Complex tech,
explained
simply.
Like finding the right nut in the right tree.
Hi, I’m Cesar “Aran” Pasillas — software engineer, AI builder, and your bushy-tailed guide through Java, LLMs, microservices, and modern engineering.
No jargon forests. Just clear paths and well-hidden nuts of knowledge.
Aran DataNut
Chief Nut Architect
“Every complex system has a simpler version hiding inside it. My job is to find it — like a nut under the snow.”
- RAG Pipelines
- Java Spring
- LLM Orchestration
- Microservices
- Whisper AI
- Vector Stores
Every post, same
friendly formula
Aran breaks down each concept the same way — so you always know what to expect and always walk away with the nut.
chunks = vector_store.search(
query=“user question”, top_k=5
)
Aran DataNut
Chief Nut Architect
“Think of a RAG pipeline like my winter stash — I don’t memorize every nut’s location. I just remember which tree to check.”
- RAG Pipelines
- LLM Routing
- Vector Stores
Aran’s Nutshell
Today’s Nut
What you take home today
“Don’t memorize the whole forest. Just know which tree to check. That’s RAG in one sentence.”
- RAG = map, not memory
- Embeddings = coordinates
Latest posts
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Installing Python
If you’re coming from Java and want to learn Python, start here! First, make sure you have Python installed—it’s super easy, just follow the Beginner’s Guide online. You’ll get Python IDLE to start coding and the Python Launcher to manage versions.…
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GO and the OOP
Go and OOP Go is not designed as a purely object-oriented programming (OOP) language in the traditional sense, like Java. However, Go includes certain features that allow for the use of OOP principles, but in a simplified and more flexible manner.
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Download and Installation Go
So, if you are is because you want to learn GO, and is possible that you comes from a Java platform, if not I recommend you to learn java.
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Programming Squirrel 