Oct 28, 2026 · Backend Development

From Code Context to 100B Docs: Qoder's Production Vector Retrieval with Elasticsearch

Alibaba's Qoder team details how they built a production-grade vector retrieval system for Agentic Coding using Alibaba Cloud Elasticsearch, handling 100B+ documents with per-codebase slices for multi-tenant isolation, achieving 14ms P95 latency, 2GB/s write throughput, and ~0.016 yuan monthly cost per codebase, while sharing indexing, query pipeline, observability, and future unified retrieval plans.

Agentic CodingAlibaba Cloud ElasticsearchCost Optimization

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From Code Context to 100B Docs: Qoder's Production Vector Retrieval with Elasticsearch