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搭建高可用mongodb集群（四）—— 分片 - 大数据 & AI - 清泛网 - 专注C/C++及内核技术
...001
#使用admin数据库
use admin
#定义副本集配置
config = { _id:"shard1", members:[
{_id:0,host:"192.168.0.136:22001"},
{_id:1,host:"192.168.0.137:22001"},
{_id:2,host:"192.168.0.138:22001",arbiterOnly:true}
...
Delete a single record from Entity Framework?
...r table in Entity Framework named employ with a single key column named ID .
15 Answers
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Center/Set Zoom of Map to cover all visible Markers?
I am setting multiple markers on my map and I can set statically the zoom levels and the center but what I want is, to cover all the markers and zoom as much as possible having all markets visible
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Django database query: How to get object by id?
Django automatically creates an id field as primary key.
6 Answers
6
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How may I reference the script tag that loaded the currently-executing script?
...s not work with modules <script type="module">
2. Select script by id
Giving the script an id attribute will let you easily select it by id from within using document.getElementById().
<script id="myscript">
var me = document.getElementById('myscript');
</script>
Benefits
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What is the proper way to URL encode Unicode characters?
... the query string to be encoded as--- for instance, in Tomcat, you have to call request.setEncoding() (or some similar method) before you call any of the request.getParameter() methods. The dearth of documentation on this subject probably reflects the lack of awareness of the problem amongst many de...
How can I remove a button or make it invisible in Android?
How can I remove a button in Android, or make it invisible?
14 Answers
14
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How to style the option of an html “select” element?
...
</select>
Select2 (JS lib)
There's a library you can use called Select2.
Dependencies: Library is JS + CSS + HTML only (does not require JQuery).
Compatibility: IE 8+, Chrome 8+, Firefox 10+, Safari 3+, Opera 10.6+
Demo: https://select2.org/getting-started/basic-usage
There's...
How do I perform an insert and return inserted identity with Dapper?
How do I perform an insert to database and return inserted identity with Dapper?
7 Answers
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MySQL和MongoDB设计实例进行对比 - 大数据 & AI - 清泛网 - 专注C/C++及内核技术
...数表来单独保存。
CREATE TABLE IF NOT EXISTS `mobiles` (
`id` int(10) unsigned NOT NULL AUTO_INCREMENT,
`name` VARCHAR(100) NOT NULL,
`brand` VARCHAR(100) NOT NULL,
PRIMARY KEY (`id`)
);
CREATE TABLE IF NOT EXISTS `mobile_params` (
`id` int(10) unsigned NOT NUL...