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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
...个数据表 Collection1 存储了 1T 数据，压力太大了！在分给4个机器后，每个机器都是256G，则分摊了集中在一台机器的压力。也许有人问一台机器硬盘加大一点不就可以了，为什么要分给四台机器呢？不要光想到存储空间，实际运...
What do numbers using 0x notation mean?
...rals that start with 0x are hexadecimal integers. (base 16)
The number 0x6400 is 25600.
6 * 16^3 + 4 * 16^2 = 25600
For an example including letters (also used in hexadecimal notation where A = 10, B = 11 ... F = 15)
The number 0x6BF0 is 27632.
6 * 16^3 + 11 * 16^2 + 15 * 16^1 = 27632
24576 ...
Changing names of parameterized tests
...o set my own custom test case names when using parameterized tests in JUnit4?
12 Answers
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How does Spring Data JPA differ from Hibernate for large projects?
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So, spring-data does some extra magic that helps with complex queries. It is strange at first an...
How to configure Ruby on Rails with no database?
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Uncomment this line in the environment.rb file:
config.frameworks -= [ :active_record, :active_...
Intellij IDEA show javadoc automatically
...ut code completion, on mouse over : see stackoverflow.com/a/22759295/1677594 (show quick doc on mouse move)
– Guillaume Husta
May 13 '14 at 13:07
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Execute Insert command and return inserted Id in Sql
I am inserting some values into a SQL table using C# in MVC 4. Actually, I want to insert values and return the 'ID' of last inserted record. I use the following code.
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