413b712c0a
- Schema phase 1 (tasks 01-02): EntityId, EntityKind, Timestamp, Score, SignalTypeDef, DecayModel, Window, WindowSet — all with property tests and benchmarks scaffolding - Stub modules for storage, signals, query, ranking - Full documentation suite: VISION, USE_CASES, SEQUENCE, API, CODING_GUIDELINES, ai-lookup, research docs, specs, roadmap, planning docs - Marketing site (Next.js) with blog infrastructure - .claude/ agents and skills for the tidalDB development workflow - Foundation standards enforced: thiserror + tracing declared as dependencies, clippy::unwrap_used = deny added to lint config - .gitignore hardened: .next/, node_modules/, .env, secrets, logs Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
66 lines
1.4 KiB
Markdown
66 lines
1.4 KiB
Markdown
# Query Language
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**Last Updated:** 2026-02-19
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**Confidence:** High
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## Summary
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The query interface is a single operation that encapsulates candidate retrieval, filtering, ranking, and diversity enforcement. Three primary operations: RETRIEVE (feed/browse), SEARCH (text+semantic), and SIGNAL (engagement write-back).
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**Key Facts:**
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- One query replaces what currently requires 6 systems
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- RETRIEVE: feed generation, browse, related content
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- SEARCH: keyword + semantic + hybrid retrieval
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- SIGNAL: engagement event write-back (closes the feedback loop in the same transaction)
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- All queries accept: FOR USER, USING PROFILE, FILTER, DIVERSITY, LIMIT
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- Filters are composable — any combination is valid
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**File Pointer:** `VISION.md:47-57`
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## Query Shapes
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**Feed retrieval:**
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```
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RETRIEVE items
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FOR USER @user_id
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CONTEXT feed
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USING PROFILE for_you
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FILTER unseen, unblocked, format:video
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DIVERSITY max_per_creator:2, format_mix:true
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LIMIT 50
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```
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**Search:**
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```
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SEARCH items
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QUERY "rust tutorial beginner"
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VECTOR query_vector
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FOR USER @user_id
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USING PROFILE search
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DIVERSITY max_per_creator:2
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LIMIT 20
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```
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**Signal write:**
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```
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SIGNAL like
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item: @item_id
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user: @user_id
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timestamp: now()
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```
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**Related content:**
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```
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RETRIEVE items
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SIMILAR TO @item_id
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FOR USER @user_id
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USING PROFILE related
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FILTER unseen
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LIMIT 10
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```
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## Related Topics
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- [Ranking Profiles](../services/ranking-profiles.md)
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- [Filters](./filters.md)
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- [Sort Modes](./sort-modes.md)
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