diff --git a/framework/src/Volo.Abp.BackgroundJobs/Volo/Abp/BackgroundJobs/BackgroundJobManager.cs b/framework/src/Volo.Abp.BackgroundJobs/Volo/Abp/BackgroundJobs/BackgroundJobManager.cs
index a320263f4b..09554c9268 100644
--- a/framework/src/Volo.Abp.BackgroundJobs/Volo/Abp/BackgroundJobs/BackgroundJobManager.cs
+++ b/framework/src/Volo.Abp.BackgroundJobs/Volo/Abp/BackgroundJobs/BackgroundJobManager.cs
@@ -79,7 +79,7 @@ namespace Volo.Abp.BackgroundJobs
 
         public async Task<bool> DeleteAsync(Guid jobId)
         {
-            var jobInfo = await Store.GetAsync(jobId);
+            var jobInfo = await Store.FindAsync(jobId);
             if (jobInfo == null)
             {
                 return false;
diff --git a/framework/src/Volo.Abp.BackgroundJobs/Volo/Abp/BackgroundJobs/IBackgroundJobStore.cs b/framework/src/Volo.Abp.BackgroundJobs/Volo/Abp/BackgroundJobs/IBackgroundJobStore.cs
index 1c18d2a273..d1fd307c7a 100644
--- a/framework/src/Volo.Abp.BackgroundJobs/Volo/Abp/BackgroundJobs/IBackgroundJobStore.cs
+++ b/framework/src/Volo.Abp.BackgroundJobs/Volo/Abp/BackgroundJobs/IBackgroundJobStore.cs
@@ -14,7 +14,7 @@ namespace Volo.Abp.BackgroundJobs
         /// </summary>
         /// <param name="jobId">The Job Unique Identifier.</param>
         /// <returns>The BackgroundJobInfo object.</returns>
-        Task<BackgroundJobInfo> GetAsync(Guid jobId);
+        Task<BackgroundJobInfo> FindAsync(Guid jobId);
 
         /// <summary>
         /// Inserts a background job.
diff --git a/framework/src/Volo.Abp.BackgroundJobs/Volo/Abp/BackgroundJobs/InMemoryBackgroundJobStore.cs b/framework/src/Volo.Abp.BackgroundJobs/Volo/Abp/BackgroundJobs/InMemoryBackgroundJobStore.cs
new file mode 100644
index 0000000000..2b9d8700dc
--- /dev/null
+++ b/framework/src/Volo.Abp.BackgroundJobs/Volo/Abp/BackgroundJobs/InMemoryBackgroundJobStore.cs
@@ -0,0 +1,68 @@
+using System;
+using System.Collections.Concurrent;
+using System.Collections.Generic;
+using System.Linq;
+using System.Threading.Tasks;
+using Volo.Abp.DependencyInjection;
+using Volo.Abp.Timing;
+
+namespace Volo.Abp.BackgroundJobs
+{
+    public class InMemoryBackgroundJobStore : IBackgroundJobStore, ISingletonDependency
+    {
+        private readonly ConcurrentDictionary<Guid, BackgroundJobInfo> _jobs;
+
+        protected IClock Clock { get; }
+
+        /// <summary>
+        /// Initializes a new instance of the <see cref="InMemoryBackgroundJobStore"/> class.
+        /// </summary>
+        public InMemoryBackgroundJobStore(IClock clock)
+        {
+            Clock = clock;
+            _jobs = new ConcurrentDictionary<Guid, BackgroundJobInfo>();
+        }
+
+        public Task<BackgroundJobInfo> FindAsync(Guid jobId)
+        {
+            return Task.FromResult(_jobs[jobId]);
+        }
+        
+        public Task InsertAsync(BackgroundJobInfo jobInfo)
+        {
+            _jobs[jobInfo.Id] = jobInfo;
+
+            return Task.FromResult(0);
+        }
+
+        public Task<List<BackgroundJobInfo>> GetWaitingJobsAsync(int maxResultCount)
+        {
+            var waitingJobs = _jobs.Values
+                .Where(t => !t.IsAbandoned && t.NextTryTime <= Clock.Now)
+                .OrderByDescending(t => t.Priority)
+                .ThenBy(t => t.TryCount)
+                .ThenBy(t => t.NextTryTime)
+                .Take(maxResultCount)
+                .ToList();
+
+            return Task.FromResult(waitingJobs);
+        }
+
+        public Task DeleteAsync(BackgroundJobInfo jobInfo)
+        {
+            _jobs.TryRemove(jobInfo.Id, out _);
+
+            return Task.FromResult(0);
+        }
+
+        public Task UpdateAsync(BackgroundJobInfo jobInfo)
+        {
+            if (jobInfo.IsAbandoned)
+            {
+                return DeleteAsync(jobInfo);
+            }
+
+            return Task.FromResult(0);
+        }
+    }
+}
\ No newline at end of file
diff --git a/framework/src/Volo.Abp.BackgroundJobs/Volo/Abp/BackgroundJobs/NullBackgroundJobStore.cs b/framework/src/Volo.Abp.BackgroundJobs/Volo/Abp/BackgroundJobs/NullBackgroundJobStore.cs
deleted file mode 100644
index 42a6656567..0000000000
--- a/framework/src/Volo.Abp.BackgroundJobs/Volo/Abp/BackgroundJobs/NullBackgroundJobStore.cs
+++ /dev/null
@@ -1,39 +0,0 @@
-using System;
-using System.Collections.Generic;
-using System.Threading.Tasks;
-
-namespace Volo.Abp.BackgroundJobs
-{
-    /// <summary>
-    /// Null pattern implementation of <see cref="IBackgroundJobStore"/>.
-    /// It's used if <see cref="IBackgroundJobStore"/> is not implemented by actual persistent store
-    /// and job execution is not enabled (<see cref="IBackgroundJobOptions.IsJobExecutionEnabled"/>) for the application.
-    /// </summary>
-    public class NullBackgroundJobStore : IBackgroundJobStore
-    {
-        public Task<BackgroundJobInfo> GetAsync(Guid jobId)
-        {
-            return Task.FromResult((BackgroundJobInfo)null);
-        }
-
-        public Task InsertAsync(BackgroundJobInfo jobInfo)
-        {
-            return Task.CompletedTask;
-        }
-
-        public Task<List<BackgroundJobInfo>> GetWaitingJobsAsync(int maxResultCount)
-        {
-            return Task.FromResult(new List<BackgroundJobInfo>());
-        }
-
-        public Task DeleteAsync(BackgroundJobInfo jobInfo)
-        {
-            return Task.CompletedTask;
-        }
-
-        public Task UpdateAsync(BackgroundJobInfo jobInfo)
-        {
-            return Task.CompletedTask;
-        }
-    }
-}
\ No newline at end of file