ChuckLu - 博客园

2022年7月8日

摘要：在讨论阻塞与加锁之前，需要先理解一些核心概念：并发性、事务、隔离级别、阻塞锁及死锁。并发性是指多个进程在相同时间访问或者更改共享数据的能力。一般情况而言，一个系统在互不干扰的情况下可以激活的并发用户的进程数越多，该系统的并发性就越强。就像通常所说的系统性能表现，系统同时处理的并发用户数越多，说明系阅读全文

posted @ 2022-07-08 14:37 ChuckLu 阅读(190) 评论(0) 推荐(0)

Questions About T-SQL Transaction Isolation Levels You Were Too Shy to Ask

摘要： Questions About T-SQL Transaction Isolation Levels You Were Too Shy to Ask Every time you access a relational database to make a query, you have an im 阅读全文

posted @ 2022-07-08 14:31 ChuckLu 阅读(50) 评论(0) 推荐(0)

SQL Server table hints – WITH (NOLOCK) best practices

摘要： SQL Server table hints – WITH (NOLOCK) best practices SQL Server table hints are a special type of explicit command that is used to override the defau 阅读全文

posted @ 2022-07-08 14:30 ChuckLu 阅读(80) 评论(0) 推荐(0)

2022年7月5日

await keyword blocks main thread

摘要： await keyword blocks main thread 问题 So I have the following code private async void button1_Click(object sender, EventArgs e) { await DoSomethingAsync 阅读全文

posted @ 2022-07-05 16:21 ChuckLu 阅读(43) 评论(0) 推荐(0)

When correctly use Task.Run and when just async-await

摘要： When correctly use Task.Run and when just async-await 回答 Note the guidelines for performing work on a UI thread, collected on my blog: Don't block the 阅读全文

posted @ 2022-07-05 14:45 ChuckLu 阅读(46) 评论(0) 推荐(0)

What is the difference between await Task<T> and Task<T>.Result?

摘要： What is the difference between await Task<T> and Task<T>.Result? 问题 public async Task<string> GetName(int id) { Task<string> nameTask = Task.Factory.S 阅读全文

posted @ 2022-07-05 14:16 ChuckLu 阅读(39) 评论(0) 推荐(0)

What is the use for Task.FromResult<TResult> in C#

摘要： What is the use for Task.FromResult<TResult> in C# 问题 In C# and TPL (Task Parallel Library), the Task class represents an ongoing work that produces a 阅读全文

posted @ 2022-07-05 13:54 ChuckLu 阅读(200) 评论(0) 推荐(0)

How do you create an asynchronous method in C#?

摘要： How do you create an asynchronous method in C#? 问题 Every blog post I've read tells you how to consume an asynchronous method in C#, but for some odd r 阅读全文

posted @ 2022-07-05 13:48 ChuckLu 阅读(40) 评论(0) 推荐(0)

Should I worry about "This async method lacks 'await' operators and will run synchronously" warning

摘要： Should I worry about "This async method lacks 'await' operators and will run synchronously" warning 问题 I have a interface which exposes some async met 阅读全文

posted @ 2022-07-05 11:16 ChuckLu 阅读(236) 评论(0) 推荐(0)

2022年7月4日

C# string reference type?

摘要： C# string reference type? 回答1 The reference to the string is passed by value. There's a big difference between passing a reference by value and passin 阅读全文

posted @ 2022-07-04 19:11 ChuckLu 阅读(76) 评论(0) 推荐(0)

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