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淘宝网采用什么技术架构来实现网站高负载的 - 更多技术 - 清泛网 - 专注C/C...
...异步通信，这里我们首先来说下同步通信，下面的主题“消息系 统”会说到异步通信。既然需要通信，这个时候一个高性能的远程调用框架就显得非常总要啦，因此咱们淘宝也有了自己的HSF框 架。
上 面所说的都是拆分的好处...
How do I access the host machine itself from the iPhone simulator
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Otherwise this error is going to happen.
Cannot start load of Task <xx-xx>.<x> since it does not conform to ATS policy.
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What is Data Transfer Object?
...s prohibited because of circular/cyclic dependency.
User Service ----> XX CANNOT CALL XX ----> Order Service
Some ORM Frameworks have the ability of projection via using additional interfaces or classes. So repositories can return View objects directly. There for you do not need an addition...
Returning redirect as response to XHR request
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In the case of a redirect to a 401 (or any 4xx or 5xx error) I'd assume your program would behave as if the request led directly to a 401. Is that not what you're seeing?
– greim
Jan 15 '14 at 22:16
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Renaming columns in pandas
...can do something like: new_columns = df.columns.values; new_columns[0] = 'XX'; df.columns = new_columns
– cd98
Nov 20 '13 at 14:18
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How to Correctly Use Lists in R?
...n away, but not very far, and not very fast")
x <- strsplit(stuff, ",")
xx <- unlist(strsplit(stuff, ","))
In the first case (x : which returns a list), you can tell what the 2nd "part" of the 3rd string was, eg: x[[3]][2]. How could you do the same using xx now that the results have been "u...
Android ViewPager - Show preview of page on left and right
...just use below code:
android:clipToPadding="false"
android:paddingLeft="XX"
android:paddingRight="XX"
For example:
<androidx.viewpager.widget.ViewPager
android:id="@+id/viewpager"
android:layout_width="match_parent"
android:layout_height="match_parent"
a...
How to update Python?
... in the 2.7 root folder it will not delete them ;)
– XXN
Jan 24 '19 at 16:12
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How do you connect to multiple MySQL databases on a single webpage?
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Warning : mysql_xx functions are deprecated since php 5.5 and removed since php 7.0 (see http://php.net/manual/intro.mysql.php), use mysqli_xx functions or see the answer below from @Troelskn
You can make multiple calls to mysql_connect()...
Cassandra port usage - how are the ports used?
...or current versions of Cassandra:
7199 - JMX (was 8080 pre Cassandra 0.8.xx)
7000 - Internode communication (not used if TLS enabled)
7001 - TLS Internode communication (used if TLS enabled)
9160 - Thrift client API
9042 - CQL native transport port
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