Crate cruster 

Cruster — stateless entity framework with durable workflows.

Entities are addressable stateless RPC handlers. Workflows provide durable orchestration. State management is the application’s responsibility (use your database directly).

Modules

config

cron

Cluster cron job scheduling.

detachment

Detachment state management for shard ownership.

entity

entity_client

entity_manager

entity_reaper

entity_resource

envelope

error

hash

message

message_storage

metrics

prelude

Prelude module for convenient glob imports.

reply

resource_map

runner

runner_health

runner_storage

runners

schema

Cluster annotations for RPC definitions.

shard_assigner

Shard Assignment Strategies

sharding

sharding_impl

single_runner

Production-grade single-node cluster with durable message storage.

singleton

Singleton registration helper.

snowflake

state_guard

Activity scope for transactional activity execution.

storage

transport

types

Attribute Macros

activity_group

Re-export proc macros for activity group definition. #[activity_group] marks a struct as an activity group. #[activity_group_impl] processes the impl block. Attribute macro for activity group struct definitions.

activity_group_impl

Re-export proc macros for activity group definition. #[activity_group] marks a struct as an activity group. #[activity_group_impl] processes the impl block. Attribute macro for activity group impl blocks.

entity

Re-export proc macros for entity definition. Attribute macro for entity struct definitions.

entity_impl

Re-export proc macros for entity definition. Attribute macro for entity impl blocks.

entity_trait

Re-export deprecated entity_trait macros (emit compile errors directing to replacements). Removed. Entity traits have been replaced by #[rpc_group] / #[rpc_group_impl].

entity_trait_impl

Re-export deprecated entity_trait macros (emit compile errors directing to replacements). Removed. Entity trait impls have been replaced by #[rpc_group_impl].

rpc_group

Re-export proc macros for RPC group definition. #[rpc_group] marks a struct as an RPC group. #[rpc_group_impl] processes the impl block. Attribute macro for RPC group struct definitions.

rpc_group_impl

Re-export proc macros for RPC group definition. #[rpc_group] marks a struct as an RPC group. #[rpc_group_impl] processes the impl block. Attribute macro for RPC group impl blocks.

workflow_impl

Re-export proc macros for standalone workflow definition. #[workflow] is dual-purpose (struct-level -> standalone workflow, method-level -> marker). #[workflow_impl] is used on the workflow impl block. Attribute macro for standalone workflow impl blocks.