You gave very small pice of information developers would have more questions than answers from your message, and that's why I assume you didn't get any reply
Here is a good example of a scraping system implementation with hight scalability options and good monitoring tools. If you need to implement so called one-time scraper it would be a bad example but in a long term project case it would be one of the best -
https://github.com/68publishers/crawlerHere for the future questions I would recommend to stick to these rules -
https://stackoverflow.com/help/how-to-ask