@lidangzzz: I told you last year that using RAG and vector databases is a dead end. The correct approach is: 1. Use memory correctly; 2. Properly chunk content, index it well, and summarize it; 3. Give the agent proper search tools...

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The author criticizes the RAG and vector database approach, proposing that the correct methods include using memory correctly, chunking and indexing, summarizing, providing search tools for agents, and using SRAM-only inference services such as Groq and Cerebras.

I told you last year that using RAG and vector databases is a dead end. The correct approach is: 1. Use memory correctly; 2. Properly chunk content, index it well, and summarize it; 3. Give the agent proper search tools, allowing the agent or even multiple agents to perform fuzzy search themselves; 4. Use faster SRAM-only inference model providers, which I have recommended dozens of times, such as Groq, Cerebras, etc. Every one of these methods is more than ten thousand times better than blindly chunking, blindly feeding into vector databases, and blindly relying on RAG.
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Cached at: 07/04/26, 02:47 PM

I told you last year that using RAG and vector databases is a dead end. The right approach is:

  1. Use memory correctly;
  2. Properly chunk content, index it well, and do good summarization;
  3. Give agents search tools, and let the agent or even multi-agent perform fuzzy search on its own;
  4. Use faster, SRAM-only inference model providers I’ve recommended dozens of times, like Groq, Cerebras, and others.

Any of these is orders of magnitude better than blindly chunking, blindly feeding into a vector database, and blindly doing RAG.

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The author shares a learning roadmap for RAG and memory systems geared toward Agent development and interviews, covering chunking, hybrid retrieval, reranking, vector database selection, and short-term/long-term memory management, along with reference materials including the original RAG paper by Lewis et al.

we used a file index instead of a vector database for agent retrieval. here's the tradeoff.

Reddit r/AI_Agents

作者分享用 INDEX.md 文件索引替代向量数据库做 agent 文档检索的实践:由 summarizer 生成每行描述,doc-searcher 子代理挑选并读取文件,把中间读取隔离在子代理上下文中。作者指出这节省的是上下文而非总 token,小规模文档集可行,但上千文档时索引本身会变重。

@ando_w: https://x.com/ando_w/status/2075468963098546520

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