Expose default values.

src/ZoneTree/Directory.Build.props

@@ -5,8 +5,8 @@
     <Authors>Ahmed Yasin Koculu</Authors>
     <PackageId>ZoneTree</PackageId>
     <Title>ZoneTree</Title>
-    <ProductVersion>1.8.4.0</ProductVersion>
-    <Version>1.8.4.0</Version>
+    <ProductVersion>1.8.5.0</ProductVersion>
+    <Version>1.8.5.0</Version>
     <Authors>Ahmed Yasin Koculu</Authors>
     <AssemblyTitle>ZoneTree</AssemblyTitle>
     <Description>ZoneTree is a persistent, high-performance, transactional, ACID-compliant ordered key-value database for NET. It can operate in memory or on local/cloud storage.</Description>

src/ZoneTree/Options/DefaultValues.cs

@@ -0,0 +1,17 @@
+using System.Collections.ObjectModel;
+using Tenray.ZoneTree.Collections.BTree.Lock;
+
+namespace Tenray.ZoneTree.Options;
+
+public static class DefaultValues
+{
+    public static readonly int MutableSegmentMaxItemCount = 1_000_000;
+
+    public static readonly int DiskSegmentMaxItemCount = 20_000_000;
+
+    public static readonly BTreeLockMode BTreeLockMode = BTreeLockMode.NodeLevelMonitor;
+
+    public static readonly int BTreeNodeSize = 128;
+
+    public static readonly int BTreeLeafSize = 128;
+}

src/ZoneTree/Options/DiskSegmentDefaultValues.cs

@@ -0,0 +1,26 @@
+namespace Tenray.ZoneTree.Options;
+
+public static class DiskSegmentDefaultValues
+{
+    public static readonly DiskSegmentMode DiskSegmentMode = DiskSegmentMode.MultiPartDiskSegment;
+
+    public static readonly int CompressionBlockSize = 4 * 1024 * 1024;
+
+    public static readonly CompressionMethod CompressionMethod = CompressionMethod.LZ4;
+
+    public static readonly int CompressionLevel = CompressionLevels.LZ4Fastest;
+
+    public static readonly int MaximumRecordCount = 3_000_000;
+
+    public static readonly int MinimumRecordCount = 1_500_000;
+
+    public static readonly int KeyCacheSize = 1024;
+
+    public static readonly int ValueCacheSize = 1024;
+
+    public static readonly int KeyCacheRecordLifeTimeInMillisecond = 1024;
+
+    public static readonly int ValueCacheRecordLifeTimeInMillisecond = 10_000;
+
+    public static readonly int DefaultSparseArrayStepSize = 1024;
+}

src/ZoneTree/Options/DiskSegmentOptions.cs

@@ -10,71 +10,71 @@ public sealed class DiskSegmentOptions
     /// Default value is <see cref="DiskSegmentMode.MultiPartDiskSegment"/>.
     /// </summary>
     public DiskSegmentMode DiskSegmentMode { get; set; }
-        = DiskSegmentMode.MultiPartDiskSegment;
+        = DiskSegmentDefaultValues.DiskSegmentMode;
 
     /// <summary>
     /// Gets or sets the block size for disk segment compression, in bytes.
     /// Default value is 4 MB (4 * 1024 * 1024 bytes).
     /// </summary>
-    public int CompressionBlockSize { get; set; } = 4 * 1024 * 1024;
+    public int CompressionBlockSize { get; set; } = DiskSegmentDefaultValues.CompressionBlockSize;
 
     /// <summary>
     /// Gets or sets the compression method used if compression is enabled.
     /// Default value is <see cref="CompressionMethod.LZ4"/>.
     /// </summary>
-    public CompressionMethod CompressionMethod { get; set; } = CompressionMethod.LZ4;
+    public CompressionMethod CompressionMethod { get; set; } = DiskSegmentDefaultValues.CompressionMethod;
 
     /// <summary>
     /// Gets or sets the compression level for the selected compression method.
     /// Default value is <see cref="CompressionLevels.LZ4Fastest"/>.
     /// </summary>
-    public int CompressionLevel { get; set; } = CompressionLevels.LZ4Fastest;
+    public int CompressionLevel { get; set; } = DiskSegmentDefaultValues.CompressionLevel;
 
     /// <summary>
     /// Gets or sets the maximum number of records allowed in a disk segment when 
     /// <see cref="DiskSegmentMode.MultiPartDiskSegment"/> is enabled.
     /// Default value is 3M records.
     /// </summary>
-    public int MaximumRecordCount { get; set; } = 3_000_000;
+    public int MaximumRecordCount { get; set; } = DiskSegmentDefaultValues.MaximumRecordCount;
 
     /// <summary>
     /// Gets or sets the minimum number of records required in a disk segment when
     /// <see cref="DiskSegmentMode.MultiPartDiskSegment"/> is enabled, unless there
     /// are not enough records.
     /// Default value is 1.5M records.
     /// </summary>
-    public int MinimumRecordCount { get; set; } = 1_500_000;
+    public int MinimumRecordCount { get; set; } = DiskSegmentDefaultValues.MinimumRecordCount;
 
     /// <summary>
     /// Gets or sets the size of the circular buffer cache for keys.
     /// This cache is checked before accessing the block cache during lookups and searches.
     /// Default value is 1024.
     /// </summary>
-    public int KeyCacheSize { get; set; } = 1024;
+    public int KeyCacheSize { get; set; } = DiskSegmentDefaultValues.KeyCacheSize;
 
     /// <summary>
     /// Gets or sets the size of the circular buffer cache for values.
     /// This cache is checked before accessing the block cache during lookups and searches.
     /// Default value is 1024.
     /// </summary>
-    public int ValueCacheSize { get; set; } = 1024;
+    public int ValueCacheSize { get; set; } = DiskSegmentDefaultValues.ValueCacheSize;
 
     /// <summary>
     /// Gets or sets the maximum lifetime of a record in the key cache, in milliseconds.
     /// Default value is 10,000 milliseconds (10 seconds).
     /// </summary>
-    public int KeyCacheRecordLifeTimeInMillisecond { get; set; } = 10_000;
+    public int KeyCacheRecordLifeTimeInMillisecond { get; set; } = DiskSegmentDefaultValues.KeyCacheRecordLifeTimeInMillisecond;
 
     /// <summary>
     /// Gets or sets the maximum lifetime of a record in the value cache, in milliseconds.
     /// Default value is 10,000 milliseconds (10 seconds).
     /// </summary>
-    public int ValueCacheRecordLifeTimeInMillisecond { get; set; } = 10_000;
+    public int ValueCacheRecordLifeTimeInMillisecond { get; set; } = DiskSegmentDefaultValues.ValueCacheRecordLifeTimeInMillisecond;
 
     /// <summary>
     /// Gets or sets the default step size for the default sparse array of disk segments.
     /// Setting the step size to zero disables loading and creating the default sparse array.
     /// Default value is 1024.
     /// </summary>
-    public int DefaultSparseArrayStepSize { get; set; } = 1024;
+    public int DefaultSparseArrayStepSize { get; set; } = DiskSegmentDefaultValues.DefaultSparseArrayStepSize;
 }

src/ZoneTree/Options/WriteAheadLogDefaultValues.cs

@@ -0,0 +1,18 @@
+namespace Tenray.ZoneTree.Options;
+
+public static class WriteAheadLogDefaultValues
+{
+    public static readonly WriteAheadLogMode WriteAheadLogMode = WriteAheadLogMode.AsyncCompressed;
+
+    public static readonly int CompressionBlockSize = 1024 * 32 * 8;
+
+    public static readonly CompressionMethod CompressionMethod = CompressionMethod.LZ4;
+
+    public static readonly int CompressionLevel = CompressionLevels.LZ4Fastest;
+
+    public static readonly bool SyncCompressedModeEnableTailWriterJob = true;
+
+    public static readonly int SyncCompressedModeTailWriterJobInterval = 500;
+
+    public static readonly int AsyncCompressedModeEmptyQueuePollInterval = 100;
+}

src/ZoneTree/Options/WriteAheadLogMode.cs

@@ -8,7 +8,7 @@ public enum WriteAheadLogMode : byte
     /// <summary>
     /// Sync mode write ahead log ensures that the data is flushed to the device
     /// immediately.
-    /// It provides maximum durability in case of a crash/power cut,
+    /// It provides maximum durability in case of a crash,
     /// but slower write speed.
     /// </summary>
     Sync = 0,

src/ZoneTree/Options/WriteAheadLogOptions.cs

@@ -14,7 +14,7 @@ public sealed class WriteAheadLogOptions
     /// based on this setting. Default value is AsyncCompressed.
     /// </summary>
     public WriteAheadLogMode WriteAheadLogMode { get; set; }
-        = WriteAheadLogMode.AsyncCompressed;
+        = WriteAheadLogDefaultValues.WriteAheadLogMode;
 
     /// <summary>
     /// The custom options are reserved to be used
@@ -27,19 +27,19 @@ public sealed class WriteAheadLogOptions
     /// based on this setting. Default value = 256 KB
     /// </summary>
     public int CompressionBlockSize { get; set; }
-        = 1024 * 32 * 8;
+        = WriteAheadLogDefaultValues.CompressionBlockSize;
 
     /// <summary>
     /// The compression method for the WALs with compression enabled.
     /// Default is LZ4.
     /// </summary>
-    public CompressionMethod CompressionMethod { get; set; } = CompressionMethod.LZ4;
+    public CompressionMethod CompressionMethod { get; set; } = WriteAheadLogDefaultValues.CompressionMethod;
 
     /// <summary>
     /// The compression level of the selected compression method.
     /// Default is <see cref="CompressionLevels.LZ4Fastest"/>.
     /// </summary>
-    public int CompressionLevel { get; set; } = CompressionLevels.LZ4Fastest;
+    public int CompressionLevel { get; set; } = WriteAheadLogDefaultValues.CompressionLevel;
 
     /// <summary>
     /// Options for sync-compressed mode.

src/ZoneTree/Options/ZoneTreeOptions.cs

@@ -39,14 +39,14 @@ public sealed class ZoneTreeOptions<TKey, TValue>
     /// MoveMutableSegmentForward is called and current mutable segment is enqueued to
     /// the ReadOnlySegments layer.
     /// </summary>
-    public int MutableSegmentMaxItemCount { get; set; } = 1_000_000;
+    public int MutableSegmentMaxItemCount { get; set; } = DefaultValues.MutableSegmentMaxItemCount;
 
     /// <summary>
     /// Disk segment maximumum key-value pair count.
     /// When the maximum count is reached
     /// The disk segment is enqueued into to the bottom segments layer.
     /// </summary>
-    public int DiskSegmentMaxItemCount { get; set; } = 20_000_000;
+    public int DiskSegmentMaxItemCount { get; set; } = DefaultValues.DiskSegmentMaxItemCount;
 
     /// <summary>
     /// The key comparer.
@@ -92,17 +92,17 @@ public sealed class ZoneTreeOptions<TKey, TValue>
     /// Controls lock granularity of in-memory BTree that represents the
     /// mutable segment.
     /// </summary>
-    public BTreeLockMode BTreeLockMode { get; set; } = BTreeLockMode.NodeLevelMonitor;
+    public BTreeLockMode BTreeLockMode { get; set; } = DefaultValues.BTreeLockMode;
 
     /// <summary>
     /// The B+Tree node size.
     /// </summary>
-    public int BTreeNodeSize { get; set; } = 128;
+    public int BTreeNodeSize { get; set; } = DefaultValues.BTreeNodeSize;
 
     /// <summary>
     /// The B+Tree leaf size.
     /// </summary>
-    public int BTreeLeafSize { get; set; } = 128;
+    public int BTreeLeafSize { get; set; } = DefaultValues.BTreeLeafSize;
 
     /// <summary>
     /// ZoneTree Logger.

src/ZoneTree/WAL/Async/AsyncCompressedModeOptions.cs

@@ -1,4 +1,6 @@
-namespace Tenray.ZoneTree.WAL;
+using Tenray.ZoneTree.Options;
+
+namespace Tenray.ZoneTree.WAL;
 
 public sealed class AsyncCompressedModeOptions
 {
@@ -7,5 +9,5 @@ public sealed class AsyncCompressedModeOptions
     /// to retrieve the new entries in the queue,
     /// when the queue is empty.
     /// </summary>
-    public int EmptyQueuePollInterval { get; set; } = 100;
+    public int EmptyQueuePollInterval { get; set; } = WriteAheadLogDefaultValues.AsyncCompressedModeEmptyQueuePollInterval;
 }

src/ZoneTree/WAL/SyncCompressed/SyncCompressedModeOptions.cs

@@ -1,4 +1,6 @@
-namespace Tenray.ZoneTree.WAL;
+using Tenray.ZoneTree.Options;
+
+namespace Tenray.ZoneTree.WAL;
 
 public sealed class SyncCompressedModeOptions
 {
@@ -9,11 +11,11 @@ public sealed class SyncCompressedModeOptions
     /// This improves durability in compressed WALs.
     /// Default value is true.
     /// </summary>
-    public bool EnableTailWriterJob { get; set; } = true;
+    public bool EnableTailWriterJob { get; set; } = WriteAheadLogDefaultValues.SyncCompressedModeEnableTailWriterJob;
 
     /// <summary>
     /// The delay in milliseconds before the next tail write.
     /// Default value is 500 ms.
     /// </summary>
-    public int TailWriterJobInterval { get; set; } = 500;
+    public int TailWriterJobInterval { get; set; } = WriteAheadLogDefaultValues.SyncCompressedModeTailWriterJobInterval;
 }