> For the complete documentation index, see [llms.txt](https://dev.teaproject.org/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://dev.teaproject.org/z_glossary/state_machine_replica.md).

# State Machine Replica

[The state machine](https://github.com/tearust/t-rust/blob/master/docs/_gitbook-dev-docs/z_glossary/state_machine.md) is the database tier that contains multiple replications. Every replication is a **State Machine Replica**.

Every replica is a standalone state machine CML node. It syncs with the other state machine CML nodes.

Our [Proof\_of\_Time](/z_glossary/consensus.md#proof-of-time) algorithm guarantees that all state machine replicas run all transactions (or any called commands) at the same sequence. As a result, the same state will be kept among all replicas.