WEIMI / THREE DIFFERENT CACHE QUESTIONS
Define the response policy using the behaviour you actually need.
A buyer asks that an operator’s vending report not be stored in a shared workstation’s HTTP cache. The supplier points to a response marked no-cache and says the requirement is covered. The report may be refreshed before ordinary reuse, but that does not establish that it was never stored. This is an invented procurement scenario, not an observed WEIMI configuration.
The disagreement is about the meaning of a familiar name. Storage, reuse and history restoration are different behaviours. A report can be stored while requiring validation before reuse, and a browser can display an earlier page through a history mechanism without making the ordinary new request the buyer expected.
The MDN Cache-Control reference, reviewed on 11 October 2026, explicitly distinguishes those concepts. This guide uses that reference to frame a purchasing contract for an offered report service. It inspects no live operator data and changes no cache or session configuration.
If the requirement is that HTTP caches should not store a response, no-cache is not the matching instruction. MDN says no-cache permits storage but requires validation with the origin server before reuse. The no-store response directive instead tells private and shared caches not to store that response.
If the requirement is to exclude shared-cache storage while permitting browser-local caching, private expresses a different boundary. MDN describes a private cache as client-local, and a shared cache as an intermediary such as a proxy or CDN that may reuse a response for multiple users.
Agree the report’s intended storage and reuse policy with the implementation owner. Review browser history separately: the reference says no-cache does not guarantee revalidation for Back-button history navigation. Do not claim that a header alone ends a session, revokes permissions, removes downloaded copies or erases every earlier page snapshot.
This is a narrow comparison of response directives. It does not replace review of the complete response policy, actual delivery route or browser behaviour.
| Response directive | Storage meaning in the reference | Procurement distinction |
|---|---|---|
| no-cache | Response may be stored; validate with origin before each reuse. | Freshness checking is not a prohibition on storage. |
| private | Storage only in a private cache such as a browser cache. | Excludes shared-cache storage, while local storage remains permitted. |
| no-store | Private and shared caches should not store this response. | Matches a no-HTTP-response-storage intent, with other copy mechanisms reviewed separately. |
| must-revalidate | Stored response may be reused while fresh; validate when stale. | Not the same rule as no-cache and not a no-storage policy. |
Use this brief when an offer includes personalised operator reports or management pages and the buyer has a specific response-storage requirement. It is relevant to shared workstations and services delivered through caching intermediaries. Identify the actual report route before assigning a policy to a cabinet.
The information owner should classify the response and state whether local or shared storage is permitted. The software owner should define the response directives. The deployment owner should explain intermediary handling. The buyer should retain the agreed boundary and evidence scope.
A hardware-only quotation may not include a report service. Inventory-management wording does not establish an HTTP cache policy. If a separate platform supplies the report, direct the requirement to that party and name it in the acceptance record.
The three equipment candidates below are selected from public listings. We have not opened their operator reports, inspected response headers or tested caching. The following is a proposed evidence plan for the supplied service in a separately authorised environment with harmless test content.
First, define the response class: a public asset, a personalised report or another operational page. Record whether private-cache storage, shared-cache storage and ordinary reuse are permitted. Do not apply one blanket instruction to every asset without a reason; a logo and an operator report can have different policies.
Second, ask the provider to show the delivered response policy for the agreed report route. Retain the response-directive evidence and the deployment context. A configuration screenshot alone does not establish what the client receives through the actual delivery path.
Third, review ordinary repeat requests according to the agreed cache rules. Separate observations about storage from observations about revalidation or reuse. A response arriving from the origin once does not establish that a cache never stored it or that every later route behaves identically.
Finally, review browser history as a distinct case on the supported platform. Record what is restored and whether a new request occurs, without using the Back button as proof of current server authorisation. Retain the browser, service version and limits. This article establishes no test result for a WEIMI service.
The information class. Define which responses carry personalised or sensitive operational content. MDN warns that personalised responses stored in a shared cache may be reused for multiple users. The buyer should not infer isolation merely from the fact that the page was first reached after login.
Storage versus reuse. Write the requirement in ordinary language before selecting a directive. If local HTTP storage is prohibited, a requirement to revalidate before reuse is too narrow. If local storage is permitted but shared reuse is not, that is another contract. Avoid scoring these as the same checkbox.
Private-cache scope. The private directive permits browser-local storage. That can be appropriate for one requirement while failing another. A policy name containing private does not mean no copies exist on the device. Keep shared-workstation handling and device ownership in the broader operational brief.
No-store scope. The cited response directive tells HTTP caches not to store the response. Do not extend that statement to downloaded files, screenshots, application-managed storage or automatic deletion of every previously retained response. Those mechanisms need their own evidence and policy.
History navigation. MDN explains that no-cache and must-revalidate do not guarantee revalidation during history restoration. A page snapshot is not the same as a new report request. Agree what the operator should see and how current access is enforced without making a header do the job of session management.
Complete response context. Ask the implementation owner to explain the policy as delivered, including relevant intermediary behaviour. The source distinguishes shared and private caches and notes that unrecognised directives are ignored by user agents. Retain supported-context evidence rather than a universal browser claim.
Separate session controls. Logout, server-side authorisation and response caching are related operational concerns but different controls. A no-store response does not prove that an old authenticated session is invalid. A terminated session does not by itself document every client copy. Request each result through its own evidence.
Change review. A new report route or delivery configuration can alter the response policy. Retain the service version and an owner for future review. An accepted directive on one page should not stand in for all reports, APIs or static assets.
These three real manufacturer listings form a hardware shortlist. “Best” means a proposed fit for the merchandise and format, subject to quotation. No report-cache control is independently verified for any candidate.
1 / PACKAGED GOODS RECOGNITION
The single-door AI vision listing describes camera recognition, five shelf levels and five baskets, with a top-screen or light-box option. Confirm cooling and recognition scope for the stock. It stores compatible packaged products and does not prepare fresh juice. Ask whether any reporting service is supplied before requesting its response-storage evidence.
2 / MIXED SNACK AND DRINK DISPENSING
WM22 is publicly described with a 21.5-inch touchscreen, inventory management and cooling. Spiral, conveyor, direct-push and hanging mechanisms appear as options; confirm the mechanism in the offer. Inventory management does not establish a cache directive. Define the actual reports and their information class in the software scope.
3 / AN EXPANDED VISIBLE STATION
The dual-cabinet listing shows a main product display with an additional visible spiral stock area. Do not infer shared software, independent cooling, a second screen or capacity. If a platform partner supplies reporting, identify the delivery route and owner responsible for its cache-storage policy.
Use the listing to compare physical equipment. Treat the final column as a request for unverified software scope, not an attributed feature.
| Candidate | Public-listing basis | Report-storage evidence to request |
|---|---|---|
| Single-Door AI Vision Smart Fridge for Packaged Drinks | Camera recognition, five shelf levels and five baskets; top-screen/light-box option. | Identify the report component and its private/shared storage policy. |
| WM22 Snacks and Drinks Vending Machine | 21.5-inch touchscreen, inventory management, cooling and optional mechanisms. | Classify the supplied reports and show delivered response directives. |
| Two Cabinets, More Choice: Snack & Drink Vending Station | Main display plus additional visible spiral stock area. | Name the platform and delivery-route policy owner. |
No verified equipment prices, cache-policy engineering fees or measured disclosure costs are available from the cited evidence. The following is a hypothetical labour-planning example, not ROI evidence, a supplier quotation or a forecast of avoided loss.
Assume twenty minutes to classify the report responses, forty minutes to review ordinary request behaviour and thirty minutes to record history observations and ownership. The total assumed effort is ninety minutes. At an assumed labour rate of USD 38 per hour, the illustrative review cost is USD 57.
For a separate later addition, assume two new report routes each take fifteen minutes to review. Thirty minutes at the same rate would cost USD 19. This is invented planning arithmetic, not measured engineering time or proof that every new report needs the same work.
Obtain actual implementation and review quotations for the service involved. Do not infer reduced support incidents, eliminated leakage or increased sales from this small time budget. The purchasing output is an explicit response-storage contract with evidence and a named owner.
| Illustrative task | Explicit assumption | Labour cost at USD 38/hour |
|---|---|---|
| Classify report responses | 20 minutes. | About USD 12.67. |
| Review ordinary request behaviour | 40 minutes. | About USD 25.33. |
| Record history observations and owner | 30 minutes. | USD 19; combined USD 57. |
| Separate new-route review | 2 × 15 minutes = 30 minutes. | USD 19; not measured implementation cost. |
A packaged-drink pilot with a few reports. Consider the AI vision fridge where the offered recognition and handling fit the assortment. If a report service is included, classify those responses and agree the storage boundary rather than accepting no-cache as a general privacy label.
A mixed fleet using shared workstations. Consider WM22 for the actual pack and dispensing requirements. Review HTTP response policy, browser history and session termination separately. One control should not be credited with outcomes belonging to the others.
A station delivered through a platform partner. Consider the dual-cabinet format for merchandising needs. Identify the partner and delivery route for reports. A normal cabinet demonstration does not establish private or shared cache behaviour in that separate service.
For personalised stock reports, define whether local storage is permitted and whether any shared cache may retain the response. The answer should come from the information requirement and actual service, not the familiar word cache in a directive.
For a public product image, a different caching policy may be appropriate. Do not infer that every resource must share the operator-report policy. The buying brief should identify response classes rather than prescribe one header for the entire website.
For shared workstation use, review history restoration and operational sign-out procedures as distinct evidence. Seeing an earlier page does not prove a new authorised request occurred. A response-storage instruction does not replace a device-use policy.
For reporting changes, retain a route-level acceptance record. A newly introduced API response or delivery intermediary may have different behaviour from the original page. Record what was observed without claiming all future responses are covered.
No. MDN says a response with no-cache may be stored but must be validated with the origin server before each reuse. The word cache in the directive should not be read as a blanket storage prohibition.
No. The private response directive permits storage in a private cache and excludes shared-cache storage. It is a different requirement from no-store.
The no-store response directive says private and shared caches should not store the response. That is an HTTP cache instruction, not a claim that every copy or browser-history state has been erased.
No. MDN explains that history navigation may restore a page snapshot and that no-cache does not guarantee revalidation for it. Review history behaviour separately from new-request behaviour.
No. Their public listings provide equipment features. Confirm the actual reporting service, deployment route and policy owner before crediting any response-cache control.
No. It proposes controlled evidence with harmless test content. No real report, browser storage or production response has been examined, and no cache policy has been changed.
Define storage, ordinary reuse and history restoration separately. MDN’s distinctions make the central point clear: no-cache allows storage with revalidation, private limits storage to private caches, and no-store instructs HTTP caches not to store the response. Request evidence for the delivered policy and supported route.
Choose the hardware for the merchandise and site, then confirm the supplied report service. None of the shortlisted listings establishes caching behaviour. The useful acceptance record is an explicit, versioned storage policy with separate session and copy-handling requirements.
Share the merchandise range, equipment format and operator-report workflows your project needs. Ask WEIMI to identify the reporting software scope and its delivery owner. Request an agreed review of response-storage and reuse requirements before accepting that service.
