DOC-7126: Add a scripted LangCache interactive demo

[paoloredis]

A browser-only demo for the Iris launch, in the same style and with the same food delivery sample data as the Context Retriever and Agent Memory demos. Readers send a help assistant's questions in the order they choose and watch hits, misses, and stored entries; replay new questions at a similarity threshold they set, to see the trade-off between hits and wrong answers; and compare a restaurant attribute against no attributes, including deleting a restaurant's entries by attribute.

Request and response shapes, status codes, and defaults follow the LangCache OpenAPI spec and the create-service page. Similarity scores, answers, and timings are illustrative.

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Note

Low Risk
Documentation and static client-side assets only; no production services, auth, or data paths change.

Overview
Adds a browser-only LangCache interactive demo for the Iris docs, aligned with the Context Retriever demo (shared context-retriever-demo.css, same food-delivery sample customers/restaurants).

A new interactive-demo.md page embeds the {{< langcache-demo >}} shortcode, which loads version-hashed CSS/JS. The scripted langcache-demo.js walks readers through three tabs: choosing help-assistant questions and watching cache hits/misses and API-shaped search/store flows; replaying new prompts with an adjustable similarity threshold; and a side-by-side restaurant attribute lane (scoped search/delete vs cross-restaurant wrong answers and stale menu data). Request/response shapes mirror the LangCache API; scores and timings are illustrative only.

The LangCache _index.md gains a link to the new demo page.

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[github-actions]

DOC-7126

[github-actions]

Staging links:
https://redis.io/docs/staging/DOC-7126/develop/ai/context-engine/langcache/
https://redis.io/docs/staging/DOC-7126/develop/ai/context-engine/langcache/interactive-demo/

[github-actions]

🧠 Redis Memory

Found 7 related items from repository history (2 new this commit):

• Commit — DOC-7113: Add a scripted Context Retriever interactive demo

  DOC-7113: Add a scripted Context Retriever interactive demo

• PR — DOC-7113: Add a scripted Context Retriever interactive demo

  Adds a browser-only demo page for Redis Context Retriever, to promote the Redis Iris GA. Sample data from a fictional food delivery app (cus

• PR — DOC-6644 Semantic cache use case example

  Not finished yet - this is just for some early Bugbot reports at this stage.

• PR — DOC-6190 description/difficulty attributes for LangCache examples

  Added descriptions for the LangCache API examples, plus a bit of hidden metadata to indicate the approximate difficulty level of each exampl

• Commit — Add interactive context-map diagram to Iris concepts page

  Add interactive context-map diagram to Iris concepts page

• Commit — DOC-7126: Add a scripted LangCache interactive demo 🆕

  DOC-7126: Add a scripted LangCache interactive demo

• PR — DOC-6565 cache aside use case 🆕

Memory updated at c8e82ae

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Cursor Bugbot has reviewed your changes using high effort and found 1 potential issue.

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[mich-elle-luna]

thank you!