[英]How to limit API calls Per User? Leaky bucket algorithm
I am trying to limit API calls on my app to shopify, the calls are limited at 2 calls each second for each user.我正在尝试将应用程序上的 API 调用限制为 shopify,每个用户的调用限制为每秒 2 次。 I have a domain which i can use to identify each user but I'm trying to use a common node library to do this - I have already built the backend WITHOUT using the shopify official npm package so I am trying to accomplish it with a node library or with a manual bit of code, I really am unsure how I can identify the limits per domain value, I havent seen much resources for this strangely.
我有一个域,我可以用它来识别每个用户,但我正在尝试使用通用节点库来执行此操作 - 我已经在不使用 shopify 官方 npm 包的情况下构建了后端,因此我正在尝试使用节点来完成它库或使用一些手动代码,我真的不确定如何确定每个域值的限制,奇怪的是我没有看到太多资源。
heres what it looks like and the library im using:这是它的外观和我正在使用的库:
I'm trying to use this library:我正在尝试使用这个库:
https://www.npmjs.com/package/leaky-bucket https://www.npmjs.com/package/leaky-bucket
const LeakyBucket = require('leaky-bucket');
var bucket = new LeakyBucket({
capacity: 2, // items per interval, defaults to 60
interval: 1, // seconds, defaults to 60
maxWaitingTime: 60
// seconds, defaults to 300
});
var exports = module.exports = {
getAllOrders: (req, res) => {
const domain = req.params.domain;
console.log(domain)
bucket.throttle(function(domain) {
db.getStoreTocken(domain, (result) => {
const shopRequestUrl = 'https://' + domain + '/admin/orders.json';
const shopRequestHeaders = { 'X-Shopify-Access-Token': result, };
console.log(shopRequestUrl)
console.log(result)
request.get(shopRequestUrl, { headers: shopRequestHeaders }).then((shopResponse) => {
res.status(200).end(shopResponse);
console.log(shopResponse)
}).catch((error) => {
res.status(error.statusCode).send(error.error.error_description);
});
});
})
}
As you can see i parse the domain in this library although it doesnt mention anywhere it can identify it, can i add some domain identifier and mix it with this library or do i have to write my own code and somehow do it, OR just rewrite the damn thing with the official shopify library?正如你所看到的,我解析了这个库中的域,尽管它没有提到它可以识别它的任何地方,我可以添加一些域标识符并将它与这个库混合,还是我必须编写自己的代码并以某种方式执行它,或者只是重写官方shopify库有什么问题?
thanks very much if you can help.如果你能帮忙,非常感谢。
You could create an object that holds a list of buckets per domain:您可以创建一个包含每个域的存储桶列表的对象:
//buckets.js
const LeakyBucket = require('leaky-bucket');
let domains = {};
module.exports = (domain) => {
if(domains[domain]) {
return domains[domain]
}
domains[domain] = new LeakyBucket({
capacity: 2, // items per interval, defaults to 60
interval: 1, // seconds, defaults to 60
maxWaitingTime: 60
// seconds, defaults to 300
});
return domains[domain];
}
That way you create buckets per domain, at the expense of having a cache of buckets.这样你就可以为每个域创建存储桶,但代价是拥有存储桶的缓存。 I don't know if this fits your need and also beware that if you have 2 or more Node.js process running, each process will have a copy in memory of the buckets.
我不知道这是否符合您的需要,并且还要注意,如果您有 2 个或更多 Node.js 进程在运行,则每个进程都会在存储桶的内存中拥有一个副本。
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