tally-plan v3
counter cl100k_base exact=true
window 8
reserve 0
input_limit 8
used 8
pinned 3
overflow false
[pools]
[kept]
0 pinned system 3
3 newest new 5
[truncated]
[dropped]
1 oldest old 3 为满足预算而丢弃（最早的历史，最先牺牲）
2 middle mid 4 为满足预算而丢弃（优先级低于 Newest）
