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java中的缓存技术该如何实现 - 更多技术 - 清泛网 - 专注C/C++及内核技术
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JBossCache是一个复制的事务处理缓存，它允许你缓存企业级应用数据来更好的改善性能。缓存数据被自动复制，让你轻松进行JBoss服务器之间 的集群工作。JBossCache能够通过JBoss应用服务或其他J2EE容器来运行一个MBean服务，当...
Debug vs. Release performance
...s not clear whether it's one microsecond slower or twenty minutes slower. "10% slower under realistic conditions" is more meaningful.
Spend the time you would have spent researching this question online on building a device which answers the question. You'll get far more accurate results that way...
Fastest way to check a string contain another substring in JavaScript?
...ster) <-- wow
Firefox: cached RegExp (~18% faster)
IE11: cached RegExp(~10% faster)
Edge: indexOf (~18% faster)
Safari: cached RegExp(~0.4% faster)
Note that cached RegExp is: var r = new RegExp('simple'); var c = r.test(str); as opposed to: /simple/.test(str)
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What data type to use for money in Java? [closed]
...);
Custom MonetaryAmount operations
// A monetary operator that returns 10% of the input MonetaryAmount
// Implemented using Java 8 Lambdas
MonetaryOperator tenPercentOperator = (MonetaryAmount amount) -> {
BigDecimal baseAmount = amount.getNumber().numberValue(BigDecimal.class);
BigDecima...
Why is string concatenation faster than array join?
... on a fast browser and either option you choose will gain them 0.001s, but 10% of your users will gain 2s if you choose to penalize the other users out of that 0.001s... the decision is clear. if you can't see it, i am sorry for whoever you code for.
– gcb
Feb ...
Find all storage devices attached to a Linux machine [closed]
...ec,nosuid,gid=5,mode=0620)
tmpfs on /run type tmpfs (rw,noexec,nosuid,size=10%,mode=0755)
none on /run/lock type tmpfs (rw,noexec,nosuid,nodev,size=5242880)
none on /run/shm type tmpfs (rw,nosuid,nodev)
/dev/xvda2 on /mnt type ext3 (rw)
And /proc/partitions says:
root@ip-10-126-247-82:~# cat /pro...
Can I set an opacity only to the background image of a div?
...eight: 400px;
opacity: 0.9;
}
#text {
position: absolute;
top: 10%;
left: 0;
width: 100%;
text-align: center;
}
.middle{
text-align: center;
}
section small{
background-color: #262626;
padding: 12px;
color: whitesmoke;
letter-spacing: 1.5px;
}
section ...
Total memory used by Python process?
...ocess explorer? The number from psutil always seems to be larger by about 10%.
– wordsforthewise
May 13 '15 at 22:42
40
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SQL join: selecting the last records in a one-to-many relationship
...y and straightforward solution, in MY case (many customers, few purchases) 10% faster then @Stefan Haberl's solution and more than 10 times better than accepted answer
– Juraj Bezručka
May 22 '18 at 10:27
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Why is the parent div height zero when it has floated children
...dth: 90%;
}
.lbar{
text-align: justify;
float: left;
width: 10%;
}
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