Get Statistics

Use GetCollectionStatisticsOperation to get collection stats.

// Pass an instance of class `GetCollectionStatisticsOperation` to the store 
CollectionStatistics stats =
    store.maintenance().send(new GetCollectionStatisticsOperation());

Stats are returned in the CollectionStatistics object.

public class CollectionStatistics {
// Collection stats results:
    // Total # of documents in all collections
    int CountOfDocuments;
    // Total # of conflicts
    int CountOfConflicts;
    // Total # of documents per collection
    Map<String, Long> Collections;
}

Use GetDetailedCollectionStatisticsOperation to get detailed collection stats.

// Pass an instance of class `GetDetailedCollectionStatisticsOperation` to the store 
DetailedCollectionStatistics stats =
    store.maintenance().send(new GetDetailedCollectionStatisticsOperation());

Stats are returned in the DetailedCollectionStatistics object.

// Detailed collection stats results:
public class DetailedCollectionStatistics  {
    // Total # of documents in all collections
    long CountOfDocuments;
    // Total # of conflicts
    long CountOfConflicts;
    // Collection details per collection
    Map<String, CollectionDetails> Collections;
}

// Details per collection
public class CollectionDetails {
    String Name;
    long CountOfDocuments;
    Size Size;
    Size DocumentsSize;
    Size TombstonesSize;
    Size RevisionsSize;
}

Use GetStatisticsOperation to get database stats.

// Pass an instance of class `GetStatisticsOperation` to the store 
DatabaseStatistics stats =
    store.maintenance().send(new GetStatisticsOperation());

Stats are returned in the DatabaseStatistics object.

// Database stats results:
public class DatabaseStatistics {
    Long LastDocEtag;       // Last document etag in database
    Long LastDatabaseEtag;  // Last database etag
    
    int CountOfIndexes;     // Total # of indexes in database
    long CountOfDocuments;  // Total # of documents in database
    long CountOfRevisionDocuments;  // Total # of revision documents in database
    long CountOfDocumentsConflicts; // Total # of documents conflicts in database
    long CountOfTombstones;         // Total # of tombstones in database
    long CountOfConflicts;          // Total # of conflicts in database
    long CountOfAttachments;        // Total # of attachments in database
    long CountOfUniqueAttachments;  // Total # of unique attachments in database
    long CountOfCounterEntries;     // Total # of counter-group entries in database
    long CountOfTimeSeriesSegments; // Total # of time-series segments in database

    IndexInformation[] Indexes;     // Statistics for each index in database

    String DatabaseChangeVector;    // Global change vector of the database
    String DatabaseId;              // Database identifier
    boolean Is64Bit;                // Indicates if process is 64-bit
    String Pager;                   // Component handling the memory-mapped files
    Date LastIndexingTime;          // Last time of indexing an item
    Size SizeOnDisk;                // Database size on disk
    Size TempBuffersSizeOnDisk;     // Temp buffers size on disk
    int NumberOfTransactionMergerQueueOperations;
}

Use GetDetailedStatisticsOperation to get detailed database stats.

// Pass an instance of class `GetDetailedStatisticsOperation` to the store 
DetailedDatabaseStatistics stats =
    store.maintenance().send(new GetDetailedStatisticsOperation());

Stats are returned in the DetailedDatabaseStatistics object.

// Detailed database stats results:
public class DetailedDatabaseStatistics extends DatabaseStatistics {
    // Total # of identities in database
    long CountOfIdentities;
    // Total # of compare-exchange items in database
    long CountOfCompareExchange;
    // Total # of cmpXchg tombstones in database
    long CountOfCompareExchangeTombstones;
    // Total # of TS deleted ranges values in database
    long CountOfTimeSeriesDeletedRanges;
}

• By default, you get stats for the database defined in your Document Store.
• Use forDatabase to get database & collection stats for another database.
• 'ForDatabase' can be used with any of the above stats options.

// Get stats for 'AnotherDatabase':
DatabaseStatistics stats =
    store.maintenance().forDatabase("AnotherDatabase").send(new GetStatisticsOperation());

• Learn more about switching operations to another database here.