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Add vector-stores module: one dataset through VectorStore on pgvector, Redis, Qdrant and Elasticsearch

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Co-Authored-By: Claude Sonnet 5.5 <[email protected]>
Claude-Session: https://claude.ai/code/session_01JXVi2GMQ7bR5EmbUFdDj7N
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asmhatre
2026-10-09 06:05:26 +00:00
committed by Claude
co-authored by Claude Sonnet 5.5
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@@ -14,5 +14,6 @@ Runnable companion code for the Spring AI articles on [ankurm.com](https://ankur
| [`ollama-local/`](ollama-local) | Chat and embeddings against a real local `qwen2.5:0.5b`/`all-minilm`, no API key, driven by a Testcontainers-managed Ollama container started from a baked image; a confirmed model unload via `keep_alive: 0` and `/api/ps`, not a scripted model anywhere. Spring Boot 4.1.1, Spring AI 2.0.1, Testcontainers 2.0.5, Java 25. | [Run LLMs Locally with Spring AI and Ollama](https://ankurm.com/spring-ai-2-0-ollama-local/) |
| [`chat-memory/`](chat-memory) | `MessageChatMemoryAdvisor`, `MessageWindowChatMemory`, the JDBC and Redis `ChatMemoryRepository`, per-user conversation IDs and a token-budget memory of our own, with the traps reproduced against a real PostgreSQL 16 and Redis Stack: a 36-character `conversation_id`, tool messages dropped on save, concurrent writers, a 1.x table under the 2.0 repository, and a Redis repository that silently steps aside for a custom `ChatMemory`. Spring Boot 4.1.1, Spring AI 2.0.1, Java 25. | [Chat Memory in Spring AI 2.0: JDBC, Redis and Windowed Conversations](https://ankurm.com/spring-ai-2-0-chat-memory-jdbc-redis-windowed-conversations/) |
| [`advisors/`](advisors) | Three custom advisors -- a logger, a PII redactor (with a stream-safe restore) and a per-request / per-user token budget -- and tests for how the chain is ordered, what `BaseAdvisor` does on a stream, where an advisor sits relative to memory and the tool loop, and what a refusal looks like on a call, a stream and over HTTP (429). A recording stub model, no live model. Spring Boot 4.1.1, Spring AI 2.0.1, Java 25. | [Writing Custom Advisors in Spring AI 2.0: Logging, PII Redaction and Token Budgets](https://ankurm.com/spring-ai-2-0-custom-advisors-logging-pii-redaction-token-budgets/) |
| [`vector-stores/`](vector-stores) | The same 30,000-document dataset behind `VectorStore` on pgvector, Redis, Qdrant and Elasticsearch: ingest time, recall@10, latency, metadata filtering and running cost, with the defaults that cost recall reproduced (Elasticsearch's quantised mapping, Redis `EF_RUNTIME`, pgvector post-filtering, Qdrant payload indexes). Spring Boot 4.1.1, Spring AI 2.0.1, Java 25. | [Choosing a Vector Store for Spring AI](https://ankurm.com/spring-ai-2-0-vector-store-comparison-pgvector-redis-qdrant-elasticsearch/) |
Upgrading from Spring AI 1.x: [migration guide](https://ankurm.com/spring-ai-1-to-2-migration-guide/).