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记一次MongoDB性能问题 - 大数据 & AI - 清泛网 - 专注C/C++及内核技术
...<DB>.0，大小是64M，然后是<DB>.1，大小翻番到128M，到了<DB>.5，大小翻番到2G，其后的数据文件就保持在2G大小。为了避免可能出现的问题，可以采用事先手动创建数据文件的策略：
#!/bin/sh
DB_NAME=$1
cd /path/to/$DB_NAME
for INDEX_NU...
绘画动画组件 · App Inventor 2 中文网
...，让一个球形精灵每 500 毫秒（半秒）向画布的顶部移动 4 个像素，您可以将 速度 属性设置为 4 [像素]，
间隔 属性为 500 [毫秒]，方向 属性为90 [度]，启用 属性为真。
这些及其他属性可以随时更改。
球形精灵 和 图像精灵 的...
How do SO_REUSEADDR and SO_REUSEPORT differ?
... for the source address, which can be "any address" (0.0.0.0 in case of IPv4 and :: in case of IPv6). Unlike in case of ports, a socket can really be bound to "any address" which means "all source IP addresses of all local interfaces". If the socket is connected later on, the system has to choose a ...
Signed to unsigned conversion in C - is it always safe?
...plementation. It will be large, but it will not overflow, because:
6.2.5 (9)
A computation involving unsigned operands can never overflow, because a result that cannot be represented by the resulting unsigned integer type is reduced modulo the number that is one greater than the largest val...
Is it a good practice to place C++ definitions in header files?
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Evan TeranEvan Teran
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Set Background color programmatically [duplicate]
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hBrent
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answered May 7 '14 at 12:43
Mohanad ALKHOULIMoha...
Is there a fixed sized queue which removes excessive elements?
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moritzmoritz
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What are Maven goals and phases and what is their difference?
...- maven-compiler-plugin:3.1:testCompile ... --- maven-surefire-plugin:2.12.4:test, while mvn compiler:testCompile just runs --- maven-compiler-plugin:3.1:testCompile ....
– Gerold Broser
Feb 3 '18 at 18:01
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Ignore mapping one property with Automapper
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495
From Jimmy Bogard: CreateMap<Foo, Bar>().ForMember(x => x.Blarg, opt => opt.Ignor...
I lost my .keystore file?
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Vladimir IvanovVladimir Ivanov
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