hi i have been working on a crawler that takes input of urls from a text file spits the urls and assigns threads to crawl each of  the url.when i am trying to do this i have an error called memory error that pops up on a machine with 8gb memory and i5 processor.when i look up into the taks manager i find only 25% of ram is being used by the process.I implemented your parallel crawler from youtube but this is giving me a hard time.can you please help me out