# YAFS: A simulator for IoT scenarios in fog computing

## TL;DR

YAFS is a flexible fog computing simulator that models complex network relationships and supports dynamic application deployment, failures, and mobility, enabling advanced analysis of IoT scenarios.

## Contribution

It introduces a novel simulator capable of modeling dynamic and complex IoT fog environments with features not available in existing tools.

## Key findings

- YAFS effectively models dynamic application module allocation.
- It accurately simulates network node failures and user mobility.
- The simulator shows comparable efficiency to iFogSim.

## Abstract

We propose a fog computing simulator for analysing the design and deployment of applications through customized and dynamical strategies. We model the relationships among deployed applications, network connections and infrastructure characteristics through complex network theory, enabling the integration of topological measures in dynamic and customizable strategies such as the placement of application modules, workload location, and path routing and scheduling of services. We present a comparative analysis of the efficiency and the convergence of results of our simulator with the most referenced entity, iFogSim. To highlight YAFS functionalities, we model three scenarios that, to the best of our knowledge, cannot be implemented with current fog simulators: dynamic allocation of new application modules, dynamic failures of network nodes and user mobility along the topology.