm

No response

[marandaneto]

Hello @RCVZ thanks for sharing.
indeed quite some low-level improvements.
I'll take a look!