mongodb - How to solve this mongo error?

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From [MongoDBdiscussion group] 2017-05-17 10:02:10 0  2  969

mongodb - python mongo findAndModify how to limit quantity

There is a query parameter and an update tag in findAndMondify, but how to limit the number of searches is to ...

From [MongoDBdiscussion group] 2017-05-17 10:03:22 0  1  968

mongodb - Steps to enable user authentication in mongdb sharded deployment

I want to realize the following scenario: {Code...} Currently, I am stuck on how to configure and enable user ...

From [MongoDBdiscussion group] 2017-05-02 09:25:02 0  2  968

mongodb - mongo多个条件分组

mongodb 有哪些 实现多个多个分组的？我知道mapreduce可以，还有吗？？

From [MongoDBdiscussion group] 2017-04-27 09:01:58 0  3  967

mongodb 外网IP启动失败

centos 部署mongodb 服务器。 启动命令 /usr/local/mongodb/bin/mongod --bind_ip 内网ip 或127.0.0.1 --port 27017 --maxConns 200...

From [MongoDBdiscussion group] 2017-04-26 09:02:01 0  4  967

mongodb下求一个用户所在地collection设计方案

一个用户表单,需要用户选择所在地(省,市,区),并且要实现省市区三个下拉框的三级联动,数据库部分该怎么设计? ｓｑｌ数据库下实现过，但ｍｏｎｇｏｄｂ下有没有更好的设计方案.

From [MongoDBdiscussion group] 2017-04-21 11:17:32 0  3  965

mongodb - e-commerce platform, how is the monthly sales volume of products calculated?

For example, the total sales volume in a month is 500 pieces. On February 1st, the sales volume was 11 pieces,...

From [MongoDBdiscussion group] 2017-05-17 10:02:35 0  1  964

How to check query performance of mongodb aggregation?

You can use explain('executionStats') to view the query analysis using find, but there is no explain query ana...

From [MongoDBdiscussion group] 2017-05-02 09:26:35 0  1  964

mongodb - 如何查询所有时间落在某个月份上面

1，需要查询某个表中的数据为某个月份的时间。2，比如说 要查询活动表中所有9月份的活动。所有年份都可以。只取落在9月份的活动3，使用的是springdatamongo.用criteria如何组装这种条件。4，聚合函数暂时...

From [MongoDBdiscussion group] 2017-05-02 09:22:22 0  1  960

node.js - Express-session implements cookie issues in login verification

The current situation is that there is a cookie on the browser side, the name is config.session.key('myblog'),...

From [MongoDBdiscussion group] 2017-05-02 09:26:17 0  1  959

javascript - The problem of using MongoDb to store session data in Node and Express development. According to the book, the following questions appeared. I have been searching for a long time and cannot find the answer. I would like to ask everyone for advice.

Error code for using MongoDb to store session data: // Using mongoDb to store session data {code...} An error ...

From [MongoDBdiscussion group] 2017-06-10 09:48:01 0  2  957

The mongodb database is attacked and the database is deleted. How to recover the data?

The mongodb database is attacked and the database is deleted. How to restore the data? There is no backup data...

From [MongoDBdiscussion group] 2017-05-02 09:24:40 0  1  957

golang - How to make reads evenly distributed to each secondary when go connects to mongo replica set?

Replicaset has two secondary, Eventual mode, but when using labix/mgo.v2 to connect to mongo, it is found that...

From [MongoDBdiscussion group] 2017-05-02 09:24:30 0  1  957

mongodb3.x - mongodb data migration (mongorestore, mongoimport) error

I now want to migrate local Mongo data (50GB) to Alibaba Cloud (memory 1G). The local version is v2.4.9, and t...

From [MongoDBdiscussion group] 2017-05-02 09:23:08 0  2  949

mongoengine - MongoDB怎么设计多级分类好？

文章以及课程模型需要定义所属分类，该分类是多级的，MongoDB中怎么设计比较合理？如果直接定义在文档里，担心一致性的问题！

From [MongoDBdiscussion group] 2017-04-22 08:59:46 0  6  949