Guides, Tutorials & Insights
Learn about residential proxies, web scraping, data collection strategies, and industry best practices from the Shifter team.
Building a Residential Proxy Manager: Rotation, Health Checks and Retries
The logic that decides which exit to use, when to retire it, and how to recover belongs in one component. Here is how to design it and what state it needs.
Chris Collins · August 26, 2026 Residential Proxy KPIs: The Metrics That Actually Matter
Success rate alone hides more than it reveals. Here are the metrics that tell a scraping team lead whether the pipeline is healthy, and what each one moves.
James Meadow · August 26, 2026 Rate Limiting and Request Throttling with Residential Proxies
A large proxy pool does not exempt you from rate limits, it just changes where they apply. Here is how to pace requests per target, per IP, and across a fleet.
Matt Brown · August 26, 2026 Setting the Right Headers and User-Agent with Residential Proxies
A clean residential IP gets you to the door. Headers decide whether you look like a browser once through it, and consistency matters more than any single value.
Chris Collins · August 26, 2026 How to Detect SERP Volatility and Google Algorithm Updates from Your Own Data
Public volatility trackers measure someone else's keywords. Here is how to build a volatility signal from your own rank data and tell a real update from noise.
James Meadow · August 25, 2026 How to Prevent DNS Leaks When Using Residential Proxies
If your client resolves hostnames locally, your DNS never goes through the proxy. That leaks your location and quietly breaks geo-targeted collection.
Chris Collins · August 25, 2026 How to Whitelist Your IP for Residential Proxies
Short answer: the residential gateway does not use IP whitelisting, it uses credentials. Here is why, where whitelisting does apply, and how to set it up there.
Matt Brown · August 25, 2026 Residential Proxy Authentication: Fixing 407 and Credential Errors
A 407 means the proxy rejected your credentials, and it is almost always one of three causes. Here is the diagnostic order that finds it in a couple of minutes.
Chris Collins · August 25, 2026 Residential Proxy SLAs and Uptime Guarantees Explained
A proxy SLA covers gateway availability, not whether your targets let you through. Here is what the numbers actually promise and what to ask before signing.
James Meadow · August 25, 2026