What Is a Rotating Proxy?

You connect to a single gateway hostname provided by your proxy service — `gw.example.com:8000` or similar — and the gateway transparently picks an outbound IP from its pool for each connection. Per-request rotation gives you a new IP for every single HTTP call, which is best for stateless scraping of independent pages. Sticky sessions hold the same IP for a configured window (commonly 1, 10, or 30 minutes) so you can complete multi-step flows like logging in or browsing a search-results-to-detail-page sequence. Most providers expose both, controlled either by which port you connect to or by a username token like `user-session-abc123` that pins the session to a specific outbound IP.

Per-IP rate limits are the cheapest, most common defense a site can deploy — a few rules in Cloudflare or in nginx and any single IP making too many requests gets cut off. Rotation spreads your traffic so no single IP crosses the threshold. It also helps with IP-reputation blocks: if one IP gets flagged, the next request comes from a clean one and you keep moving. Rotation is not a silver bullet — it doesn't help against fingerprint-based detection, behavioral tracking across sessions, or account-level rate limits — but for the large class of sites that block on IP alone, it's the single most effective lever.

Three rules. First, match rotation mode to workflow: per-request for stateless catalog crawling, sticky for login flows and multi-page sequences. Switching mid-flow looks suspicious — a logged-in user's IP doesn't change every request. Second, rotate within geo: a session that starts in Germany and finishes in Brazil is a tell. Most providers let you constrain the pool by country, region, or city. Third, size the pool to the workload — if you're sending 10,000 requests per minute through a 100-IP pool, each IP still averages 100 requests per minute, which is plenty to trigger rate limits. Pool size should comfortably exceed your peak request rate divided by the target site's per-IP limit.