Release notes are available in our blog https://www.hangfire.io/blog/ Please see https://docs.hangfire.io/en/latest/upgrade-guides/upgrading-to-hangfire-1.8.html to learn how to upgrade. 1.8.17 Hangfire.SqlServer • Fixed – `InvalidCastException` while fetching a job with older schemas regression from 1.8.16. 1.8.16 Hangfire.Core • Changed – Include fewer stack frames in exceptions come from `IServerFilter` implementations. • Changed – Don't include file information in the `ExceptionDetails` property of a FailedState instance. • Changed – Switch back to `CancellationEvent` usage instead of `CancellationToken.WaitHandle`. • Fixed – Don't commit external transaction in the `BackgroundJobStateChanger` implementation. • Fixed – Use safe default serializer settings for Newtonsoft.Json 12.X and below. • Project – Fix builds for the `net451` platform when using .NET 9.0. • Project – Significantly reduce execution time of unit tests in the `RecurringJobSchedulerFacts` class. • Project – Bump `Microsoft.CodeAnalysis.NetAnalyzers` package to version 9.0.0. Hangfire.SqlServer • Changed – Use vanilla ADO.NET when fetching a job in the `SqlServerJobQueue` implementation. • Fixed – SqlException: Must declare the scalar variable "@key" in delayed and recurring job schedulers. • Fixed – Decrease the `LockTimeout` time when calling the `sp_getapplock` procedure to 1 second for less blocking. • Project – Disable parallel tests execution when building under .NET 9.0. • Project – Run tests over the latest Microsoft.Data.SqlClient package and the `net6.0` platform. • Project – Reduce execution time of integration tests. • Project – Disable `PoolBlockingPeriod` setting on AppVeyor to handle transient test failures. 1.8.15 Hangfire.Core • Added – New `AutomaticRetryAttribute.ExceptOn` property to skip retries for specific exceptions. • Changed – Refactor filters pipeline to use less LINQ magic and fewer allocations. • Changed – Use `GetCultureInfo` instead of creating an instance in the `CaptureCultureAttribute` filter. • Changed – Cache some immutable data to avoid extra allocations. • Fixed – Improve loopback address detection (by @meziantou). • Fixed – Reformulate misleading error messages regarding retry timings (by @RGFuaWVs). • Fixed – Problem with missing localizations in the previous version. • Fixed – Don't hide exception details on Failed Jobs page when the exception message is empty. • Fixed – Problems with the first restore when using the `build.bat` command. • Fixed – Better display of canceled recurring jobs in dashboard. • Fixed – Less overall allocations with using static delegates and struct-based iterators. • Fixed – Improve precision of some diagnostic messages in the wait protection logic. • Fixed – Make all private and internal classes sealed to improve code consistency. • Fixed – Less overall pressure on garbage collector. Hangfire.SqlServer • Changed – Use query template caching based on schema name to avoid excessive `string` allocations. • Changed – Use static callbacks almost anywhere to avoid unnecessary delegate allocations. • Changed – Use `QuerySingle`* or `ReadSingle`* where possible to avoid allocating lists. • Changed – Unify `DbCommand` and `DbParameter` creation logic to improve code consistency. 1.8.13 and 1.8.14 Hangfire.Core • Changed – Partial cache for serialization and deserialization in `InvocationData` to produce less strings. • Changed – Add caching for default type serializer and resolver. • Changed – Don't let `JobFilter`-related logic to show up in profilers. • Changed – Modify `IProfiler` to be less allocatey for diagnostic purposes that almost never run. • Changed – Prefer using `CancellationToken.WaitHandle` again, since early .NET Core days are gone. • Changed – Fewer allocations when working with `IStateHandler` collections in a state machine. • Fixed – Redirect the "System.Private.Xml.Linq" assembly to the "System.Xml.Linq" one for better interoperability. • Fixed – Don't throw `KeyNotFoundException` when recurring job is malformed. • Fixed – Proper relative path calculation in `UrlHelper.To` for OWIN-based Dashboard UI (by @LordJZ). • Fixed – Typo in the Turkish localization file (by @ismkdc). • Project – Switch to a modern PowerShell 7+ to speed up SignPath installation on AppVeyor. Hangfire.SqlServer • Changed – Limit polling queries when queues are empty with a semaphore for all configurations. • Changed – Use per-queue signaling for same-process workers, instead of having a global signal. • Fixed – Don't silently truncate queue names, throw an exception instead. • Project – Decrease delays in SQL Server-related tests to complete them faster. 1.8.12 Hangfire.Core • Added – `MaxDegreeOfParallelismForSchedulers` experimental server option if supported by storage. • Added – Experimental support for parallel execution of the delayed job scheduler. • Added – Experimental support for parallel execution of the recurring job scheduler. • Fixed – Recurring job is scheduled to the past after recovering from error with `AddOrUpdate`. • Fixed – `AddOrUpdate` triggers execution of a recurring job, even if its next execution is in the future. • Fixed – Two very minor errors in the Swedish localization file (by @Uglack). Hangfire.SqlServer • Fixed – Populate `InvocationData` and `LoadException` properties in `JobDetails` method results. 1.8.11 Hangfire.Core • Changed – Add icons and fix metadata for NuGet packages. • Changed – Bump ILRepack to version 2.0.27 to avoid problems with internalizing. • Fixed – "Type exists in both Cronos and Hangfire.Core" exception. 1.8.10 Hangfire.Core • Changed – Added Norwegian translations for new keys (by @khellang). • Changed – Update Brazilian Portuguese translation (by @HugoAlames). • Changed – Bump Cronos dependency to version 0.8.3. Hangfire.AspNetCore • Fixed – Don't check `HasStarted` in `Response.WriteAsync` to avoid breaking dispatchers. Hangfire.SqlServer • Changed – Bump Dapper for the `netstandard2.0` platform to version 2.1.28. • Changed – Bump Dapper for `net451` and `netstandard1.3` platforms to version 1.60.6. Hangfire.Core, Hangfire.NetCore, Hangfire.AspNetCore, Hangfire.SqlServer, Hangfire.SqlServer.Msmq • Project – Enable NuGet package and DLL signing with a company certificate. • Project – Require NuGet package signature validation on restore for dependencies. • Project – Add `HangfireIO` as a package owner. 1.8.9 Hangfire.Core • Changed – Use `Environment.MachineName` as a server name if other environment vars aren't available. • Changed – Bump the Cronos package version from 0.7.1 to 0.8.1. • Changed – Improve portuguese translations (by @filipe-silva). • Fixed – Possible `NullReferenceException` on the Deleted Jobs page (regression from 1.8.7). • Project – Enable full source link support with embedded symbols and repository-based sources. • Project – Enable repeatable package restore using a lock file. • Project – Run unit tests against the `net6.0` platform. • Project – Modernise the build system and clean up the build scripts. Hangfire.SqlServer • Project – Enable full source link support with embedded symbols and repository-based sources. • Project – Enable repeatable package restore using a lock file. • Project – Run unit tests against the `net6.0` platform. Hangfire.NetCore • Project – Enable full source link support with embedded symbols and repository-based sources. • Project – Enable repeatable package restore using a lock file. Hangfire.AspNetCore • Fixed – Don't attempt to write response headers when response has already started (by @maliming). • Project – Enable full source link support with embedded symbols and repository-based sources. • Project – Enable repeatable package restore using a lock file. 1.8.7 Hangfire.Core • Added – Allow using macro expressions like `@hourly` for recurring jobs (by @MuhamedAbdalla). • Added – Show storage time in page footer when supported by storage implementation. • Added – Show duration and latency columns separately on the Succeeded Jobs page when supported. • Added – Show the exception column on the Deleted Jobs page when available and supported by storage. • Changed – Reduce package size by stripping unnecessary locales in Moment.js. • Changed – Bump Microsoft.Owin package to version 4.2.2. • Changed – Log a warning message when a server listens to unsupported queue names (by @MuhamedAbdalla). • Changed – Use storage time, if available, to show delay warnings in the Dashboard UI. • Fixed – Proper rendering of generic arguments on the Job Details page (by @olivermue). • Fixed – Language inconsistency in the Dashboard UI related to date/time description. • Fixed – Big stack traces take too long time to be formatted. • Fixed – Don't throw `NullReferenceException` from the Scheduled Jobs page when there's a job with missing data. • Fixed – Don't throw `NullReferenceException` from the Processing Jobs page when there's a job with missing data. • Fixed – CSS for Enqueued and Deleted state cards in dark theme. • Fixed – Log errors instead of throwing an exception when a particular table can't be cleaned. • Fixed – Avoid logging fatal exceptions when stopping a faulting background process. • Fixed – Don't display checkboxes in the Dashboard UI when job details can’t be fetched. • Fixed – Scrollbars in WebKit-based browsers are now dark in dark mode. • Project – Disable tests for `netcoreapp1.0` and `netcoreapp2.1` targets since they aren't supported in AppVeyor. • Project – Add a `net6.0` target for unit tests instead of the removed ones. • Project – Modernise projects and build environments to use the newest features. Hangfire.SqlServer • Changed – Avoid throwing an exception when a connection string has duplicate property names. • Project – Disable tests for `netcoreapp1.0` and `netcoreapp2.1` targets since they aren't supported in AppVeyor. • Project – Add a `net6.0` target for unit tests instead of the removed ones. • Project – Modernise projects and build environments to use the newest features. 1.8.6 • Changed – Update jQuery library in Dashboard UI to version 3.7.1. • Changed – Mark all types in Hangfire.Annotations with `EditorBrowsableAttribute(Never)`. • Changed – Change state card colors for the Awaiting state to match the Scheduled state. • Fixed – Exception when deserializing an instance of the `AutomaticRetryAttribute` class from JSON. • Fixed – Add serialization-related constructors for all the exception classes. • Fixed – Use invariant culture or ordinal comparisons for internal strings. • Fixed – Use invariant culture when formatting key names for metrics. • Fixed – Use `CurrentCulture` instead of `CurrentUICulture` when displaying time. • Project – Enable running static analysis by Coverity Scan weekly. • Project – Enable mandatory static analysis by the Microsoft.CodeAnalysis.NetAnalyzers package. • Project – Change MSBuild path when building using newer .NET SDKs for Razor views. Hangfire.SqlServer • Fixed – Exception in Dashboard UI when schema version is not present in a database. • Fixed – `DbCommand` resource leak when releasing a lock detected by static analysis. • Fixed – Don't add SQL Server-related metrics multiple times in Dashboard UI. Hangfire.NetCore • Fixed – Include assembly information to the Hangfire.NetCore assembly. 1.8.5 Hangfire.Core • Added – Possibility to inform a `FaviconPath` on `DashboardOptions` (by @cezar-pimentel). • Fixed – Inability to restore a disabled recurring job, regression in version 1.8.3. • Fixed – Make it possible to serialize the `AutomaticRetryAttribute` filter to JSON. Hangfire.SqlServer • Fixed – "Query processor could not produce a query plan" when removing expired counters in `Schema 5`. 1.8.4 Hangfire.Core • Added – Pass server id from a worker to the `PerformContext.ServerId` property available in filters. • Fixed – Send heartbeats until full background processing server shutdown. Hangfire.NetCore • Changed – Send the stop signal earlier in the shutdown pipeline when hosting in .NET Core 3.1 or higher. • Changed – Set processing server to null in hosted service to avoid `ObjectDisposedException`. • Fixed – Other `IHostedService` implementations can block Hangfire server from being stopped. 1.8.3 Hangfire.Core • Changed – Allow to configure `MaxLinesInStackTrace` for a particular `FailedState` instance. • Fixed – Remove job id from schedule when it's not in the Scheduled state for some reason. • Fixed – Missing invocations of recurring jobs when the new "Ignorable" option is used. • Fixed – Make `DisableConcurrentExecutionAttribute` and `LatencyTimeoutAttribute` serializable. 1.8.2 Hangfire.Core • Changed – Disable transactional job creation feature appeared in 1.8.0. • Fixed – "Can not start continuation XXX" error when storage supports transactional job creation. Hangfire.SqlServer • Fixed – `InvalidOperationException` with new dashboard metrics when a database has multiple data/log files. 1.8.1 Hangfire.Core • Added – `MisfireHandlingMode.Ignorable` to avoid scheduling recurring jobs on missed schedules. • Added – Support disabling dark mode via the `DashboardOptions.DarkModeEnabled` property. • Changed – Remove the 1-hour limitation for the `WithJobExpirationTimeout` configuration method. • Fixed – Add missing `UseDefaultCulture` configuration method overloads. • Fixed – Add missing `UseDashboardStylesheet` and `UseJobDetailsRenderer` configuration methods. • Fixed – Give even more space for identifiers on the Recurring Jobs page. • Fixed – `state-card-state-active` color is not very dark (by @coolhome). • Fixed – Slightly change chart proportions to fit 4K in Dashboard UI. Hangfire.SqlServer • Fixed – Blocked workers regression since 1.7.33 when using multiple servers inside a process. • Fixed – Target schema version is less than the current schema version error. • Fixed – Implement database metrics without the need for additional permissions. • Fixed – Use the `forceseek` table hint whenever possible to avoid performance drops. Hangfire.NetCore • Fixed – Add `net461` target for Hangfire.NetCore package to avoid missing method exceptions. 1.8.0 Hangfire.Core • Breaking – Dropped the `NET45` platform target in favor of the `NET451` target to support Visual Studio 2022. • Added – Introduce the `Job.Queue` property, so jobs now can have their own queue specified. • Added – Method overloads to create background jobs directly with a custom default queue. • Added – Method overloads to create recurring jobs directly with a custom default queue. • Added – `IBackgroundJobClient.Create` method overloads with the new `queue` parameter. • Added – Allow to filter exception types in `AutomaticRetryAttribute` by using the new `OnlyOn` property. • Added – `DeletedState` now has the persisted `Exception` property populated after a failure. • Added – `JobContinuationOptions.OnlyOnDeletedState` to create continuations after a failure. • Added – `Exception` job parameter is passed to continuation when `UseResultsInContinuations` method is used. • Added – `FromExceptionAttribute` to deal with an antecedent exception in a background job continuation. • Added – Make it possible to specify multiple `JobContinuationOptions` values for a continuation. • Added – `BackgroundJobServerOptions.IsLightweightServer` option to run a server with no storage processes. • Added – Ability to use custom formattable resource identifiers for the `DisableConcurrentExecution` filter. • Added – Pass `ServerId` to `FailedState` instances to simplify the debugging on different servers. • Added – Allow to pass job parameters when creating a job (by @brian-knoll-micronetonline). • Added – `MisfireHandlingMode.Strict` to create a job for each missed recurring job occurrence. • Added – Support for default culture and UI culture via the `UseDefaultCulture` configuration method. • Added – Introduce the `captureDefault` parameter in the `CaptureCulture` filter. • Added – `IGlobalConfiguration.UseFilterProvider` extension method to unify the configuration. • Added – Built-in `Remove` method for `JobFilterCollection` to remove global filters based on their type. • Added – `CompatibilityLevel.Version_180` flag to avoid storing culture parameters when they are the same as the default ones. • Changed – Create job atomically when `Transaction.CreateJob` feature is supported by the storage. • Changed – Query time from storage in recurring and delayed schedulers when supported by storage. • Changed – Move job to the `DeletedState` instead of `SucceededState` when its invocation was canceled by a filter. • Changed – Speedup delayed jobs when a custom default queue is specified by avoiding extra state transition. • Changed – Use UI culture from `CurrentCulture` parameter when `CurrentUICulture` one is missing. • Changed – Increase the default value for the `BackgroundJobServerOptions.StopTimeout` to 500 ms. • Deprecated – `AddOrUpdate` overloads with optional params defined in the `RecurringJobManagerExtensions` class. • Deprecated – `AddOrUpdate` overloads with optional parameters defined in the `RecurringJob` class. • Deprecated – `AddOrUpdate` method overloads with no `recurringJobId` parameter. • Deprecated – `RecurringJobOptions.QueueName` property, new methods should be used instead. • Breaking – Dropped `NET45` platform target in favor of `NET451` target to support Visual Studio 2022. Dashboard UI • Added – Dark mode support for Dashboard UI depending on the system settings (by @danillewin). • Added – Dashboard UI now has a full-width layout to display more data (by @danillewin). • Added – Allow to add custom JavaScript and CSS files to the Dashboard UI via the `DashboardRoutes` class. • Added – `DefaultRecordsPerPage` property on the `DashboardOptions` class (by @PaulARoy). • Added – `IGlobalConfiguration.UseJobDetailsRenderer` method for custom renderers for the Job Details page. • Added – Display deleted jobs in the Realtime and History graphs when supported by storage. • Added – `IGlobalConfiguration.UseDashboardMetrics` extension method to pass multiple metrics at once. • Added – State renderer for the `DeletedState` to display its new exception property. • Added – Support for new `MonitoringApi` methods for the Awaiting Jobs page. • Changed – Make it possible to display methods of non-loaded jobs in the Dashboard UI when supported by storage. • Changed – Improved display of realtime chart with more accents on failed and deleted jobs. • Changed – Don't display the queue name in the state transition list when it's the `default` one. • Changed – Display scheduled job count when the enqueued count is zero on the main metric. Extensibility • Added – `Factory`, `StateMachine`, and `Performer` properties to context classes to avoid injecting services. • Added – Allow to pass custom data to `ApplyStateContext` and `ElectStateContext` instances. • Added – Preserve custom data dictionary between the entire filter chain. • Added – Allow to pass a transaction to background job state changer when new methods are implemented. • Changed – Ignore some members when serializing a `JobFilterAttribute` instance to decrease the payload size. Storage • Added – Virtual `JobStorage.GetReadOnlyConnection` method intended to return `JobStorageConnection` for replicas. • Added – Virtual `JobStorage.HasFeature` method for querying optional features. • Added – The `JobStorageFeatures` class to avoid using magic strings in storage features. • Added – Optional `GetSetCount`, `GetSetContains`, and `GetUtcDateTime` methods for the `JobStorageConnection` class. • Added – Optional `AcquireDistributedLock` and `RemoveFromQueue` methods for the `JobStorageTransaction` class. • Added – Optional `CreateJob` and `SetJobParameter` methods for the `JobStorageTransaction` class. • Added – Optional `ParametersSnapshot` property for `BackgroundJob` and `JobData` classes to minimize roundtrips in the future. • Added – Support for transactional acknowledgment using a new storage method for better handling some data loss scenarios. • Added – Fetch `Retries` and `Awaiting` metrics in `StatisticsDto` properties when supported by storage. • Added – The `JobStorageMonitor` class with more available methods for the new features. • Changed – Allow to query job parameters without additional roundtrip when supported by storage. • Changed – Expose state data dictionaries in list DTOs when supported by storage. • Changed – Rely on storage indexing with the `Monitoring.AwaitingJobs` feature. Internals • Added – `IBackgroundProcess.UseBackgroundPool` now allows to pass thread configuration logic. • Added – `BackgroundJobServerOptions.WorkerThreadConfigurationAction` option for custom thread configuration. • Changed – Allow changing queues on the fly with custom worker configuration. • Changed – Avoid storage roundtrip to query job data in worker, take data from previous state change. • Changed – `FromParameterAttribute`-based logic now always overwrites arguments, even with non-null values. • Changed – Turn the `JobContinuationOptions` enum into flags while still possible. • Changed – Re-implement `TaskExtensions.WaitOneAsync` only with the `RegisterWaitForSingleObject` method. • Changed – `ServerHeartbeatProcess` now uses `ThreadPriority.AboveNormal` to prioritize heartbeats. Hangfire.NetCore • Added – `IApplicationBuilder.UseHangfireServer` that accepts custom factory for `IBackgroundProcessingServer`. • Added – `net451` and `netstandard1.3` targets for the package. • Changed – Use `netstandard2.1` target instead of `netcoreapp3.0` for the package. • Changed – Send the "stop" signal earlier when the host supports .NET Standard 2.1. • Changed – Don't throw `ObjectDisposedException` when hosted service is disposed twice. Hangfire.AspNetCore • Breaking – Make the package to be dependent on Hangfire.NetCore and use the same types. • Added – `IApplicationBuilder.UseHangfireServer` that accepts custom factory for `IBackgroundProcessingServer`. Hangfire.SqlServer • Breaking – Prioritise Microsoft.Data.SqlClient package over System.Data.SqlClient one. • Breaking – Dropped the `NET45` platform target in favor of the `NET451` target to support Visual Studio 2022. • Added – `Schema 8` migration with fixed `JobQueue.Id` column to use the `bigint` type. • Added – `Schema 9` migration that creates an index for the `State.CreatedAt` column. • Added – Automatic client package detection based on available types, preferring `System.Data.SqlClient` (by @0xced). • Added – `SqlServerStorageOptions.DbProviderFactory` option to use a custom provider factory. • Added – Clean up of old state entries of a non-finished job when `InactiveStateExpirationTimeout` is set. • Added – `TryAutoDetectSchemaDependentOptions` option to automatically enable options based on the schema. • Added – Optional experimental transactional acknowledge for SQL Server (`UseTransactionalAcknowledge` option). • Added – Implement the `Connection.GetUtcDateTime` feature to make work the new changes in schedulers. • Added – `SqlServerStorage.SchemaVersion` metric for Dashboard UI. • Added – `DefaultQueueProvider` option to specify a custom default queue provider. • Changed – Remove dependency on System.Data.SqlClient for Hangfire.SqlServer (by @0xced). • Changed – Set default value for the `QueuePollInterval` option to `TimeSpan.Zero`. • Changed – Polling delay when `QueuePollInterval` is set to zero now defaults to 200 ms. • Changed – Sliding invisibility timeout-based fetching method is now used by default with a 5-minute timeout. • Changed – Use command batching by default with a 5-minute maximum timeout. • Changed – Enable the `UseRecommendedIsolationLevel` option by default. • Changed – `GetJobData` now populates the `JobData.ParametersSnapshot` property to avoid additional roundtrips. • Changed – Display scheduled and processing jobs in ascending order in Dashboard UI. • Changed – Implement the `Transaction.AcquireDistributedLock` feature. • Changed – Implement the `GetSetCount.Limited feature`. • Changed – Implement the `GetSetContains feature`. • Changed – Bump the internal version of Dapper to 2.0.123. • Changed – Enable common metrics for SQL Server storage to be shown by default. • Changed – Enable the `Monitoring.AwaitingJobs` feature for SQL storage. • Deprecated – `UsePageLocksOnDequeue` option is now obsolete and doesn't affect anything. Hangfire.SqlServer.Msmq • Breaking – Dropped the `NET45` platform target in favor of the `NET451` target to support Visual Studio 2022.