Depth-First Search (DFS)
Definition
Depth-first search pursues a possible path as far as possible before exploring other paths.
A graph search method that follows a path as deeply as possible and only then returns to alternatives.
Simply explained
Like exploring a branching path: You first go down one branch to the end and then return to check the next one.
Why it matters in practice
The term contributes to secure, maintainable, and high-performance web applications as well as resilient technical decisions.
Example from business
A configuration checker searches dependencies and marks cycles with visitation states.
Limits and pitfalls
- Without visitation marking, loops may occur; DFS does not necessarily find the shortest path in unweighted graphs.
Origin & history
DFS is one of the fundamental traversal methods in theoretical computer science and algorithms.
Use in mid-sized companies
- Possible example: A configuration checker searches dependencies and marks cycles with visitation states.
Frequently asked questions
What does depth-first search (DFS) mean?
A graph search method that follows a path as deeply as possible and only then returns to alternatives. What should you watch out for? Without visitation marking, loops may occur; DFS does not necessarily find the shortest path in unweighted graphs.
Sources
- depth-first search · NIST DADS, depth-first search
Source checked on 10.10.2026. Editorial application examples are hypothetical; no evidence of real customer results.
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