The decision is not about which mode is better. It is about whether the target needs continuity or diversity for the task at hand.
What rotation actually changes
Rotation selects a new exit IP from the pool, usually per request or after a short interval. Each request appears to come from a different household. That is ideal for independent lookups where no state should carry over, such as checking a public product page across many URLs.
Rotation also limits the damage of a bad IP. If one address is rate-limited, the next request can use a different one. The trade-off is that any server-side state tied to the IP is lost between requests.
When sticky sessions matter
Some flows assume a stable client identity. A login sets a session cookie; a checkout reserves inventory; a multi-step form stores progress server-side. If the IP changes mid-flow, the target may invalidate the session or flag the account.
A sticky session keeps the same exit IP for a fixed window. In Graviix, a session identifier is passed with the request so the gateway keeps routing through the same peer until the session expires or is released.
curl -x http://proxy.graviix.com:8080 \
-U "USERNAME:PASSWORD" \
-H "X-Graviix-Session: checkout-7f3a" \
https://example.com/accountPicking a session length
Match the window to the flow, not to a round number. A checkout might need five minutes. A dashboard refresh might need thirty. A long-running research job may need several hours, but every extra minute increases the chance that the peer connection drops or the IP gets flagged.
A useful pattern is short sessions with a stable identifier per logical task. Generate one identifier per account or per workflow, reuse it while the task is active, and discard it when the task completes.
- Per-request rotation: independent page fetches, price snapshots, sitemap discovery.
- Short sticky sessions: forms, carts, paginated results that depend on server state.
- Long sticky sessions: dashboards, account monitoring, workflows that require a consistent IP for hours.
Symptoms of the wrong mode
If a workflow logs out, loses a cart, or returns different content between steps, rotation is probably breaking state. If a target starts returning 403 or 429 after a burst, the session may be too long or too aggressive for that endpoint. Change one variable at a time and keep logs that include the session identifier and exit IP.
Designing session identifiers
A session identifier should be stable for one logical task and unique across tasks. Include the workflow name and a short unique value, for example an order lookup or a monitoring job. Avoid identifiers that encode personal data, because they may appear in logs, dashboards, and support tickets.
Resist the temptation to reuse one identifier for everything. A single long-lived session concentrates risk: if that peer is blocked, every workflow using it fails together. Separate identifiers also make it possible to release a session when a task ends rather than waiting for expiry.
Testing how a target treats sessions
Before committing to a session strategy, run a small experiment. Request the same page twenty times with rotation and record how often the content changes for reasons unrelated to the page itself. Then repeat with a sticky session and compare.
Some targets set cookies that persist regardless of IP, which means rotation alone does not reset state. Others bind a session to the address and will invalidate it when the IP changes. The experiment tells you which behaviour you are dealing with, and therefore which mode avoids self-inflicted failures.
Keep the experiment small and respectful. The goal is to understand mechanics, not to stress the endpoint.
When to release a session early
Sticky sessions usually expire on a timer, but some workflows finish long before that. Releasing the session when the task completes frees the peer for other work and reduces the chance that a stale session is reused by mistake.
Build release into the task lifecycle: acquire, work, release. If the process crashes, the session should expire on its own; do not depend on cleanup code that may never run.
Track how long sessions are actually held versus how long they are configured to live. A large gap means the configuration is wasting capacity, and a small gap means tasks are being cut off before they finish.
Key takeaways
- Rotate when requests are independent; stay sticky when state must survive across steps.
- Choose session length from the workflow, not from a default.
- Log session identifiers so failures can be traced to a specific exit IP.
Frequently asked questions
Does a sticky session guarantee the same IP for its full duration?
It keeps the same peer while the session is alive and healthy. If the peer disconnects, the gateway may assign a replacement. Design workflows to tolerate a rare IP change.
Can I use multiple sticky sessions at the same time?
Yes. Use a different session identifier for each logical task. Parallel sessions let you isolate accounts or workflows without sharing state.
Is rotation better for scraping?
For independent URLs, rotation spreads load and reduces the impact of a single flagged IP. For flows that depend on cookies or server-side state, sticky sessions usually produce more consistent results.
Need proxies for this workflow?
Graviix provides residential, mobile, datacenter, and static ISP proxies with country and city targeting, rotating or sticky sessions, and a documented HTTP API.
