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nginx lua查看共享内存使用情况代码

local ngx_shared = ngx.shared
local dicts = { "base_dict","config_dict","attack_dict","limit_dict","user_define_dict","url_dict","nginx_dict","stream_dict"

}

local re = {}
for _,v in ipairs(dicts) do
    if ngx_shared[v] then
        re[v] = {}
        re[v]["free_space"] = ngx_shared[v]:free_space()
        re[v]["capacity"]   = ngx_shared[v]:capacity()
        local _keys         = ngx_shared[v]:get_keys(0)
        re[v]["keys_cnt"]   = #_keys
    else
        re[v] = "error"
    end
end

ngx.say({ code = "ok", msg = re}) --可以把这部分封装成一个接口,用于调用查询。

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