Hybrid Search Platform — High-Volume Search Infrastructure

I will build a production hybrid search platform — covering dual index management (sparse and dense), parallel retrieval orchestration, fusion layer, response caching, query analytics, auto-scaling, and a monitoring dashboard tracking search quality and infrastructure performance. Hybrid search at production scale requires infrastructure engineering that single-instance implementations don't — parallel retrieval from both indexes must be load-balanced, the fusion layer must handle index disagreements gracefully, and query analytics must track both search quality and infrastructure performance simultaneously.

The platform covers dual index management, parallel retrieval orchestration, fusion layer with configurable strategies, query response caching, query analytics pipeline, auto-scaling configuration, monitoring dashboard, and an operations runbook.