How a sticky session works
When you start a sticky session, the provider ties a session to one exit IP. Every request sent in that session uses the same IP until the timer runs out. After that, the next request gets a new IP from the pool.
Session a7x2k9, 30-minute timer
POST /login 198.51.100.7
GET /account 198.51.100.7
GET /orders 198.51.100.7
After 30 minutes, a new IP
GET /orders 203.0.113.58Sticky session vs IP rotation
Both draw IPs from the same pool. The difference is how long you keep one.
| Sticky session | IP rotation | |
|---|---|---|
| Exit IP | Stays the same for the session time | A new IP on every request |
| Best for | Logins, carts and multi-page flows | Independent page fetches at scale |
| Watch out for | Every request in the session shares one IP’s reputation | Breaks flows that expect the same visitor |
A simple test: does the next request depend on the last one? If it does, use a sticky session.
When to use a sticky session
- Signing in and working through several pages of the same account.
- Testing a multi-step checkout or sign-up form from one location.
- Browsing a store with the same cookies and IP, so prices and stock stay consistent across pages.
Use IP rotation instead when each request stands alone, such as collecting thousands of product pages.
Sticky sessions on FlashIP
FlashIP rotating residential proxies offer two session modes. Request mode gives you a new IP on every request. Sticky sessions keep the same IP for 30, 60, 90 or 120 minutes. To set one up in the console:
- Choose a location.
- Pick a session length.
- Click Generate.
- Click Copy All and paste the details into your tool.
FAQ
How long does a sticky session last?
It depends on the provider. With FlashIP rotating residential proxies, you choose 30, 60, 90 or 120 minutes before you generate the proxy.
What happens when the session ends?
The next request gets a new exit IP from the pool. Anything tied to the old IP, such as a signed-in page, may ask you to sign in again.
Is a sticky session the same as a static IP?
No. A sticky session holds a rotating IP for a limited time. A static IP, such as an ISP proxy, stays assigned to you for the whole plan.