Web Scraper Failover Implementation

I have a web scraper that generally works well but I'm facing some challenges with its failover implementation. I attempted to correct the issues myself but I'm unable to get it to work as needed.

I need an experienced freelancer, ideally with a deep understanding of web scraping and failover mechanisms to help.

Key tasks include:
- Review of the existing codebase
- Implementing failover strategy
- Resolving any issues affecting the code's functionality

I've tried debugging the code myself and believe it's well structured. But I simply can't get the failover to work without assistance.

Ideal freelancer should have:
- Proven experience in web scraping, with examples of successful projects
- Expertise in failover strategies
- Strong debugging skills
- Attention to detail.