我在node.js中使用 firebase.database().ref(‘someBigNode’).once(‘value’, (snapshot) => { //do something } 但这个节点太大了，光启动就耗了1.5G的内存，想问问如果我只想分批把这些资料抓下来，没有要写入修改的话该怎么做才能节省内存呢?
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