Tamaki MES Properties

This page consolidates all Spring configuration properties for Tamaki MES services.

Hibernate

Property	Default	Description
hibernate.jdbc.batch_size	50	Number of statements Hibernate will batch per roundtrip to the database. Increase to reduce network roundtrips; ensure your JDBC driver and DB support batching.

Notes

• Tuning: Start at 50–100. Validate with database metrics and profiling.
• Constraints: Consider triggers/sequences that may affect batching semantics.

Transaction

Property	Default	Description
transaction.retry.max_attempts	3	Maximum retry attempts for transient transactional failures.
transaction.retry.backoff_delay_ms	500	Backoff delay between retries (milliseconds).
transaction.retry.backoff_delay_multiplier	2	Multiplier applied to the previous delay for exponential backoff.

Notes

Effective delay sequence is backoff_delay_ms * multiplier^(attempt-1) until max attempts.

Inventory

Property	Default	Description
inventory.data_collection.execution_interval_ms	250	Interval between inventory data collection executions (milliseconds).

Notes

• Align with PLC tag update rates to avoid stale reads.

OEE

Property	Default	Description
oee.data_collection.execution_interval_ms	250	Interval between OEE data collection executions (milliseconds).
oee.data_collection.flush_check_interval_ms	10000	Frequency to check whether buffered OEE data should be flushed to the database (milliseconds).
oee.data_collection.prune_records_cron	0 0 0 * * ?	Cron expression for pruning old OEE records. Uses Spring Cron Format. The default value is Daily at Midnight.
oee.data_collection.logs.throttling.threshold	10	The maximum number of errors to show within the throttling window before suppressing them.
oee.data_collection.logs.throttling.window_ms	5000	The logs throttling window (milliseconds). Duplicate logs inside this window will be suppressed.
oee.alarms.alarm_flush_interval_ms	10000	Interval between OEE alarm flush operations (milliseconds).
oee.pruning.batch_size	1000	Number of OEE records deleted per pruning batch.
oee.pruning.batch_delay_ms	500	Delay between pruning batches to reduce DB load (milliseconds).

Notes

• Execution Interval

  • Lower → collects data more frequently, more CPU/memory use.
  • Higher → collects data less frequently, less CPU/memory use, risk of missing short-lived events.

• Flush Check Interval

  • Lower → more DB writes.
  • Higher → fewer DB writes, higher crash-loss risk.

• Flush Check Interval needs to be larger than Execution Interval

• Mismatch causes wasted flushes (too frequent) or buffer growth (too slow).

Operation

Property	Default	Description
operation.data_collection.execution_interval_ms	250	Interval between operation data collection executions (milliseconds).

Shift

Property	Default	Description
shift.data_collection.expression_schedule_evaluation_interval_ms	500	Interval for evaluating expression-based shift schedules (milliseconds).
shift.data_collection.ignition_schedule_evaluation_interval_ms	10000	Interval for evaluating Ignition-bound shift schedules (milliseconds).

Expression

Property	Default	Description
expression.health_check.min_batch_size	5	Minimum number of expressions evaluated per health check cycle.
expression.health_check.scan_interval_ms	3000	Interval between expression health check scans (milliseconds).
expression.health_check.max_log_expressions	10	Max number of expressions logged when anomalies are detected.
expression.logs.throttling.window_ms	5000	The logs throttling window (milliseconds). Duplicate logs inside this window will be suppressed.

Tracegraph

Property	Default	Description
tracegraph.max_nodes	1000	Maximum number of nodes visited during a trace to prevent runaway traversal.
tracegraph.max_depth	5	Maximum traversal depth for trace graph operations.

Additional Logging

Property	Default	Description
logs.diagnostics	true	Whether or not to enable additional diagnostic logging.