> For the complete documentation index, see [llms.txt](https://www.ngxs.io/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://www.ngxs.io/v3.2/advanced.md).

# Advanced

- [Lazy Loading](https://www.ngxs.io/v3.2/advanced/lazy.md)
- [Sub States](https://www.ngxs.io/v3.2/advanced/sub-states.md)
- [Cancellation](https://www.ngxs.io/v3.2/advanced/cancellation.md)
- [Action Handlers](https://www.ngxs.io/v3.2/advanced/action-handlers.md)
- [Composition](https://www.ngxs.io/v3.2/advanced/composition.md)
- [Error Handling](https://www.ngxs.io/v3.2/advanced/errors.md)
- [Life-cycle](https://www.ngxs.io/v3.2/advanced/life-cycle.md)
- [Meta Reducers](https://www.ngxs.io/v3.2/advanced/meta-reducer.md)
- [Shared State](https://www.ngxs.io/v3.2/advanced/shared-state.md)