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express+ejs how to disable caching - Stack Overflow

The homepage index.ejs displays the user name and user avatar, and the clicked personal center will jump to th...

From [MongoDBdiscussion group] 2017-06-10 09:48:06 0  1  977

Mongodb limited query return field query is slower?

When I directly use find to return all fields, the results are as follows. The query time is 155. If I limit t...

From [MongoDBdiscussion group] 2017-05-17 10:04:05 0  1  977

mongodb - How to batch insert data in mongoose?

Using foreach is a bit difficult. Is there any official way to batch insert?

From [MongoDBdiscussion group] 2017-05-02 09:25:41 0  1  976

Yii框架下MongoDB如何查詢單個(gè)Collection下所有數(shù)據(jù)的單個(gè)字段？

網(wǎng)上查了很多資料,基本上是原生方法，或者是只能查詢一條： 以上為例，是否可以查詢?cè)摫碇兴袛?shù)據(jù)的"_id"字段？

From [MongoDBdiscussion group] 2017-04-26 09:03:33 0  2  976

mongodb - pymongo如何一次更新多條記錄？

MySQL: UPDATE user SET age = 36 WHERE name = ’starlee’ Mongo: db.user.update({‘name’ : ’starlee’}, {$set : {‘a(chǎn)...

From [MongoDBdiscussion group] 2017-04-25 09:02:12 0  3  976

使用MongoDB如何改善數(shù)據(jù)空洞

數(shù)據(jù)空洞指的是，一個(gè)表經(jīng)歷了頻繁的update和delete后，其數(shù)據(jù)文件的尺寸大于其數(shù)據(jù)實(shí)際尺寸。比如show dbs看到一個(gè)庫(kù)為400G，導(dǎo)出再導(dǎo)入后就只有250G。

From [MongoDBdiscussion group] 2017-04-22 08:56:10 0  1  976

Mongodb optimization?

The current scenario is: the performance of the machine is that the CPU is very nb. I forgot the model number ...

From [MongoDBdiscussion group] 2017-05-17 10:02:32 0  2  971

mongoDB綁定多個(gè)IP無法啟動(dòng)

配置文件如下： {代碼...} 啟動(dòng)后的錯(cuò)誤日志如下： {代碼...} 求大師指點(diǎn)。

From [MongoDBdiscussion group] 2017-04-28 09:05:20 0  1  971

數(shù)據(jù)庫(kù) - 多級(jí)分類如何遍歷

現(xiàn)有一張表 表結(jié)構(gòu) Id,name,description,parent_id 一個(gè)分類下有多個(gè)子分類，每個(gè)子分類下又會(huì)有子分類，深度多達(dá)10層左右。 分類的排列也是不規(guī)則的，現(xiàn)在希望獲得的結(jié)果如下： 水果 國(guó)產(chǎn)水果 北...

From [MongoDBdiscussion group] 2017-04-24 16:00:58 0  2  969

Problem that updateOne cannot be used in MongoDB

UpdateOne in MongoDB cannot be used under a 32-bit system, and the error in the picture appears. What is the r...

From [MongoDBdiscussion group] 2017-06-17 09:15:30 0  1  968

mongodb - Can mongo non-primary key objectid be empty?

2. {Code...} What if the foreign key is empty and can only store string type?

From [MongoDBdiscussion group] 2017-06-08 11:02:05 0  1  968

MongoDB 傾向于將數(shù)據(jù)都放在一個(gè) Collection 下嗎？

舉個(gè)例子，有一個(gè)用戶信息和用戶間關(guān)系的數(shù)據(jù)庫(kù)，如果按照 SQL 的思路，會(huì)建立用戶信息和用戶關(guān)系兩張表。那么，在 MongoDB 中，是傾向于將用戶關(guān)系嵌入到用戶信號(hào)，組成一個(gè)單獨(dú)的文檔嗎？

From [MongoDBdiscussion group] 2017-04-24 09:09:33 0  3  966

nosql - 對(duì)于prod環(huán)境升級(jí)mongodb數(shù)據(jù)結(jié)構(gòu)有沒有什么best practice

目前有一些工具可以很方便的升級(jí)線上的數(shù)據(jù)庫(kù)的結(jié)構(gòu)，比如ruby寫的rails以及php的doctrine都有migration，不知道m(xù)ongodb有沒有很方便升級(jí)庫(kù)結(jié)構(gòu)的方法。

From [MongoDBdiscussion group] 2017-04-21 10:57:11 0  2  966

mongodb - mongos aggregation 執(zhí)行出錯(cuò)

我想用mongo的聚合算個(gè)uv，但下面的命令，如圖： 報(bào)錯(cuò)，aggregation result exceeds maximum document size (16MB) 文檔中提到這個(gè)問題如圖， http://docs...

From [MongoDBdiscussion group] 2017-04-22 08:59:32 0  2  962

mongodb - Mogodb uses text index, can't it use compound index?

Is it true that if a text index is used, a composite index cannot be used? Because I used the following query ...

From [MongoDBdiscussion group] 2017-05-24 11:31:30 0  1  961