Queue Engine

Group "Queue Engine"

This group defines the queue-handling settings of Orchestra.

Parameter	Description
Delay	Base delay time before a work item is re-executed.
Delay Unit	Time unit for the delay. Allowed values: MILLISECOND, SECOND, MINUTE, HOUR, DAY.
Max Retry	Maximum number of retries before Orchestra stops re-executing a work item.
Max Delay	Maximum time span of a delayed execution. If the computed delay exceeds this value, maxDelay is used instead. A value of -1 disables this limit.
Max Delay Unit	Time unit for maxDelay. Allowed values: MILLISECOND, SECOND, MINUTE, HOUR, DAY.
ESB Cell Delay	Base delay for re-execution of ESB cell work items.
ESB Cell Delay Unit	Time unit for ESB Cell Delay.
ESB Cell Max Delay	Maximum delay span for ESB cell work items. If exceeded, maxDelay is used instead. A value of -1 disables this limit.
ESB Cell Max Delay Unit	Time unit for ESB Cell Max Delay.
ESB Cell Max Retry	Maximum number of retries before Orchestra stops re-executing an ESB cell work item.
Warn Level Ext. Communication	Defines how communication errors of a channel are logged by the event engine: - WARNING: Logged as system events of category WARNING. - ERROR: Logged as system events of category ERROR. - NONE: No logging of communication errors.
Persistent Pool Direct Execution Limit	Percentage of worker threads allowed to execute work items in cooperative mode. A value of 0 disables this feature.
Persistent Pool Threads	Maximum number of worker threads that serve persistent work items.
Persistent Pool Polling Time	Interval (ms) in which queues are checked when Orchestra is idle. Provides a safety fallback in addition to automatic thread pool notifications.
Persistent Queue Default Parallel Delivery	Maximum number of work items delivered in parallel for execution.
Topic Pool Async Load	Number of worker threads used to load signals asynchronously in cluster mode.
Topic Pool Direct Execution Limit	Percentage of worker threads allowed to execute work items in cooperative mode. A value of 0 disables this feature.
Topic Pool Polling Time	Interval (ms) in which topic queues are checked when Orchestra is idle. Provides a safety fallback in addition to automatic notifications.
Topic Pool Threads	Number of worker threads that serve volatile work items.
Signal Lifetime	Maximum lifetime of a signal (in minutes). Expired signals are not delivered.
Volatile Pool Direct Execution Limit	Percentage of worker threads allowed to execute work items in cooperative mode. A value of 0 disables this feature.
Volatile Pool Threads	Maximum number of worker threads that serve volatile work items.
Volatile Queue Default Parallel Delivery	Maximum number of volatile work items delivered in parallel for execution.
Volatile Pool Polling Time	Interval (ms) in which volatile queues are checked when Orchestra is idle. Provides a safety fallback in addition to automatic notifications.
Volatile Topics Enqueue Time	Maximum blocking time (ms) for inserting an item into the queue. An exception is thrown if no space is available after this time. A value of 0 blocks indefinitely.
Volatile Topics Max Item	Maximum number of items in the volatile queue. External events are blocked when this limit is reached.