---
title: "How we rotate millions of IPs without getting our customers blocked"
description: "Rotation isn't 'pick a random IP per request'. A look at sticky sessions, health checks and the back-pressure that keeps a pool clean."
url: "https://loopway.io/blog/rotating-proxies-without-getting-blocked"
---

[All articles](https://loopway.io/blog) Engineering

# How we rotate millions of IPs without getting our customers blocked

Rotation isn't 'pick a random IP per request'. A look at sticky sessions, health checks and the back-pressure that keeps a pool clean.

 Alex Whitfield Network engineering

May 28, 2026 11 min read

Naive rotation — a fresh random IP on every request — is the fastest way to get a pool blacklisted. Targets notice when a 'user' teleports across continents mid-session. Good rotation is about restraint: changing identity only when it helps, and never when it hurts.

## Sticky sessions are the default, not the exception

Most real workflows — logging in, paginating, checking out — need the same exit IP for a span of minutes. We bind a session token to an exit node and keep it alive until you release it or it fails a health check.

## Health checks and back-pressure

-   Every exit node is probed continuously; nodes that fail are quarantined, not handed out.
-   Per-target error rates feed back into selection, so a node that a specific site has flagged stops being offered for that site.
-   Concurrency limits per node prevent any single IP from looking like a bot farm.

The result is that 'rotation' is really continuous, target-aware pool curation. The customer just sees clean IPs.

## Keep reading

Guides

Jun 10, 2026 8 min read

### [Residential vs. datacenter proxies: which one should you actually use?](https://loopway.io/blog/residential-vs-datacenter-proxies)

Datacenter IPs are faster and cheaper; residential IPs are harder to block. The right answer is almost always 'it depends on the target' — here's a framework for deciding without guessing.

 Alex Whitfield Network engineering

Read More

Ethics & compliance

May 14, 2026 6 min read

### [What ethically sourced proxies actually means](https://loopway.io/blog/ethical-proxy-sourcing)

The proxy industry has a consent problem. Here's the bar we hold ourselves to, and the questions you should ask any provider before you buy.

 Marco Devlin Trust & safety

Read More

Web scraping

Apr 30, 2026 13 min read

### [A pragmatic architecture for scraping at scale](https://loopway.io/blog/scraping-at-scale-architecture)

Queues, retries, proxy budgets and the boring reliability work that separates a weekend script from a system that runs for years.

 Priya Nadar Developer relations

Read More

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