Interface IMaintainer

The maintainer for ZoneTree to control merge operations and memory compaction.

Inherited Members
Namespace: Tenray.ZoneTree
Assembly: ZoneTree.dll
Syntax
public interface IMaintainer : IDisposable
Remarks

You must complete or cancel all pending tasks of this maintainer before disposing.

Properties

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DiskSegmentBufferLifeTime

Sets or gets Disk Segment block cache life time in milliseconds. Default value is 10_000 milliseconds.

Declaration
long DiskSegmentBufferLifeTime { get; set; }
Property Value
Type Description
long
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EnableJobForCleaningInactiveCaches

Gets or sets a value indicating whether a periodic timer is enabled to release unused block and key/value record caches in the disk segment. Changing this property will start or stop the periodic timer accordingly. The default value is false.

Declaration
bool EnableJobForCleaningInactiveCaches { get; set; }
Property Value
Type Description
bool
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InactiveBlockCacheCleanupInterval

Gets or sets the interval for the periodic timer that triggers the cleanup job. The default value is 5 seconds.

Declaration
TimeSpan InactiveBlockCacheCleanupInterval { get; set; }
Property Value
Type Description
TimeSpan
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MaximumReadOnlySegmentCount

Starts merge operation when read-only segments count exceeds this value. Default value is 64.

Declaration
int MaximumReadOnlySegmentCount { get; set; }
Property Value
Type Description
int
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MinimumSparseArrayLength

Minimum sparse array length when a new disk segment is created. Default value is 0.

Declaration
int MinimumSparseArrayLength { get; set; }
Property Value
Type Description
int
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SparseArrayStepLength

Configures sparse array step length when the disk segment length is bigger than MinimumSparseArrayLength * SparseArrayStepLength. The default value is 1000. The sparse array length reduce binary lookup range on disk segment to reduce IO.

Declaration
int SparseArrayStepLength { get; set; }
Property Value
Type Description
int
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ThresholdForMergeOperationStart

Starts merge operation when records count in read-only segments exceeds this value. Default value is 0.

Declaration
int ThresholdForMergeOperationStart { get; set; }
Property Value
Type Description
int

Methods

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WaitForBackgroundThreads()

Waits until all running tasks are completed.

Declaration
void WaitForBackgroundThreads()
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TryCancelBackgroundThreads()

Tries cancel running tasks.

Declaration
void TryCancelBackgroundThreads()