> For the complete documentation index, see [llms.txt](https://docs.arcology.network/arcology-concurrent-programming-guide/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.arcology.network/arcology-concurrent-programming-guide/data-structure.md).

# data structure

- [Cumulative Integer](https://docs.arcology.network/arcology-concurrent-programming-guide/data-structure/cumulative-integer.md): Concurrent Delta Friendly Data Types
- [Arrays](https://docs.arcology.network/arcology-concurrent-programming-guide/data-structure/arrays.md): Arrays for Concurrent Operations
- [Ordered Maps](https://docs.arcology.network/arcology-concurrent-programming-guide/data-structure/ordered-maps.md): Arcology Hash Maps
- [Behind the Scenes](https://docs.arcology.network/arcology-concurrent-programming-guide/data-structure/behind-the-scenes.md): Foundation of All Concurrency Data Structures