The third MCP server was reasonable. The rest were not
MCP was the right answer for giving an agent a project's documentation. As the count grew, the servers themselves became the thing needing maintenance.
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#PostgreSQL
The PostgreSQL database: index strategies, the query planner, vacuum and performance.
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You chose RAG. The real work starts now
RAG or fine-tuning gets answered everywhere. The three questions left after it — the key, the model choice, the budget — get answered nowhere.
18,750 req/s: precise, repeated, and three times wrong
Two phases of the same run measured the same service three times apart. What caught the wrong one was not a better statistic but a second method.
Don't pick a partial index for speed
Four index strategies on a 10M-row Postgres queue table: the winner didn't win for the reason I gave, and one setting turned it into a 1,635x loss.