docs: add Redis limits, Vector pricing, and QStash cancel docs

[context7]

• Redis SELECT and restricted commands — added FAQ entries and a Limitations section, in redis/help/faq.mdx, redis/overall/compatibility.mdx
• Architecture overview for where code runs — added a How Upstash Works page to Concepts and landing page, in common/concepts/how-upstash-works.mdx, docs.json, introduction.mdx
• REST INFO monitoring and usage section — documented INFO over REST with key fields and billing cross-links, in redis/features/restapi.mdx, redis/overall/billing.mdx
• Dedicated Vector pricing page — surfaced pay-as-you-go costs, free plan and regions on the Pricing page, in vector/overall/pricing.mdx
• Bulk cancel QStash messages endpoint — documented DELETE /v2/messages with messageIds queries and the 200 response, in qstash/sdks/ts/examples/messages.mdx
• Vector limits consolidated in one place — consolidated sizes, topK and batches, linked from the FAQ, in vector/overall/pricing.mdx
• Custom retry surfaced in SDK quickstart — linked the retries page at client initialization, in redis/sdks/ts/getstarted.mdx
• Custom retry surfaced in SDK quickstart — same retries link added for discoverability, in redis/sdks/ts/getstarted.mdx
• Custom retry surfaced in SDK quickstart — same retries link added for discoverability, in redis/sdks/ts/getstarted.mdx
• List databases developer API endpoints — already documented: the spec renders reference pages and auth docs cover it

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[context7]

Docs7 for upstash.com

Result	Status	Action
Deployment	✅ Ready	Open preview

Commit 7b7f095 · Updated 2026-09-10 02:13 UTC · View build details