Rotating vs Sticky Sessions: Which Proxy Rotation Do You Need?

Rotation is the setting people get wrong most often, because both extremes look reasonable until you run them against a real site.

The two modes

Rotating gives you a different IP on every request, or every few minutes. Requests spread across a pool, so no single address accumulates a suspicious request count.

Sticky holds one IP for a defined window — commonly 1, 5, 10 or 30 minutes — so a sequence of requests appears to come from one person.

Neither is better. They solve opposite problems.

When rotation wins

Independent page fetches. Scraping a million product pages where each is unrelated to the last. Nothing carries between requests, so a new IP every time costs nothing and spreads your load across the pool.

Beating rate limits. Limits are usually enforced per IP. Ten thousand requests from one address gets blocked; ten thousand spread over five hundred addresses does not.

Wide geographic sampling. Checking how search results or prices differ by location means you want a different IP, ideally in a different place.

When sticky wins

Anything with a login. Authenticate on one IP and make the next request from another country and you will be logged out — often with the account flagged. Sessions must stay on one address.

Multi-step flows. Add to basket, go to checkout, enter shipping, pay. Change IP mid-flow and the site sees a hijacked session, because that is exactly what it looks like.

Cookie-dependent scraping. Sites that set a token on first visit and validate it later will reject the token if it arrives from a new address.

Account management. Running social or marketplace accounts needs each account tied to a consistent IP. Rotating is the fastest way to get them banned — see proxies for social media.

The mistake in both directions

Rotating a logged-in session is the more common one. Everything works while you are logged out, then breaks the moment you authenticate, and the failure looks like a site bug rather than a rotation problem.

Sticking too long on bulk scraping is the quieter one. Twenty thousand requests over an hour from one residential IP is not what a human looks like, and that address will be burned for everyone who gets it next.

Picking a duration

If you are using sticky sessions, match the window to your task:

Task	Window
Login, then a handful of pages	10 minutes
Checkout flow	10–30 minutes
Long-running account session	30 minutes or a static IP
Search results, no login	Rotate every request
Bulk product pages	Rotate every request

When a task genuinely needs the same IP for days — running a marketplace account, say — sticky sessions are the wrong tool. Use a dedicated ISP proxy, where the address is yours until you cancel it.

How this maps to proxy types

Residential proxies are where rotation settings matter most, and where you configure the window.

ISP and datacenter proxies are static by default: one IP, yours for the term. You rotate by distributing requests across several proxies rather than by a rotation setting. That is often simpler to reason about, and for logged-in work it is what you want anyway.

Mobile proxies rotate when the carrier reassigns the address, and you can usually force a rotation on demand.

A rule that holds up

If the target knows who you are, keep the IP. If it does not, change it.

Logged in, holding a cart, carrying a session token — stay put. Fetching public pages that do not care who is asking — rotate freely.

Most real projects need both: a rotating pool for discovery and a sticky session for anything behind a login. Splitting the two rather than forcing one setting on everything is usually the fix when a scraper “works and then stops working”.

See pricing for what each type costs, or how many proxies you need for sizing the rotating half.