VB.NET如何使用多线程？

Question

I have example MultiThreading in VB. Net, I using thread to spider site,, I have a problem:

I have to syncLock to lock sql query select top 1 link from tblSite where process = 0 and i update process = 1, End SyncLock

I spider content with links, and i update LastUpdate in DB, An Proces = 0... ..

I do it slowly, can i help about performance with multi thread. And i use to spider?

Answer 1

Async IO you must use. And sync table in process not, but server place lock let instead.