Implement ConcurrentLfu events: attempt 3#727

Draft

bitfaster wants to merge 14 commits intomainfrom

users/alexpeck/lfu4

Commits on Jan 9, 2026

part 1
Alex Peck
committed
handle evicted vs removed
Alex Peck
committed
fix test build
Alex Peck
committed
fix tests
Alex Peck
committed
format
Alex Peck
committed
tests + fix props
Alex Peck
committed

Commits on Jan 12, 2026

fix trim and clear
Alex Peck
committed
lfucore
Alex Peck
committed
Merge branch 'main' into users/alexpeck/lfu4
bitfaster
authored

Commits on Jan 13, 2026

test event policies
Alex Peck
committed
make new types internal
Alex Peck
committed
Merge branch 'main' into users/alexpeck/lfu4
bitfaster
authored
proxy comment
Alex Peck
committed

Commits on Jan 14, 2026

TLfu tests
Alex Peck
committed