【入门夯实】冷热分层：角色变量的读写频率分层管理

local function onHitBad(actor)
    actor = getplayerbyname(actor)
    local combo = (tonumber(getplayvar(actor, "HUMAN", "Combo")) or 0) + 1
    setplayvar(actor, "HUMAN", "Combo", combo, 1)
end

local hotCache = {}
local function onHitGood(actor)
    actor = getplayerbyname(actor)
    local key = tostring(actor)
    hotCache[key] = (hotCache[key] or 0) + 1
    if hotCache[key] % 10 == 0 then
        sendmsg(actor, 1, "连击 " .. hotCache[key] .. " 次！")
    end
end
local function onBattleEnd(actor)
    actor = getplayerbyname(actor)
    local key = tostring(actor)
    local combo = hotCache[key] or 0
    if combo > 0 then
        setplayvar(actor, "HUMAN", "MaxCombo", math.max(combo,
            tonumber(getplayvar(actor, "HUMAN", "MaxCombo")) or 0), 1)
        hotCache[key] = nil
    end
end

local function classify(key)
    local hot = { Combo = true, BufLayer = true, TempScore = true }
    return hot[key] and "memory" or "database"
end