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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Spring Terminology
When we start the Spring Framework, we start listening terms like Beans, Autowiring, Dependency Injection, IoC Factory, Inversion of Control, Application Context, etc. Before the go in full with Spring we need to understand them before.
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Bubble sort
The Bubble sort is the simplest algorithm to sort arrays. The goal is to sort a list of elements in the order that we need, comparing a pair of adjacent elements and perform a swap of these elements if they are…
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Swap with Auxiliary Variable
The technique is a common approach used in programming to swap the positions of two values. It involves the use of a temporary variable as an intermediate storage space
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Programming Squirrel 