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分布式系统的事务处理 - 大数据 & AI - 清泛网 - 专注C/C++及内核技术
...问题。
3）数据一致性的问题又会引发性能问题
这就是软件开发，按下了葫芦起了瓢。
一致性模型
说起数据一致性来说，简单说有三种类型（当然，如果细分的话，还有很多一致性模型，如：顺序一致性，FIFO一致性，会话...
Dispelling the UIImage imageNamed: FUD
Edit Feb 2014: Note that this question dates from iOS 2.0! Image requirements and handling have moved on a lot since then. Retina makes images bigger and loading them slightly more complex. With the built in support for iPad and retina images, you should certainly use ImageNamed in your code .
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What are good message queue options for nodejs? [closed]
...ed at resque but not sure that's appropriate. The goal is to push notifications to clients based on backend and other client actions with socketio. I could do this with just socketio but I thought maybe a proper message queue would make this cleaner and I wouldn't have to reinvent the wheel.
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How do I load a file from resource folder?
...sloader.getResourceAsStream("test.csv");
If the above doesn't work, various projects have been added the following class: ClassLoaderUtil1 (code here).2
Here are some examples of how that class is used:
src\main\java\com\company\test\YourCallingClass.java
src\main\java\com\opensymphony\xwork2\...
UICollectionView inside a UITableViewCell — dynamic height?
One of our application screens requires us to place a UICollectionView inside of a UITableViewCell . This UICollectionView will have a dynamic number of items, resulting in a height which must be calculated dynamically as well. However, I am running into problems trying to calculate the heigh...
Delete files older than 3 months old in a directory using .NET
... files in a certain directory older than 3 months, but I guess the date period could be flexible.
18 Answers
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Wait until file is unlocked in .NET
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This was the answer I gave on a related question:
/// <summary>
/// Blocks until the file is not locked any more.
/// </summary>
/// <param name="fullPath"></param>
bool WaitForFile(string fullPath)
{
int numTries...
Spring RestTemplate - how to enable full debugging/logging of requests/responses?
...king to see the same things as I see when I use curl with the "verbose" option turned on. For example :
27 Answers
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Convert JSON string to dict using Python
I'm a little bit confused with JSON in Python.
To me, it seems like a dictionary, and for that reason
I'm trying to do that:
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How to read XML using XPath in Java
I want to read XML data using XPath in Java, so for the information I have gathered I am not able to parse XML according to my requirement.
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