---
title: Storm Internal Implementation
layout: documentation
documentation: true
---
This section of the wiki is dedicated to explaining how Storm is implemented. You should have a good grasp of how to use Storm before reading these sections. 

- [Structure of the codebase](Structure-of-the-codebase.html)
- [Lifecycle of a topology](Lifecycle-of-a-topology.html)
- [Message passing implementation](Message-passing-implementation.html)
- [Metrics](Metrics.html)
- [Nimbus HA](nimbus-ha-design.html)
- [Storm SQL](storm-sql-internal.html)
