feat: live slot migration for cluster resharding - #34
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implements the core migration types and state management: - Migration struct with source/target nodes and state tracking - MigrationManager for tracking active incoming/outgoing migrations - MigrationBatch for streaming keys between nodes - MigrationRedirect for MOVED/ASK responses - MigrationConfig for tuning batch sizes and timeouts
adds protocol support for slot migration commands: - CLUSTER SETSLOT <slot> IMPORTING <node-id> - CLUSTER SETSLOT <slot> MIGRATING <node-id> - CLUSTER SETSLOT <slot> NODE <node-id> - CLUSTER SETSLOT <slot> STABLE - MIGRATE host port key db timeout [COPY] [REPLACE] handlers return cluster-disabled error in non-cluster mode
adds protocol support for cluster management: - CLUSTER MEET <ip> <port> - CLUSTER ADDSLOTS <slot> [slot...] - CLUSTER DELSLOTS <slot> [slot...] - CLUSTER FORGET <node-id> - CLUSTER REPLICATE <node-id> - CLUSTER FAILOVER [FORCE|TAKEOVER] - CLUSTER COUNTKEYSINSLOT <slot> - CLUSTER GETKEYSINSLOT <slot> <count> all handlers return cluster-disabled error in non-cluster mode
kacy
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Feb 11, 2026
feat: live slot migration for cluster resharding
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Summary
migration.rsmodule with core migration types and state managementMigrationstruct tracking source/target nodes and state transitionsMigrationManagerfor tracking active incoming/outgoing migrationsMigrationBatchfor streaming keys between nodes during migrationTested
cargo test -p ember-cluster- 56 tests passcargo test -p ember-protocol- 223 tests passcargo test- all tests passcargo clippy- no warningsDesign considerations
MigrationConfigprovides tunables for batch sizes, timeouts, and delays