【性能调优】定时器堆积：大量延迟任务的性能治理

local taskPool = {}
local function registerTask(interval, fn)
    taskPool[interval] = taskPool[interval] or {}
    table.insert(taskPool[interval], fn)
end
setontimerex(230, 1)
function ontimer230()
    local tick = os.time() % 60
    for interval, fns in pairs(taskPool) do
        if tick % interval == 0 then
            for _, fn in ipairs(fns) do
                fn()
            end
        end
    end
end

local function auditTimers()
    local cnt = 0
    for interval, fns in pairs(taskPool) do
        cnt = cnt + #fns
    end
    if cnt > 100 then
        sendmail("#开发组", 955, "定时器堆积告警",
            "活跃定时器 " .. cnt .. " 个，建议合并低频任务", "")
    end
end