Node.JS:处理服务器每分钟最大请求的最佳方法 [英] Node.JS: Best way to handle max requests per minute to a server
问题描述
很抱歉,如果这个问题已经得到回答,我希望我没有违反任何SO规则,如果是的话,我事先表示歉意... 我想知道处理请求限制器的最佳方法是什么?我在网上看到了许多节流阀和限速器,但不确定如何或是否适用于我的情况.
I'm sorry if this question as already been answered and I hope I'm not breaking any SO rule, if so, in advance I apologise... I was wondering what was the best way to handle a request limiter? I've seen a bunch of throttles and rate-limiters online but I'm not sure how or if it could apply in my case.
我正在基于数组和服务器上执行一堆[OUTGOING]请求,我每分钟只能发出90个请求.我的请求承诺是通过以下命令生成的:return Promise.all(array.map(request))
.
I'm doing a bunch of [OUTGOING] request-promises based on an Array and on a server I can only make 90 request per minute. My request-promises are generated by this command: return Promise.all(array.map(request))
.
我正在考虑这样处理:
var i = 0;
return rp({
url: uri,
json: true,
}).then((data) => {
if (i <=90) {
i ++;
return data;
} else {
return i;
}
});
但是我不确定这是否是处理它的一种真正有效的方法,而且我不确定如何处理时间关系...:S
but I'm not sure if it will be a really effective way to handle it plus, I'm not sure how to handle the time relation yet... :S
预先感谢您的帮助,对不起,我仍然是一个伟大的初学者...
Thanks in advance for your help and sorry I'm still a huge beginner...
推荐答案
如果请求是从不同的代码部分开始的,那么实现诸如 server queue 之类的东西可能会很有用,它会等待请求直到可以这样做.通用处理程序:
If the requests are started from different code parts, it might be useful to implement sth like a server queue which awaits the request until it is allowed to do so. The general handler:
var fromUrl = new Map();
function Server(url, maxPerMinute){
if(fromUrl.has(url)) return fromUrl.get(url);
fromUrl.set(url,this);
this.tld = url;
this.maxPerMinute = maxPerMinute;
this.queue = [];
this.running = false;
}
Server.prototype ={
run(d){
if(this.running && !d) return;
var curr = this.queue.shift();
if(!curr){
this.running = false;
return;
}
var [url,resolve] = curr;
Promise.all([
request(this.tld + url),
new Promise(res => setTimeout(res, 1000*60/this.maxPerMinute)
]).then(([res]) => {
resolve(res);
this.run(true);
});
},
request(url){
return new Promise(res => {
this.queue.push([url,res]);
this.run();
});
}
};
module.exports = Server;
像这样使用:
var google = new require("server")("http://google.com");
google.maxPerMinute = 90;
google.request("/api/v3/hidden/service").then(res => ...);
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