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最新推荐文章于 2025-12-17 22:33:25 发布

原创最新推荐文章于 2025-12-17 22:33:25 发布 · 607 阅读

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这篇博客通过示例展示了在Node.js环境中，对大型对象进行JSON.stringify、字符串查找以及JSON.parse的性能测试。测试过程中，对象的大小随着迭代逐渐翻倍，结果表明这些操作对事件循环和工作池的影响。

var obj = { a: 1 };
var niter = 20;

var before, str, pos, res, took;

for (var i = 0; i < niter; i++) {
  obj = { obj1: obj, obj2: obj }; // Doubles in size each iter
}

before = process.hrtime();
str = JSON.stringify(obj);
took = process.hrtime(before);
console.log('JSON.stringify took ' + took);

before = process.hrtime();
pos = str.indexOf('nomatch');
took = process.hrtime(before);
console.log('Pure indexof took ' + took);

before = process.hrtime();
res = JSON.parse(str);
took = process.hrtime(before);
console.log('JSON.parse took ' + took);

Don't Block the Event Loop (or the Worker Pool) | Node.js (nodejs.org)