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Neo4j

What is Neo4j?

Neo4j is a graph database. Instead of tables and rows, it stores data as nodes and the relationships between them, treating those connections as first-class citizens you can query directly. You write queries in Cypher, a language designed to read almost like a sentence describing the pattern you want to find.

This matters when the connections are the point. In a relational database, asking "which friends of my friends also bought this product" means joining tables together over and over, and performance falls apart as the chains get longer. Neo4j walks the relationships natively, so a query that traverses six degrees of connection stays fast. Recommendation engines, fraud detection, and social networks all lean on this. A bank spotting a ring of accounts moving money in a suspicious loop is a problem graphs solve far more naturally than rows and columns.

The trade-off is focus. Neo4j is excellent at connected data and overkill for simple, flat records where a relational database or a document store would do the job with less overhead. The question is rarely whether Neo4j is good. It is whether your data is shaped like a graph.

Neo4j at Dallonses

We reach for Neo4j when a project lives and dies on relationships. Recommendation logic, permission hierarchies, anything where the value sits in how things connect rather than the things themselves. It is a specialist tool, and we treat it like one.

The honest part of this work is the modeling. Designing a good graph means thinking hard about what counts as a node and what counts as a relationship, and getting that wrong early is expensive to undo. We work through that with clients before committing, because a graph database is a strong choice for the right problem and a heavy one for the wrong fit. When the data is genuinely connected, Cypher turns queries that would be painful in SQL into something readable and quick.

Sitting on data where the relationships are the real value? Let's map it.

Talk to us about graph data

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Close-up of an open computer with circuit board and components on a wooden desk
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Hand-drawn illustration of an open hand waving
Aymón holding a Tools magazine in front of their facem
Ari working on a laptop outdoors surrounded by plants
Top-down view of a wooden desk with a keyboard, mouse, and headphones
Hand-drawn illustration of a hand snapping fingers
Nico leaning against a water cooler next to a fire extinguishe
Close-up of an open computer with circuit board and components on a wooden desk
Bernat and Andreu collaborating at a desk with monitors and a laptop
Hand-drawn illustration of an open hand waving