Rotating vs sticky residential proxies: how they work and when to use each

The difference in one minute

Rotating

A new exit IP for each new connection or request. Good for spreading load and avoiding per-IP limits. Each request looks like a different visitor.

Sticky

The same exit IP for a set time or until the session goes idle, usually selected with a session ID in your username. Good for logins, baskets and anything multi-step. Every request looks like the same visitor.

Check whether a provider charges differently for the two. PacketStream states that rotating and sticky traffic cost the same¹. The pricing quirk to watch is Evomi’s: its Core rate is the cheapest here, but its “more IPs” option — useful for heavy rotation — uses six times the traffic².

Sticky-session limits by provider

For very long sessions, IPRoyal stands out: up to seven days on traffic that never expires, which is why it’s our pick for long sticky sessions⁵. SOAX reportedly matches the duration, but its credits expire after 60 days¹³. For day-long sessions with strong test results, Decodo and Oxylabs both allow 24 hours^3,7.

How providers implement sessions

The mechanics are similar everywhere: you add a session identifier, and sometimes a duration, to your username. The details are where providers differ — and where jobs break.

Per connection or per request?

Some networks rotate on every request; PacketStream rotates on every new connection⁸. The difference matters because most HTTP clients reuse connections (keep-alive) by default. On a per-connection network, a client that keeps one connection open will keep one exit IP until the connection closes.

Fixed length or idle timeout?

Decodo lets you set a fixed duration in minutes, up to 1,440³. PacketStream uses a rolling timeout instead: the session survives as long as you keep using it and ends after 60 minutes of inactivity⁸. An idle timeout suits bursty flows; a fixed length suits planned ones.

What happens when the home goes offline?

Sticky sessions depend on one household staying online, and households don’t make promises. Providers handle the drop differently. PacketStream fails the session rather than silently switching you to a new IP⁸; IPRoyal gives you a new IP after a disconnect unless you’ve asked for a strict session⁶. Failing is safer for logged-in work: an account that changes IP mid-session can look hijacked.

When to rotate

• Collecting many independent pages — product listings, search results, public profiles.
• Avoiding per-IP rate limits, where a site allows each address only so many requests.
• Sampling by location, where you want many different households in one country or city.

Rotation works best on a large pool. If the pool is small, “new” IPs repeat sooner. Proxyway’s 21-day samples give a rough sense of scale: 3,241,404 unique IPs for Oxylabs and 2,853,543 for Decodo in April 2026, against 1,499,867 for Evomi’s Core pool in July 2026^7,14,2.

When to stick

• Anything behind a login, where a changing IP can trigger security checks.
• Baskets and checkouts, and other flows that span several pages.
• Paginated results, where a site ties the next page to the same visitor.
• Consistency checks, where you need to see exactly what one user in one place sees over time.

Hold a session for as long as the task needs and no longer. Longer sessions concentrate your traffic on one household — and on one peer that may go offline.

Practical tips

1. Decide rotation in code, not by default. If you need a new IP per request on a per-connection network, close connections explicitly.
2. Use unique session IDs per task, so two jobs don’t share an exit by accident.
3. Handle session failure. Retry the whole multi-step flow on a fresh session, not just the failed step.
4. Validate targeting codes. Check country codes against the ISO list in code, not by eye, before they reach the gateway.
5. Count the traffic either way. Whatever the per-GB price, retries add to it. Our pricing guide shows how retries and page weight drive the bill.

New to all this? Start with what residential proxies are and how they work.