突发控制多个ajax请求 [英] Burst control over multiple ajax requests

问题描述

我有一个 $。获取的请求列表我使用

I have a list of $.get requests that I handle using

$.when(...requests).then((...responses)=>{})

问题是API Im调用的突发速率，因此立即发送所有请求将使其中一小部分失败。

The problem is theres a burst rate on the API Im calling, so sending all the requests at once will make a fraction of them to fail.

是否有一种简单的方法可以使这些请求不立即使用jquery发送？

Is there a simple way of making these requests not to send immediatly using jquery?

推荐答案

$。得到应该返回Promise接口所以你可以像这个例子一样链接它们：

$.get should return also Promise interface so you can chain them like this example:

var urls = ["url1", "url2", "url3"];
var responses = [];

/*---- vanilla js example for use in snippet ------- */
function fakeGet(url) {
  return new Promise(resolve => setTimeout(resolve, 1000, url + ' response'));
}

urls.reduce((chain, url) => {
  return chain.then(res => {
    res? responses.push(res) : '';
    console.log('getting: ' + url);
    return fakeGet(url);
  });
}, Promise.resolve()).then(res => {
  responses.push(res);
  console.log('Complete!\n' + responses.join("\n"));
});

/* --------------- end of vanilla snippet ---------------*/


/* ------- using jQuery $.get --------------------
urls.reduce((chain, url) => {
  return chain.then(res => {
    res? responses.push(res) : '';
    return $.get(url);
  });
}, $.when()).then(res => {
  responses.push(res);
  console.log('Complete!\n' + responses.join("\n"));
});
---------------------------------------- */

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