RFCs

Design proposals — accepted, rejected, or implemented — that informed the architecture. Every RFC is dated and tracked through to its final disposition.

#	Title	Status
0001	Backend-owned eviction	Closed — Rejected (spike measured, hypothesis falsified, code removed)
0002	Generic Item[V] typing	Phase 1 implemented (the Typed[T, V] wrapper); Phase 2 (deep generics) deferred to v3

When to write one

For changes whose blast radius extends beyond a single PR — wire formats, public API shape, multi-phase refactors, or anything that needs a paper trail of "we tried X and it didn't work, here's why" so future contributors don't re-tread the same ground.

Skip the RFC for bug fixes, internal refactors, and feature work whose shape is already obvious from the code.