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  1. Hi, Thank you for evaluating STSdb 4.0. ...

    Hi,

    Thank you for evaluating STSdb 4.0.

    About your questions.

    First, according to the STSdb 4.0 Developer's Guide, the database supports the following types:


    For keys:
  2. When we execute read operations in WaterfallTree...

    When we execute read operations in WaterfallTree the records gradually moves from the internal nodes to the leaves. All changes in the W-tree nodes are copy on write. So if we want to keep the...
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    Sticky: STSdb 4.0.8 has been released

    STSdb 4.0.8, a new version of the .NET database has been released.

    Release updates:

    changed: SortedSetExtensions now generates the same expressions for .NET and Mono. (thanks to corminlu from...
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    Sticky: STSdb 4.0.7 has been released

    STSdb 4.0.7, a new version of the .NET database has been released.

    Release updates:

    bug fixed: SortedSetExtension.ConstructFromSortedArray finally works under Mono

    Even after the bug fix,...
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    The W-Tree depth varies between two ranges: ...

    The W-Tree depth varies between two ranges:


    public int GetMinimumlWTreeDepth(long recordCount)
    {
    int b = INTERNAL_NODE_MAX_BRANCHES;
    int R =...
  6. Thank you. The filename issue has been fixed in...

    Thank you. The filename issue has been fixed in the svn repository. The .rar file with 4.0.6 sources has been uploaded again.
  7. Yes, you can use XFile to store large data. We...

    Yes, you can use XFile to store large data.

    We can work with XFile as we work with any standard .NET stream. Except one difference: the XFile is a sparse file - we can write to it and read from it...
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    Try the new version - STSdb 4.0.6...

    Try the new version - STSdb 4.0.6.
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    Sticky: STSdb 4.0.6 has been released

    STSdb 4.0.6, a new version of the .NET database has been released.

    Release updates:

    bug fixed: Persist<T> and DataPersist<T> do not work with AllowNull.All flag. This bug does not affect the...
  10. Try to fix this with KnowledgeBase 2748645...

    Try to fix this with KnowledgeBase 2748645. The issue is also described here.
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    Sticky: STSdb 4.0.5 has been released

    STSdb 4.0.5, a new version of the .NET database has been released.

    Release updates:


    bug fixed: GetDigits() method.


    Download:
  12. The above code example works fine with 4.0.4.

    The above code example works fine with 4.0.4.
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    Sticky: STSdb 4.0.4 has been released

    STSdb 4.0.4, a new version of the .NET database has been released.

    Release updates:


    incompatible change: Persist<T> and DataPersist<T> serialization logic is changed for structures, GUID and...
  14. For the issue: 1. What are the storage engine...

    For the issue:

    1. What are the storage engine memory settings?

    INTERNAL_NODE_MIN_BRANCHES
    INTERNAL_NODE_MAX_BRANCHES
    INTERNAL_NODE_MAX_OPERATIONS_IN_ROOT
    INTERNAL_NODE_MIN_OPERATIONS
    ...
  15. Sorry for late answer - for some reason the forum...

    Sorry for late answer - for some reason the forum system await approval from us of your posts... We will disable this.

    Feel free to post your questions on the forum.

    Thank you.
  16. We follow the roadmap philosophy. At this stage...

    We follow the roadmap philosophy. At this stage of development we can't share details.
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    Thank you for your research.

    Thank you for your research.
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    Yes, probably, we have to decrease the default...

    Yes, probably, we have to decrease the default memory settings in the future versions. At least with a little...

    Thank you for your investigations.

    EDIT: You can check also...
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    const int COUNT = 100000000; ...

    const int COUNT = 100000000;
    File.Delete("test.stsdb4");

    using (IStorageEngine engine = STSdb.FromFile("test.stsdb4"))
    {
    StorageEngine e =...
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    In general, the storage engine commit does the...

    In general, the storage engine commit does the following things:
    Stores modified W-tree nodes (without excluding them from cache).
    Flushes all scheme changes
    Stores the W-tree root
    Invokes...
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    Read with commit and without commit can increase...

    Read with commit and without commit can increase the database size. This is because querying for some key in W-tree may cause pouring down of group of records from some node to its children, in order...
  22. Yes, we have plans to improve the Commit()...

    Yes, we have plans to improve the Commit() method, but this will be for the next major release.

    Meanwhile, you can try to decrease the number of records in the W-tree root node. (The root node is...
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    We released STSdb 4.0.3 with fixed memory usage...

    We released STSdb 4.0.3 with fixed memory usage issue. Thanks.
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    Sticky: STSdb 4.0.3 has been released

    STSdb 4.0.3, a new version of the .NET database has been released.

    Release updates:

    bug fixed: memory usage issue (thanks: NaimingYao & mafshin) The W-tree leaf nodes were always being created...
  25. In case of composite keys, you can use...

    In case of composite keys, you can use table.Forward(fromKey, toKey) with preliminary defined ranges, to enumerate (and calculate) only the needed records.

    Based on your post, if we have:


    ...
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