diff --git a/src/Volo.Abp.EntityFrameworkCore/Volo/Abp/Domain/Repositories/EntityFrameworkCore/EfCoreRepository.cs b/src/Volo.Abp.EntityFrameworkCore/Volo/Abp/Domain/Repositories/EntityFrameworkCore/EfCoreRepository.cs
index f37e3d51e6..a5b880b421 100644
--- a/src/Volo.Abp.EntityFrameworkCore/Volo/Abp/Domain/Repositories/EntityFrameworkCore/EfCoreRepository.cs
+++ b/src/Volo.Abp.EntityFrameworkCore/Volo/Abp/Domain/Repositories/EntityFrameworkCore/EfCoreRepository.cs
@@ -1,6 +1,7 @@
 using System;
-using System.Collections.Generic;
 using System.Linq;
+using System.Linq.Expressions;
+using System.Threading;
 using System.Threading.Tasks;
 using Microsoft.EntityFrameworkCore;
 using Volo.Abp.Domain.Entities;
@@ -40,14 +41,10 @@ namespace Volo.Abp.Domain.Repositories.EntityFrameworkCore
             return DbSet.AsQueryable();
         }
 
-        public override Task<List<TEntity>> GetListAsync()
+        public override async Task<TEntity> GetAsync(TPrimaryKey id, CancellationToken cancellationToken = default(CancellationToken))
         {
-            return GetQueryable().ToListAsync();
-        }
+            var entity = await FindAsync(id, cancellationToken);
 
-        public override async Task<TEntity> GetAsync(TPrimaryKey id)
-        {
-            var entity = await FindAsync(id);
             if (entity == null)
             {
                 throw new EntityNotFoundException(typeof(TEntity), id);
@@ -56,16 +53,14 @@ namespace Volo.Abp.Domain.Repositories.EntityFrameworkCore
             return entity;
         }
 
-        //TODO: Find by multiple primary key
-
         public override TEntity Find(TPrimaryKey id)
         {
             return DbSet.Find(id);
         }
 
-        public override Task<TEntity> FindAsync(TPrimaryKey id)
+        public override Task<TEntity> FindAsync(TPrimaryKey id, CancellationToken cancellationToken = default(CancellationToken))
         {
-            return DbSet.FindAsync(id);
+            return DbSet.FindAsync(new object[] { id }, cancellationToken);
         }
 
         public override TEntity Insert(TEntity entity)
@@ -80,10 +75,10 @@ namespace Volo.Abp.Domain.Repositories.EntityFrameworkCore
             return insertedEntity.Id;
         }
 
-        public override async Task<TPrimaryKey> InsertAndGetIdAsync(TEntity entity)
+        public override async Task<TPrimaryKey> InsertAndGetIdAsync(TEntity entity, CancellationToken cancellationToken = default(CancellationToken))
         {
-            var insertedEntity = await InsertAsync(entity);
-            await DbContext.SaveChangesAsync(true);
+            var insertedEntity = await InsertAsync(entity, cancellationToken);
+            await DbContext.SaveChangesAsync(cancellationToken);
             return insertedEntity.Id;
         }
 
@@ -109,9 +104,13 @@ namespace Volo.Abp.Domain.Repositories.EntityFrameworkCore
             DbSet.Remove(entity);
         }
 
-        public override Task<int> CountAsync()
+        public override async Task DeleteAsync(Expression<Func<TEntity, bool>> predicate, CancellationToken cancellationToken = default(CancellationToken))
         {
-            return DbSet.CountAsync();
+            var entities = await GetQueryable().Where(predicate).ToListAsync(cancellationToken);
+            foreach (var entity in entities)
+            {
+                DbSet.Remove(entity);
+            }
         }
     }
 }
diff --git a/src/Volo.Abp/Volo/Abp/Domain/Repositories/IQueryableRepository.cs b/src/Volo.Abp/Volo/Abp/Domain/Repositories/IQueryableRepository.cs
index b54c8eda3c..588717899e 100644
--- a/src/Volo.Abp/Volo/Abp/Domain/Repositories/IQueryableRepository.cs
+++ b/src/Volo.Abp/Volo/Abp/Domain/Repositories/IQueryableRepository.cs
@@ -1,6 +1,7 @@
 using System;
 using System.Linq;
 using System.Linq.Expressions;
+using System.Threading;
 using System.Threading.Tasks;
 using JetBrains.Annotations;
 using Volo.Abp.Domain.Entities;
@@ -16,6 +17,8 @@ namespace Volo.Abp.Domain.Repositories
     public interface IQueryableRepository<TEntity, TPrimaryKey> : IRepository<TEntity, TPrimaryKey>, IQueryable<TEntity>
         where TEntity : class, IEntity<TPrimaryKey>
     {
+        //TODO: Is Delete needed?
+
         /// <summary>
         /// Deletes many entities by function.
         /// Notice that: All entities fits to given predicate are retrieved and deleted.
@@ -31,7 +34,8 @@ namespace Volo.Abp.Domain.Repositories
         /// This may cause major performance problems if there are too many entities with
         /// given predicate.
         /// </summary>
+        /// <param name="cancellationToken">A <see cref="T:System.Threading.CancellationToken" /> to observe while waiting for the task to complete.</param>
         /// <param name="predicate">A condition to filter entities</param>
-        Task DeleteAsync([NotNull] Expression<Func<TEntity, bool>> predicate);
+        Task DeleteAsync([NotNull] Expression<Func<TEntity, bool>> predicate, CancellationToken cancellationToken = default(CancellationToken));
     }
 }
\ No newline at end of file
diff --git a/src/Volo.Abp/Volo/Abp/Domain/Repositories/IRepository.cs b/src/Volo.Abp/Volo/Abp/Domain/Repositories/IRepository.cs
index e9219c78dc..3012dd5272 100644
--- a/src/Volo.Abp/Volo/Abp/Domain/Repositories/IRepository.cs
+++ b/src/Volo.Abp/Volo/Abp/Domain/Repositories/IRepository.cs
@@ -1,4 +1,4 @@
-using System.Collections.Generic;
+using System.Threading;
 using System.Threading.Tasks;
 using JetBrains.Annotations;
 using Volo.Abp.Domain.Entities;
@@ -23,20 +23,6 @@ namespace Volo.Abp.Domain.Repositories
     public interface IRepository<TEntity, TPrimaryKey> : IRepository
         where TEntity : class, IEntity<TPrimaryKey>
     {
-        /// <summary>
-        /// Used to get all entities.
-        /// </summary>
-        /// <returns>List of all entities</returns>
-        [NotNull]
-        List<TEntity> GetList();
-
-        /// <summary>
-        /// Used to get all entities.
-        /// </summary>
-        /// <returns>List of all entities</returns>
-        [NotNull]
-        Task<List<TEntity>> GetListAsync();
-
         /// <summary>
         /// Gets an entity with given primary key.
         /// Throws <see cref="EntityNotFoundException"/> if can not find an entity with given id.
@@ -51,9 +37,10 @@ namespace Volo.Abp.Domain.Repositories
         /// Throws <see cref="EntityNotFoundException"/> if can not find an entity with given id.
         /// </summary>
         /// <param name="id">Primary key of the entity to get</param>
+        /// <param name="cancellationToken">A <see cref="T:System.Threading.CancellationToken" /> to observe while waiting for the task to complete.</param>
         /// <returns>Entity</returns>
         [NotNull]
-        Task<TEntity> GetAsync(TPrimaryKey id);
+        Task<TEntity> GetAsync(TPrimaryKey id, CancellationToken cancellationToken = default(CancellationToken));
 
         /// <summary>
         /// Gets an entity with given primary key or null if not found.
@@ -67,8 +54,9 @@ namespace Volo.Abp.Domain.Repositories
         /// Gets an entity with given primary key or null if not found.
         /// </summary>
         /// <param name="id">Primary key of the entity to get</param>
+        /// <param name="cancellationToken">A <see cref="T:System.Threading.CancellationToken" /> to observe while waiting for the task to complete.</param>
         /// <returns>Entity or null</returns>
-        Task<TEntity> FindAsync(TPrimaryKey id);
+        Task<TEntity> FindAsync(TPrimaryKey id, CancellationToken cancellationToken = default(CancellationToken));
 
         /// <summary>
         /// Inserts a new entity.
@@ -80,9 +68,10 @@ namespace Volo.Abp.Domain.Repositories
         /// <summary>
         /// Inserts a new entity.
         /// </summary>
+        /// <param name="cancellationToken">A <see cref="T:System.Threading.CancellationToken" /> to observe while waiting for the task to complete.</param>
         /// <param name="entity">Inserted entity</param>
         [NotNull]
-        Task<TEntity> InsertAsync([NotNull] TEntity entity);
+        Task<TEntity> InsertAsync([NotNull] TEntity entity, CancellationToken cancellationToken = default(CancellationToken));
 
         /// <summary>
         /// Inserts a new entity and gets it's Id.
@@ -98,9 +87,10 @@ namespace Volo.Abp.Domain.Repositories
         /// It may require to save current unit of work
         /// to be able to retrieve id.
         /// </summary>
+        /// <param name="cancellationToken">A <see cref="T:System.Threading.CancellationToken" /> to observe while waiting for the task to complete.</param>
         /// <param name="entity">Entity</param>
         /// <returns>Id of the entity</returns>
-        Task<TPrimaryKey> InsertAndGetIdAsync([NotNull] TEntity entity);
+        Task<TPrimaryKey> InsertAndGetIdAsync([NotNull] TEntity entity, CancellationToken cancellationToken = default(CancellationToken));
 
         /// <summary>
         /// Updates an existing entity.
@@ -112,9 +102,10 @@ namespace Volo.Abp.Domain.Repositories
         /// <summary>
         /// Updates an existing entity. 
         /// </summary>
+        /// <param name="cancellationToken">A <see cref="T:System.Threading.CancellationToken" /> to observe while waiting for the task to complete.</param>
         /// <param name="entity">Entity</param>
         [NotNull]
-        Task<TEntity> UpdateAsync([NotNull] TEntity entity);
+        Task<TEntity> UpdateAsync([NotNull] TEntity entity, CancellationToken cancellationToken = default(CancellationToken));
 
         /// <summary>
         /// Deletes an entity.
@@ -125,8 +116,9 @@ namespace Volo.Abp.Domain.Repositories
         /// <summary>
         /// Deletes an entity.
         /// </summary>
+        /// <param name="cancellationToken">A <see cref="T:System.Threading.CancellationToken" /> to observe while waiting for the task to complete.</param>
         /// <param name="entity">Entity to be deleted</param>
-        Task DeleteAsync([NotNull] TEntity entity);
+        Task DeleteAsync([NotNull] TEntity entity, CancellationToken cancellationToken = default(CancellationToken));
 
         /// <summary>
         /// Deletes an entity by primary key.
@@ -137,19 +129,8 @@ namespace Volo.Abp.Domain.Repositories
         /// <summary>
         /// Deletes an entity by primary key.
         /// </summary>
+        /// <param name="cancellationToken">A <see cref="T:System.Threading.CancellationToken" /> to observe while waiting for the task to complete.</param>
         /// <param name="id">Primary key of the entity</param>
-        Task DeleteAsync(TPrimaryKey id);
-
-        /// <summary>
-        /// Gets count of all entities in this repository.
-        /// </summary>
-        /// <returns>Count of entities</returns>
-        int Count();
-
-        /// <summary>
-        /// Gets count of all entities in this repository.
-        /// </summary>
-        /// <returns>Count of entities</returns>
-        Task<int> CountAsync();
+        Task DeleteAsync(TPrimaryKey id, CancellationToken cancellationToken = default(CancellationToken));
     }
 }
diff --git a/src/Volo.Abp/Volo/Abp/Domain/Repositories/QueryableRepositoryBase.cs b/src/Volo.Abp/Volo/Abp/Domain/Repositories/QueryableRepositoryBase.cs
index dd2e1f6416..1833e87418 100644
--- a/src/Volo.Abp/Volo/Abp/Domain/Repositories/QueryableRepositoryBase.cs
+++ b/src/Volo.Abp/Volo/Abp/Domain/Repositories/QueryableRepositoryBase.cs
@@ -3,6 +3,7 @@ using System.Collections;
 using System.Collections.Generic;
 using System.Linq;
 using System.Linq.Expressions;
+using System.Threading;
 using System.Threading.Tasks;
 using Volo.Abp.Domain.Entities;
 
@@ -35,11 +36,6 @@ namespace Volo.Abp.Domain.Repositories
 
         protected abstract IQueryable<TEntity> GetQueryable();
 
-        public override List<TEntity> GetList()
-        {
-            return GetQueryable().ToList();
-        }
-
         public override TEntity Find(TPrimaryKey id)
         {
             return GetQueryable().FirstOrDefault(CreateEqualityExpressionForId(id));
@@ -53,15 +49,10 @@ namespace Volo.Abp.Domain.Repositories
             }
         }
 
-        public virtual Task DeleteAsync(Expression<Func<TEntity, bool>> predicate)
+        public virtual Task DeleteAsync(Expression<Func<TEntity, bool>> predicate, CancellationToken cancellationToken = default(CancellationToken))
         {
             Delete(predicate);
             return Task.CompletedTask;
         }
-
-        public override int Count()
-        {
-            return GetQueryable().Count();
-        }
     }
 }
\ No newline at end of file
diff --git a/src/Volo.Abp/Volo/Abp/Domain/Repositories/RepositoryBase.cs b/src/Volo.Abp/Volo/Abp/Domain/Repositories/RepositoryBase.cs
index 08ce710839..8883edcd11 100644
--- a/src/Volo.Abp/Volo/Abp/Domain/Repositories/RepositoryBase.cs
+++ b/src/Volo.Abp/Volo/Abp/Domain/Repositories/RepositoryBase.cs
@@ -1,6 +1,6 @@
 using System;
-using System.Collections.Generic;
 using System.Linq.Expressions;
+using System.Threading;
 using System.Threading.Tasks;
 using Volo.Abp.Domain.Entities;
 
@@ -15,16 +15,10 @@ namespace Volo.Abp.Domain.Repositories
     public abstract class RepositoryBase<TEntity, TPrimaryKey> : IRepository<TEntity, TPrimaryKey>
         where TEntity : class, IEntity<TPrimaryKey>
     {
-        public abstract List<TEntity> GetList();
-
-        public virtual Task<List<TEntity>> GetListAsync()
-        {
-            return Task.FromResult(GetList());
-        }
-
         public virtual TEntity Get(TPrimaryKey id)
         {
             var entity = Find(id);
+
             if (entity == null)
             {
                 throw new EntityNotFoundException(typeof(TEntity), id);
@@ -33,21 +27,21 @@ namespace Volo.Abp.Domain.Repositories
             return entity;
         }
 
-        public virtual Task<TEntity> GetAsync(TPrimaryKey id)
+        public virtual Task<TEntity> GetAsync(TPrimaryKey id, CancellationToken cancellationToken = default(CancellationToken))
         {
             return Task.FromResult(Get(id));
         }
 
         public abstract TEntity Find(TPrimaryKey id);
 
-        public virtual Task<TEntity> FindAsync(TPrimaryKey id)
+        public virtual Task<TEntity> FindAsync(TPrimaryKey id, CancellationToken cancellationToken = default(CancellationToken))
         {
             return Task.FromResult(Find(id));
         }
 
         public abstract TEntity Insert(TEntity entity);
 
-        public virtual Task<TEntity> InsertAsync(TEntity entity)
+        public virtual Task<TEntity> InsertAsync(TEntity entity, CancellationToken cancellationToken = default(CancellationToken))
         {
             return Task.FromResult(Insert(entity));
         }
@@ -57,21 +51,21 @@ namespace Volo.Abp.Domain.Repositories
             return Insert(entity).Id;
         }
 
-        public virtual Task<TPrimaryKey> InsertAndGetIdAsync(TEntity entity)
+        public virtual Task<TPrimaryKey> InsertAndGetIdAsync(TEntity entity, CancellationToken cancellationToken = default(CancellationToken))
         {
             return Task.FromResult(InsertAndGetId(entity));
         }
 
         public abstract TEntity Update(TEntity entity);
 
-        public virtual Task<TEntity> UpdateAsync(TEntity entity)
+        public virtual Task<TEntity> UpdateAsync(TEntity entity, CancellationToken cancellationToken = default(CancellationToken))
         {
             return Task.FromResult(Update(entity));
         }
 
         public abstract void Delete(TEntity entity);
 
-        public virtual Task DeleteAsync(TEntity entity)
+        public virtual Task DeleteAsync(TEntity entity, CancellationToken cancellationToken = default(CancellationToken))
         {
             Delete(entity);
             return Task.CompletedTask;
@@ -88,19 +82,12 @@ namespace Volo.Abp.Domain.Repositories
             Delete(entity);
         }
 
-        public virtual Task DeleteAsync(TPrimaryKey id)
+        public virtual Task DeleteAsync(TPrimaryKey id, CancellationToken cancellationToken = default(CancellationToken))
         {
             Delete(id);
             return Task.CompletedTask;
         }
 
-        public abstract int Count();
-
-        public virtual Task<int> CountAsync()
-        {
-            return Task.FromResult(Count());
-        }
-
         protected static Expression<Func<TEntity, bool>> CreateEqualityExpressionForId(TPrimaryKey id)
         {
             var lambdaParam = Expression.Parameter(typeof(TEntity));