C# web scraping usually pairs HttpClient with an HTML parser such as AngleSharp. Reuse one client, set firm limits, validate every response, and stop pagination loops before saving records. Use Playwright for JavaScript-rendered pages, and add proxies only when a documented routing or location requirement exists.
Latency measures how long data takes to travel across a network, while bandwidth measures how much data a connection can carry at once. Latency is typically measured in milliseconds (ms), and lower latency means faster response times. Bandwidth is measured in Mbps or Gbps, and higher bandwidth allows more data to be transferred simultaneously.
Web scraping used to be a pretty binary situation, either you knew how to write code, or you just weren’t scraping at all. If you lucked out, you’d end up with a duct-taped together script that worked until the website you were scraping sneezed and changed a div. Then it broke, again.
When you clicked on this blog, you most likely got a pop-up at the bottom of the page that read something that said: We value your privacy. We use cookies to enhance your browsing experience, serve personalized ads or content, and analyze our traffic.
CGNAT lets an internet service provider place many subscribers behind a smaller pool of public IPv4 addresses. It is usually invisible during ordinary browsing, streaming, and other outbound activity. You notice it when you try to forward a port, host a server, reach a home device directly, or troubleshoot why unrelated users appear to share your public IP.
Fix a Hypertext Transfer Protocol (HTTP) 405 response by checking the endpoint, request method, and response `Allow` header. Use the documented method, or add the missing route handler when you control the server. Inspect redirects, Cross-Origin Resource Sharing (CORS) preflight requests, gateways, and web-server rules when the method already appears correct.
A Hypertext Transfer Protocol (HTTP) 404 response means the origin found no current representation or declined to disclose one. Visitors can check the address, use the site's navigation, or report a broken link. Site owners should restore the resource, repair the route or link, or redirect only to a relevant replacement.
Network Address Translation, or NAT, changes address information as traffic crosses a network boundary. In the most familiar setup, a home or office router lets devices with private IPv4 addresses share one public IPv4 address.
DNS caching is the temporary storage of DNS lookup results so devices, browsers, routers, and DNS resolvers do not need to repeat the full lookup process every time a domain is visited. Cached DNS records map domain names to IP addresses and remain stored until their Time to Live (TTL) expires or the cache is cleared.
A DNS server is what tells your browser the IP address of a website. When you navigate to a website, you do so via its domain name. Unfortunately, your web browser doesn’t know how to get to that website’s server with a domain. It needs an IP address.
Self-hosted Firecrawl supports outbound proxies through the PROXY_SERVER, PROXY_USERNAME, and PROXY_PASSWORD environment variables. These settings let Firecrawl route supported requests through a proxy instead of relying only on the public IP of the server hosting it.