想请教个问题，实在是找不到资料，我们需要绑定几千个域名，导致每个worker进程内存占用很大，想用lua动态加载证书，ssl_certificate_by_lua_file，我看了很多例子 也是按例子写的，但是偶尔出现某个域名出现不安全连接的提示，再次刷新就好了
        if pemData == nil or keyData == nil then
                ngx.log(ngx.ERR, "faile to set ssl")
                return ngx.exit(ngx.ERROR)
        end

        local cert, err = ssl.parse_pem_cert(pemData)
        if not cert then
                ngx.log(ngx.ERR, "failed to parse PEM cert: ", err)
                return ngx.exit(ngx.ERROR)
        end

        local ok, err = ssl.set_cert(cert)
        if not ok then
                ngx.log(ngx.ERR, "failed to set cert: ", err)
                return ngx.exit(ngx.ERROR)
        end

        local key, err = ssl.parse_pem_priv_key(keyData)
        if not key then
                ngx.log(ngx.ERR, "failed to parse pem key: ", err)
                return ngx.exit(ngx.ERROR)
        end

        local ok, err = ssl.set_priv_key(key)
        if not ok then
                ngx.log(ngx.ERR, "failed to set private key: ", err)
                return ngx.exit(ngx.ERROR)
        end
代码主要是这样的，可能有什么原因，我自己查的话完全没有方向