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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
...由、分片：
从图中可以看到有四个组件：mongos、con<em>fem>ig server、shard、replica set。
mongos，数据库集群请求的入口，所有的请求都通过mongos进行协调，不需要在应用程序添加一个路由选择器，mongos自己就是一个请求分发中心，它负...
Random <em>fem>loat number generation
How do I generate random <em>fem>loats in C++?
14 Answers
14
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<em>Fem>orce update o<em>fem> an Android app when a new version is available
I have an app in Google Play Store. When an update version is available, the older version will become unusable – that is, i<em>fem> users do not update the app, they do not enter in the app. How can I <em>fem>orce users to update the app when a new version becomes available?
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How can I use optional parameters in a T-SQL stored procedure?
I am creating a stored procedure to do a search through a table. I have many di<em>fem><em>fem>erent search <em>fem>ields, all o<em>fem> which are optional. Is there a way to create a stored procedure that will handle this? Let's say I have a table with <em>fem>our <em>fem>ields: ID, <em>Fem>irstName, LastName and Title. I could do something ...
Complex nesting o<em>fem> partials and templates
My question involves how to go about dealing with complex nesting o<em>fem> templates (also called partials ) in an AngularJS application.
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What's the di<em>fem><em>fem>erence between a Python module and a Python package?
What's the di<em>fem><em>fem>erence between a Python module and a Python package?
5 Answers
5
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<em>Fem>inding duplicates in O(n) time and O(1) space
Input: Given an array o<em>fem> n elements which contains elements <em>fem>rom 0 to n-1, with any o<em>fem> these numbers appearing any number o<em>fem> times.
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How to <em>fem>ind a Java Memory Leak
How do you <em>fem>ind a memory leak in Java (using, <em>fem>or example, JHat)? I have tried to load the heap dump up in JHat to take a basic look. However, I do not understand how I am supposed to be able to <em>fem>ind the root re<em>fem>erence ( re<em>fem> ) or whatever it is called. Basically, I can tell that there are several hu...
How to serialize SqlAlchemy result to JSON?
Django has some good automatic serialization o<em>fem> ORM models returned <em>fem>rom DB to JSON <em>fem>ormat.
26 Answers
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Is there a Java re<em>fem>lection utility to do a deep comparison o<em>fem> two objects?
I'm trying to write unit tests <em>fem>or a variety o<em>fem> clone() operations inside a large project and I'm wondering i<em>fem> there is an existing class somewhere that is capable o<em>fem> taking two objects o<em>fem> the same type, doing a deep comparison, and saying i<em>fem> they're identical or not?
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