marketplace-search-recsys-planning
Marketplace Engineering Two-Sided Search and Recsys Planning Best Practices
Comprehensive planning, design and diagnostic guide for search and recommendation systems in two-sided trust marketplaces. Covers OpenSearch index, query and ranking patterns, the methodology for planning retrieval work, the handoff points to recommendation-specific tooling, and the instrumentation and dashboard layer that turns measurement into ongoing decision making. Contains 57 rules across 10 categories ordered by cascade impact, plus two playbooks (plan a new system from scratch, diagnose an existing one) and explicit living-artefact conventions (decisions log, golden set, gotchas).
When to Apply
Reference this skill when:
- Planning a new marketplace retrieval project from scratch
- Reviewing an existing retrieval system that feels stale, unfair, or unpersonalised
- Designing the OpenSearch index mapping, analyzers, or query DSL
- Choosing retrieval primitives per product surface (search, recs, hybrid, curated)
- Deciding which search quality metrics to track and dashboard
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