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/ Tag / 5 of 69
Retrieval
Every essay tagged Retrieval, newest first.
All
69
Production
51
AI Agents
40
Reliability
32
LLM
22
Cost
14
Context Engineering
11
Evals
10
Observability
9
September 2026
2 essays / No. 43 to 52
No. 52 /
26 Sept
/ 11 min
Your Agent's Memory Is Full and Most of It Is Junk
You gave your agent persistent memory and it worked.
No. 43 /
12 Sept
/ 11 min
You Upgraded Your Embedding Model and Silently Broke Retrieval
Swapping the embedding model behind your RAG looks like a one-line config change.
August 2026
1 essay / No. 24 to 24
No. 24 /
12 Aug
/ 11 min
Your Agent Has 200 Tools and Picks the Wrong One
Connect enough MCP servers and your agent carries hundreds of tool definitions into every turn.
July 2026
2 essays / No. 04 to 07
No. 7 /
20 Jul
/ 10 min
Your Agent Forgets You the Second You Close the Tab
LLMs are stateless, so every new session starts from zero.
No. 4 /
17 Jul
/ 10 min
Your RAG Is Not Broken, Your Retrieval Is
When a RAG system gives a wrong answer, the model is usually not the problem.