Longer answer; Mostly because I had reached some hard limits of Rails in my own applications.
说的再详细一些，主要是因为我在编写Rails应用的时候遇到了一些很难逾越的限制。
When these hard limits are reached, the entire queue manager and all connected applications come to a halt.
当达到这些硬限制时，整个队列管理器和所有已连接的应用程序都将停顿下来。
Rebuilding the entire LV was the only way to expand a striped LV beyond the hard limits imposed by the disk capacities.
要扩展stripeLV以超过磁盘容量所规定的硬限制，唯一的办法就是重新构建整个LV。
This is why (for example) the Apache web server places limits on the number of concurrent processes that it will spawn (both soft limits and hard limits).
正因如此，(例如)ApacheWeb服务器对其生成的并发进程数量进行了限制(包括软性限制和硬性限制)。
The DBA has control over whether a given chunk or storage space can be grown so the DBA can tell Informix to enforce hard limits on the space used by a particular storage space.
DBA可控制是否可以增长给定块或存储空间，以便DBA告诉Informix对特定存储空间使用的空间执行硬限制。
To track down the true limits on your applications' speed, you need to be prepared to tackle both the hard and the easy problems of performance.
要追踪到您的应用程序在速度上的确切限制，您需要准备处理困难和简单的性能问题。
It also provides a method to define a set of hard and soft disk block and file allocation limits and the grace periods before the soft limit becomes enforced as the hard limit.
它还提供了一种方法来定义一组磁盘块和文件分配的硬、软限制，以及软限制强制实施为硬限制前的过渡期。
But these limits are so exact and constricting that it's hard to imagine a wet system such as the brain ever achieving them.
但是这些限制非常确切而且严格以至于人们很难想象像大脑这样的湿系统可以满足它们。
The metropolis is sometimes called "Maximum City", because it is always pressed up hard against its limits.
这个大都市有时被称为‘最大化的城市’，因为它总是最大程度的对抗他的限制。
If the children did well because they worked hard, they wanted problems that would test their limits and teach them how to do even better.
如果孩子因为勤奋而做的很好，他们就希望难题来弥补自己的不足并且告诉他们该如何做得更好。
But again there are limits: it is hard to breed the full recommended daily dose of nutrients into plants this way.
但同时这些计划都有所局限：通过把营养元素“种进”作物的方法，完全达到推荐的日营养摄入剂量是很困难的。
I suggest using the terms "current limit" and "upper limit" for process limits (never using the terms "soft" and "hard") so there's no confusion.
我建议为进程界限使用术语“当前界限”和“上限”(永远不要使用术语“软”和“硬”)，那样就没有任何迷惑了。
Outside Taiyuan's city limits, the views quickly changed from harsh industrial wastelands to agrarian vistas of sowed fields and hard-grown crops of corn.
在太原城界之外，景色迅速的从荒芜的产业废地转换成了播种过的耕地和硬茎的谷类植物。
In my own research, published in the Hard Hand of War, I was impressed by the extent to which the combatants placed limits on the destructiveness.
我自己的研究结论，发表于《硬手(hard hand)战争》中，我对战斗人员进行破坏时的节制程度是印象深刻的。
But no matter how hard we tried, the only liberty we found... was on the inside... trapped within those limits.
然而无论我们如何努力，我们所找到的唯一自由，是在我们内心身处，被那些限制所围困。
The researchers said many doctors accepted amounts exceeding recommended limits, but that it was hard to sort out which payments were inappropriate.
调查员说很多医生的总收入是受限制的，但是很难调查出其哪项报酬是不正当的。
However, old habits die hard, and the use of size limits is deeply ingrained in our collective fisheries management DNA.
但是旧习难除大小限制深深地扎根在我们渔业管理的DNA中。
Although that is hard for us to understand because we live within the limits of time, yet it is true that God always was and will be.
虽然这对我们来说是难以理解的，因为我们生活在时间的局限里，但是神的确一直在那里，并且永远在那里。
The traditional tracer has the disadvantages of lower transmission precision, hulking body, and it is hard to fix and transport. This limits its maneuverability.
传统的航迹仪传动精度不高，体积庞大，重量大，搬运和安装不便，这样限制了它的可灵活操作性。
It's hard to ignore the fact that all these tools are at root about imposing limits and narrowing options-in other words, about a voluntary abnegation of freedom.
我们很难忽视这样一个事实：所有这些手段从根本上都是关于强加限制和减少选择，关于自愿地放弃自由。
Work hard, push your limits, never stop learning, and always remember to have some fun along the way.
药努力工作，突破极限，好学不厌。还要永远记住，时刻都要让自己开心。
It's hard to ignore the fact that all these tools are at root about imposing limits and narrowing options-in other words, about a voluntary abnegation of freedom.
一个不容忽视的事实是，所有这些工具在根本上还都是强加限制和减少可做的选择——换言之就是主动舍弃部分自由。
Minutes beyond the city limits, it's hard to recall that chimera at all.
但是在进入城市之后的数分钟内，却很难产生这种幻觉。
Credit limits are proving hard to enforce and are being further undermined by inflows of hot money from abroad.
限制发放贷款已经被证明很难真正得到实施，并且会为未来海外热钱涌入中国埋下隐患。
The technology of soft-switch has been one of the most active directions in the power electronics field. It overcomes the limits of hard-switch working.
软开关技术是电力电子学领域最活跃的研究方向之一，克服了硬开关工作方式中存在的缺陷。
He was going to enjoy life within the limits of the discipline that he imposed and worked hard.
他一心实行自己规定的生活准则和努力工作的要求。
If these parks are too close to the city for you, parks just outside the city limits are so full of wild life that it's hard to imagine that you're a short bus ride from the city.
假如这些公园对你而言太靠近城市了，那市区范围外的公园到处都有野生动物，很难想像那里离城市只有一小段的公车路程而已。
It was actually a new experience for me as I've worked hard and been fortunate enough to be able to grow my business well while working within set daily time limits.
虽然我已经很努力的工作了，但是我很幸运，有足够的时间与经历去准求我的事业，而且还有舒适的工作时间日常生活。
If you get the room for free for example, and the projector breaks half way through the day… you can try hard but really there are limits to what you can do.
例如当你进了某个场馆，投影仪突然坏了… 你想尽力弥补但是能力往往有限。
If you get the room for free for example, and the projector breaks half way through the day… you can try hard but really there are limits to what you can do.
例如当你进了某个场馆，投影仪突然坏了… 你想尽力弥补但是能力往往有限。
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