Joseph Doherty
cf1b3d40a5
Replace the replay buffer's LinkedList<ReplayEntry> (a node allocation per retained event on the fan-out hot path) with a preallocated ReplayEntry[] ring sized to ReplayBufferCapacity, tracked by _replayHead (oldest) + _replayCount. Appending a retained event now allocates nothing. Behavior preserved exactly: ascending-WorkerSequence append order; capacity eviction (overwrite head + advance when full); time trim via _timeProvider.GetUtcNow() cutoff at the same three call sites; oldest-read for ReplayGap math; both replay-from-sequence query paths + highest-seen tracking; same _replayLock. Capacity-0 stays retain-nothing (guarded early return, no modulo-by-zero). Server build clean (0 warnings); Distributor/Replay tests 33/33 incl. two new cases (multi-wrap ring keeps newest in order; capacity-1 overwrite + gap). Claude-Session: https://claude.ai/code/session_01DMXXvNuPekkkrTEyPNxEkW