Changed Proxy Region but Still See Old Content? Test Service Worker Caches

You switch a residential proxy to another region, but an owned web app still shows the earlier catalog. The browser may be rendering a local service-worker response without requesting the origin. Region routing and application cache behavior must be tested independently; old content is not sufficient evidence that the exit IP failed to change.

Define what should vary by region

Choose a harmless staging page with two known regional variants and a visible fixture version. Specify whether region is derived from the network, account preference or explicit URL. Define the offline fallback and how fresh it must be. A fixed account preference can legitimately override a route change, so settle the product rule first.

Capture browser and network evidence

• Before changing state, record the final page origin, service-worker registration scope, active/waiting versions and whether the page has a controller.
• In developer tools, inspect the selected request's actual response source and Cache Storage entries. Keep HTTP cache, service-worker caches and CDN cache as separate observations.
• Compare the displayed version and region with the underlying response and an authorized origin log or fixture reference. A screenshot alone cannot prove a network request occurred.

Do not save cookies, authorization headers or personal cached payloads in the report. Keep only sanitized cache names, resource paths, fixture markers and response-source evidence. Scope limits matter: a registration for one origin does not automatically explain a page on another origin.

Run a four-case matrix

• Fresh region A: a clean browser context, route A and normally installed app. Capture first navigation and the controlled reload separately.
• Fresh region B: another clean context with route B, same account fixture and app build. Acquire its own state through the normal workflow.
• Reused context: return to the A context and change only the approved route to B. Observe whether the application updates, serves its documented fallback or incorrectly persists A.
• Owned-site diagnostic: use the browser's supported service-worker bypass control for a separate observation and compare the network response. Restore normal behavior afterward; this diagnostic is not the final user-experience acceptance case.

If fresh B is correct but reused A remains wrong, investigate state selection and cache policy. If bypassed network content is also wrong, inspect account selection and origin/CDN behavior. If all cases intentionally show A under the documented preference, the expectation may be wrong. Do not fix every mismatch by wiping storage.

Verify updates and offline behavior

On staging, deploy a second known worker/app version and observe installation, waiting and activation under the application's actual lifecycle. An available update is not necessarily already controlling the current page. Close/reopen or use the approved update flow, then verify the active controller and displayed fixture version agree.

Test a brief approved offline period after each regional case. Fallback content must be identified as such and must not leak a previous account's data. Cache keys, invalidation and logout cleanup should follow the application's data classification. Fix those rules on your own app; do not broadly cache authenticated responses or force worker activation without assessing mixed-version behavior.

Use 98IP for the route, then test the app

Use 98IP dynamic residential proxies when authorized QA needs residential regional viewpoints. Select available account settings and follow the operation guides. Verify the observed exit for each case; the proxy does not clear local storage or redefine the app's region policy.

No specific session lifetime, browser compatibility or freshness result is promised here. Pause on access denial or rate limits; do not rotate routes to bypass restrictions.

Acceptance checklist and FAQ

• Fresh and reused contexts meet the documented regional rule, with actual response-source evidence.
• Worker activation and content versions agree after the approved update flow.
• Offline fallback is labeled and logout/account changes preserve data isolation.

Does switching IP clear a service-worker cache? Do not assume it does; local application state is separate.

Does disabling HTTP cache eliminate worker responses? Do not assume so. Inspect the actual worker and Cache Storage behavior.

Is an empty-cache test enough? No. Returning-user and update cases are part of the real experience.

Use only owned or authorized sites and disposable test accounts. Respect terms and data protection. This is an acceptance plan, not a measured 98IP benchmark.