1.聚合缓存RavenDb默认是缓存所有的请求url的，最大的缓存请求数默认是2048documentStore.Conventions.ShouldCacheRequest = url => true;documentStore.MaxNumberOfCachedRequests = 2048;如果开启这个选项，RavenDb直接从缓存当中读取数据，而不是从服务端。//关闭跟踪documentStore.Conventions.ShouldAggressiveCacheTrackChanges = false;using (session.Advanced.DocumentStore.AggressivelyCacheFor(TimeSpan.FromMinutes(5))){    var user = session.Load
     
      ("users/1");}using (session.Advanced.DocumentStore.AggressivelyCacheFor(TimeSpan.FromMinutes(5))){    var user = session.Load
      
       ("users/1");}//启动强制检查更新，在SaveChanges之后documentStore.Conventions.ShouldSaveChangesForceAggresiveCacheCheck = true;2、客户端ListenerDocument Conflict listeners (IDocumentConflictListener),Document Conversion listeners (IDocumentConversionListener)Document Delete listeners (IDocumentDeleteListener)Document Query listeners (IDocumentQueryListener)Document Store listeners (IDocumentStoreListener)例子1：public class TakeNewestConflictResolutionListener : IDocumentConflictListener{    public bool TryResolveConflict(string key, JsonDocument[] conflictedDocs, out JsonDocument resolvedDocument)    {        var maxDate = conflictedDocs.Max(x => x.LastModified);        resolvedDocument = conflictedDocs.FirstOrDefault(x => x.LastModified == maxDate);         return resolvedDocument != null;    }}例子2:public class Custom{    public string Id { get; set; }     public string Name { get; set; }     public string Value { get; set; }} public class MetadataToPropertyConversionListener : IDocumentConversionListener{    public void EntityToDocument(string key, object entity, RavenJObject document, RavenJObject metadata)    {        if (entity is Custom == false)            return;        document.Remove("Value");    }     public void DocumentToEntity(string key, object entity, RavenJObject document, RavenJObject metadata)    {        if (entity is Custom == false)            return;        ((Custom)entity).Value = metadata.Value
       
        ("Raven-Document-Revision");    }}例子3：public class FailDelete : IDocumentDeleteListener{    public void BeforeDelete(string key, object entityInstance, RavenJObject metadata)    {        throw new NotSupportedException();    }}例子4：public class NonStaleQueryListener : IDocumentQueryListener{    public void BeforeQueryExecuted(IDocumentQueryCustomization customization)    {        customization.WaitForNonStaleResults();    }}例子5：public class FilterForbiddenKeysDocumentListener : IDocumentStoreListener{    private readonly IList
        
          forbiddenKeys = new List
         
           { "system" };     public bool BeforeStore(string key, object entityInstance, RavenJObject metadata, RavenJObject original)    {        return this.forbiddenKeys.Any(x => x.Equals(key, StringComparison.InvariantCultureIgnoreCase)) == false;    }     public void AfterStore(string key, object entityInstance, RavenJObject metadata)    {    }}3、批量插入//批量插入代码示例using (var bulkInsert = store.BulkInsert()){    for (int i = 0; i < 1000 * 1000; i++)    {        bulkInsert.Store(new User            {                Name = "Users #" + i            });    }}//批量插入接口原型public interface IDocumentStore{    BulkInsertOperation BulkInsert(string database = null, BulkInsertOptions options = null);}//批量插入选项原型public class BulkInsertOptions{    public bool CheckForUpdates { get; set; }     public bool CheckReferencesInIndexes { get; set; }     public int BatchSize { get; set; }}//批量插入操作原型public class BulkInsertOperation{    public delegate void BeforeEntityInsert(string id, RavenJObject data, RavenJObject metadata);         public event BeforeEntityInsert OnBeforeEntityInsert = delegate { };     public event Action
          
            Report { ... } public void Store(object entity) { ... } public void Store(object entity, string id) { ... }}4、流式查询默认的分页查询的，但是有时候，我们需要一次性查询，RavenDb提供了一种流式查询的方式//正常查询var query = session.Query
           
            ("Users/ByActive").Where(x => x.Active);using (var enumerator = session.Advanced.Stream(query)){ while (enumerator.MoveNext()) { User activeUser = enumerator.Current.Document; }}//lucene查询var luceneQuery = session.Advanced.LuceneQuery
            
             ("Users/ByActive").Where("Active:true");using (var enumerator = session.Advanced.Stream(luceneQuery)){ while (enumerator.MoveNext()) { User activeUser = enumerator.Current.Document; }}//接口原型QueryHeaderInformation queryHeaderInformation;session.Advanced.Stream(query, out queryHeaderInformation);public class QueryHeaderInformation{ public string Index { get; set; } public bool IsStable { get; set; } public DateTime IndexTimestamp { get; set; } public int TotalResults { get; set; } public Etag ResultEtag { get; set; } public Etag IndexEtag { get; set; }}//分页using (var enumerator = session.Advanced.Stream
             
              (fromEtag: Etag.Empty, start: 0, pageSize: int.MaxValue)){ while (enumerator.MoveNext()) { User activeUser = enumerator.Current.Document; }}//using (var enumerator = session.Advanced.Stream
              
               (startsWith: "users/", matches: "*Ra?en", start: 0, pageSize: int.MaxValue)){ while (enumerator.MoveNext()) { User activeUser = enumerator.Current.Document; }}//异步版本using (var asyncSession = store.OpenAsyncSession()){ var query = asyncSession.Query
               
                ("Users/ByActive").Where(x => x.Active); using (var enumerator = await asyncSession.Advanced.StreamAsync(query)) { while (await enumerator.MoveNextAsync()) { User activeUser = enumerator.Current.Document; } } using (var enumerator = await asyncSession.Advanced.StreamAsync
                
                 (Etag.Empty)) { while (await enumerator.MoveNextAsync()) { User activeUser = enumerator.Current.Document; } }}