• Visual studio 2017 RC installation tutorial


    The last time I saw the blog about visual studio 2017 RC, I saw that one of the improvements was that it started quickly, which was a great progress and the expectation of programmers with low-cost computers. But I haven’t experienced it yet. It’s a donkey or a mule. I’ll start downloading it. 1. Open […]

  • Examples of test scripts for indexing and locking at RR and RC isolation levels


    Basic concepts Current Reading and Snapshot Reading In MVCC, read operations can be divided into two categories: snapshot read and current read. Snapshot reading, read the visible version of the record (possibly the historical version), without locking. Currently, the latest version of the record is read, and the returned record is locked to ensure that […]