How can long-running operations be made safer?
怎样确保一个费时的操作安全？
Break up long-running operations into smaller chunks to meet this goal.
将执行时间长的操作分解成符合要求的小块。
A service is a component that runs in the background to perform long-running operations or to perform work for remote processes.
service是在后台运行长时间操作或者执行远程进程工作组件。
Table 1 shows some techniques for finding long-running operations in a UI thread, along with the advantages and disadvantages.
表1介绍了一些用于发现UI线程上长时间运行的操作的技术，以及它们的优缺点。
What are some examples of such long running operations?
那么长时间运行的操作有哪些例子呢？
You might see examples of prime factorizations of large integers, or sorting huge lists of complex data structures, and those are certainly long running operations.
您可能见到过大整数质因数分解，或是对复杂数据结构的庞大列表进行分类，这些都是长时间运行的操作。
This really brings me to the more general use case for multiple threads: long running operations.
这也让我想起了多线程的一个更常用的用例：长时间运行的操作。
A contact task contains concurrent or asynchronous operations is a long-running process, and progress at every step needs to be saved to a database.
包含并发或异步操作的联系任务是一个长期运行的进程，每一步进展都要被保存到数据库。
Until the deficiency is resolved, the Open SCA component must use a pair of one-way interfaces to communicate with long running request-response operations.
在解决该不足之前，OpenSCA组件必须使用一对单向接口来与长时间运行的请求-响应操作进行通信。
OLTP compression-drop column is supported, but internally the database sets the column UNUSED to avoid long-running decompression and recompression operations.
对于oltp压缩也是不支持列删除，但是我们可以把列设置为unused的，避免解压缩和重新压缩操作队它的影响。
OLTP compression-drop column is supported, but internally the database sets the column UNUSED to avoid long-running decompression and recompression operations.
对于oltp压缩也是不支持列删除，但是我们可以把列设置为unused的，避免解压缩和重新压缩操作队它的影响。
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