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Node.js和多个查询而不会阻塞事件循环

[英]Node.js and multiple queries without blocking event loop

原文 2015-02-01 13:21:29 0 1 node.js/ mongodb/ asynchronous

Consider a situation where 5000 users are there in the mongodb and in one shot for each user we need to do some computation which will query from n number of collections. 考虑一种情况，其中mongodb中有5000个用户，并且每个用户需要拍摄一张照片，我们需要进行一些计算，这些计算将从n个集合中查询。 We will do this everyday at a particular time. 我们将每天在特定时间执行此操作。 How this can be achieved this without blocking the event loop? 如何在不阻止事件循环的情况下实现这一目标？

1 个解决方案

try spawm or fork to create a child process to get what you need done and get the results 尝试使用spawm或fork创建一个子进程，以完成所需的工作并获得结果

http://nodejs.org/api/child_process.html http://nodejs.org/api/child_process.html

also watch this as a guide on how to use it 也请注意这作为如何使用它的指南

How to use parallel child processes to perform "work" on a large array? 如何使用并行子进程在大型阵列上执行“工作”？

Node.js：如果不阻塞事件循环，你将如何重新创建'setTimeout'函数？ - Node.js: How would you recreate the 'setTimeout' function without it blocking the event loop?

Node.js 中的阻塞事件循环仍然存在问题吗？ - Is blocking event loop in Node.js still problem?

如何检测和测量node.js中的事件循环阻塞？ - How to detect and measure event loop blocking in node.js?

Node.JS 如何处理多个请求而不阻塞？ - How Node.JS handles multiple requests without blocking?

sql查询是否会阻塞node.js事件循环？ - Does sql queries block node.js event loop?

Node.js MySQL连接，查询顺序和事件循环 - Node.js MySQL connection, queries order and Event Loop

Sequelize 大型查询的阻塞节点事件循环 - Sequelize blocking node event loop on large queries

Node.JS阻止数据事件 - Node.JS blocking data event

非阻塞循环在Node.js和池？ - Non blocking Loop in Node.js and pooling?

Node.js写入数组而不会阻塞 - Node.js writing to array without blocking

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