Hangfire 1.7.29

https://www.hangfire.io/blog/ Please see https://docs.hangfire.io/en/latest/upgrade-guides/upgrading-to-hangfire-1.7.html to learn how to upgrade from 1.6.X. 1.7.29 Hangfire.Core • Added – `RecurringJobManager.TriggerExecution` method that returns identifier of a created job. • Added – `GetRecurringJobIds` extension method for `JobStorageConnection` that returns only identifiers. • Added – `DashboardMetric.Url` property to make it possible for metrics on the Overview page to be clickable. • Changed – Bump Moment.js version to 2.29.3 in Dashboard UI (by @Westat-Transportation). • Fixed – Deserialization issues with `DateOnly` and `TimeOnly` in .NET 6.0 or other new types in CoreLib. • Fixed – Don't even try to catch unsafe exceptions like `OutOfMemoryException` or `StackOverflowException`. • Fixed – Add non-breaking space between Server Id and Status glyph on the Servers page. • Fixed – Problems with internal wait implementation shouldn't cause high CPU issues now, added protection and logging. • Fixed – Wait can't be performed now on a signaled `ManualResetEvent` instance in `BackgroundExecution`. Hangfire.SqlServer • Fixed – Command batching is now fully working for the Microsoft.Data.SqlClient package (by @0xced). 1.7.28 Hangfire.Core • Fixed – Reduce the number of attempts in `BackgroundJobStateChanger` to avoid infinite loops. • Fixed – Typos in German translation (by @saxx). • Fixed – Translations in Turkish translation (by @can-zengin). Hangfire.SqlServer • Fixed – Possibly fixed CPU consumption problems and high amounts of fetching queries after deploys to IIS. • Fixed – No more than a single long-polling query is allowed per storage instance when using sub-second polling. • Fixed – Don't depend on thread pool when sending heartbeats for active jobs to avoid problems when it's starved. 1.7.27 Hangfire.Core • Added – Turkish language support for the Dashboard UI (by @csarigul). • Fixed – Trigger button in the Dashboard UI doesn't respect a custom time zone resolver. • Fixed – Dispatchers stopped when unable to add the ExecutionId data for an exception instance. • Fixed – Safari's zoom feature breaks the Dashboard UI (by @oguzhantopcu). • Fixed – Some typos in XML documentation comments (by @GitHubPang). 1.7.26 Hangfire.Core • Security – Fix "Dashboard UI accessible from outside by default since 1.7.25" regression. 1.7.25 Hangfire.Core • Changed – Upgrade Bootstrap from 3.3.7 to version 3.4.1 in Dashboard UI. • Changed – Upgrade Chart.js from 2.7.3 to version 2.9.4 in Dashboard UI. • Changed – Upgrade jQuery from 2.2.4 to version 3.6.0 in Dashboard UI. • Fixed – Check background job existence before adding a continuation id to job parameters. • Fixed – Incorrect validation for the `HeartbeatInterval` option (by @GitHubPang). • Fixed – Use better stacking for succeeded/failed charts in the Dashboard UI. • Fixed – Move explicit styles to CSS to fix possible CSP errors in Dashboard UI. • Fixed – Reset default sync auth filter when async one is specified in Dashboard UI. Hangfire.SqlServer • Fixed – Avoid any blocked rows when removing inactive servers from the `Server` table. Hangfire.NetCore and Hangfire.AspNetCore • Added – More overloads for the `AddHangfireServer` extension method in .NET Core. • Deprecated – `UseHangfireServer` method for targets where `AddHangfireServer` one is available. 1.7.24 Hangfire.Core • Added – Support for async auth methods via the `DashboardOptions.AsyncAuthorization` property (by @rosenbjerg). • Fixed – Error alert in Dashboard UI is now correctly shown when sidebar is present (by @danillewin). • Fixed – Reference an empty favicon in Dashboard UI to prevent backend 404s (by @dan2468). • Fixed – Back-to-site link text in Dashboard UI is now hidden on small screens (by @danillewin). • Fixed – Avoid memory leak in the `AppBuilderExtensions` class (by @LordJZ). • Fixed – Make the `TypeHelper` class public instead of internal to use it outside. Hangfire.SqlServer • Changed – Don't use the `readcommittedlock` table hint when not required. • Project – Stop using `TransactionScope` class in tests, re-create database instead. • Project – Make it possible to run SQL Server tests on Mono on Linux. Hangfire.AspNetCore • Added – Support for async auth methods via the `DashboardOptions.AsyncAuthorization` property (by @rosenbjerg). • Added – Authorization policy support via the new `MapHangfireDashboardWithAuthorizationPolicy` method (by @dasiths). 1.7.23 Hangfire.Core • Added – `JobId` property to `JobPerformanceException` for error logging purposes (by @Plasma). • Fixed – `JsonSerializationException` when using `IdempotentCompletionAttribute`. • Fixed – Unreported yet corner case related to daylight time transition by upgrading Cronos to 0.7.1 (by @aidmsu). • Fixed – Dashboard issue: recurring job table doesn't handle very long cron strings. • Fixed – Add missing argument-is-null check for the `DeserializePayload` method. • Project – Replace deprecated `PerformContext` ctor usage to avoid alerts in SonarQube (by @kumaheiyama). • Project – Avoid possible `NullReferenceException` in tests to fix alerts in Fortify analyser. • Project – Release connections properly in tests to fix alerts in Fortify analyser. Hangfire.SqlServer • Fixed – `NotImplementedException` in `Transaction.EnlistPromotableSinglePhase` when running on Mono. 1.7.22 Hangfire.Core • Fixed – Fonts-related regression in Dashboard UI after upgrading Bootstrap in 1.7.21. 1.7.21 Hangfire.Core • Changed – Upgrade jQuery from 2.1.4 to 2.2.4 in Dashboard UI. • Changed – Upgrade Bootstrap from 3.3.5 to 3.3.7 in Dashboard UI. • Changed – Upgrade Moment.js to 2.29.1 in Dashboard UI. • Project – Update RazorGenerator.MsBuild package from 2.4.7 to version 2.5.0. • Project – Update 7-Zip.CommandLine package from 9.20.0 to version 18.1.0. Hangfire.SqlServer • Fixed – Ensure connection is released when exception is thrown when during lock release. • Fixed – "A network-related or instance-specific error" when using `DisableConcurrentExecution` for long-running jobs. 1.7.20 Hangfire.Core • Added – Norwegian translations (by @khellang). • Fixed – Correction on brazilian portuguese translations (by @Prestini). • Fixed – Changing time zone of recurring job without changing cron expression causes immediate execution. Hangfire.SqlServer Please see https://www.hangfire.io/blog/2021/03/19/hangfire-1.7.20.html for details, manual changes required for those who already migrated to Schema 6 and 7. This problem will be also fixed in a new migration in Hangfire 1.8.0. • Fixed – `Schema 6` migration now fixes problem that prevents 2,147,483,648th job from being enqueued. Hangfire.NetCore and Hangfire.AspNetCore • Added – An overload for `AddHangfireServer` utilizing `IServiceProvider` (by @penenkel). • Added – `IBackgroundJobClientFactory` and `IRecurringJobManagerFactory` interfaces to fix the following bug. • Fixed – Dashboard UI is unable to 'requeue' job on other then default `JobStorage`. 1.7.19 Hangfire.Core • Added – German (Deutsch) Dashboard UI localization (by @d-oit). • Added – `IGlobalConfiguration.UseMaxArgumentSizeToRender` method to avoid "VALUE TOO BIG" messages. • Changed – Remove "readonly" keyword from the `JobMethodCallRenderer.MaxArgumentToRenderSize` field to support .NET 5.0. • Fixed – Race condition in `AspNetShutdownDetector` leads to `NullReferenceException` (by @jr01). • Fixed – Avoid ArgumentException: Item has already been added when preserving an original exception. • Project – Add repository link to nuspec files (by @jeremyhayes). Hangfire.SqlServer • Fixed – Return `null` instead of throwing FormatException when job id can't be parsed. • Project – Run the entire Hangfire.SqlServer test suite against the new Microsoft.Data.SqlClient package. 1.7.18 Hangfire.SqlServer • Added – `SqlServerStorageOptions.DeleteExpiredBatchSize` option to remove more expired records in a single pass. • Fixed – Don't throw from `SqlServerStorage.ToString` method when using custom factory or existing connection. 1.7.17 Hangfire.SqlServer • Fixed – SqlException "Incorrect syntax near 'throw'" after upgrading to 1.7.15 when using SQL Server 2008 or 2008R2. 1.7.16 Hangfire.SqlServer • Fixed – Blocking problems when using multiple storages with the same queue names in the same process (appeared in 1.7.9). 1.7.15 Hangfire.Core • Added – `IGlobalConfiguration.UseMaxLinesInExceptionDetails` option to cap the size of stack traces. • Changed – Only the first 100 lines of a stack trace will be preserved now by default in Failed state. • Fixed – Don't let exceptions with huge stack traces take up too much storage space. Hangfire.SqlServer • Fixed – Avoid deadlocks when using the `SetJobParameter` method without introducing issues for older schemas. • Fixed – Remove duplicate sorting in the `SqlServerMonitoringApi.GetJobs` method which is used by a lot of queries. 1.7.14 Hangfire.SqlServer • Fixed – Duplicate entries in the `JobParameters` table after upgrading to version 1.7.13. • Fixed – Extensive retries on a method that has a retry attribute after upgrading to 1.7.13. • Fixed – "ArgumentException: An item with the same key has already been added. Key: RetryCount" in `SqlServerMonitoringApi`. 1.7.13 Hangfire.Core • Added – Catalan translation for Dashboard UI (based on Spanish translation, by @agausachs). • Added – Support for configuring recommended serializer settings via callback (by @Yaevh). • Fixed – Use correct wording for job parameters in Job Details page, add it to resources. • Fixed – Don't push negative points to the realtime graph in dashboard. • Fixed – Don't depend on history collection type returned from Storage API. • Project – Execute tests one by one to ensure exit code isn't being lost (by @willchis). Hangfire.SqlServer • Added – `UseIgnoreDupKeyOption` for SQL Server storage configuration (changes to [Set] and [Hash] tables required). • Fixed – Don't truncate too long keys silently, throw exceptions instead. • Fixed – Add missing null checks for methods in the `SqlServerWriteOnlyTransaction` class. • Fixed – Change `holdlock` hint to `xlock` in `merge` statements in transaction to prevent deadlocks. • Fixed – Don't rethrow "Lock request time out period exceeded" exceptions from expiration manager. • Fixed – Increase [Server].[Id] column's length to 200 for new installations. 1.7.12 Hangfire.Core • Added – Display actual job payload and exception message on job details page when could find the method. • Added – French translation for Dashboard UI (by @PaulARoy). • Added – Expose IStorageConnection.GetRecurringJobs(IEnumerable ids) to public. • Changed – Bump thread priority in heartbeat process for constrained environments. • Changed – Display job properties in a dedicated row in job details page. • Fixed – Avoid storage round-trip when displaying continuations on job details page. 1.7.11 Hangfire.Core • Added – Display recurring job exceptions directly in the Dashboard UI. • Added – Add built-in support for reliable shutdown detection of ASP.NET apps. • Changed – Unify exception handling in recurring job scheduler. • Changed – Internal feature to perform state changes without calling any filters. • Changed – Decrease the number of retry attempts for recurring jobs to 5. • Fixed – Let workers to ignore any state change filters when all previous attempts to call them failed. • Fixed – Don't let `RecurringJobScheduler` to stall the pipeline when extension filters throw an exception. • Fixed – Don't let `DelayedJobScheduler` to stall the pipeline when state filters throw an exception. • Fixed – `JobLoadException` when new methods deployed, caused by overlapped recycles in ASP.NET applications. • Fixed – Configuration changes aren't taken into account, caused by overlapped recycles in ASP.NET. • Fixed – Zombie servers shown on the "Servers" page that aren't stopped automatically unless app pool is recycled. • Fixed – Pass the whole exception to the `Error` field of a recurring job. • Fixed – Re-schedule recurring jobs with unsupported versions, instead of stopping the pipeline. • Fixed – Don't stumble over non-existing recurring jobs in a scheduler. • Fixed – Add another check before removing non-existing jobs from delayed jobs to avoid race conditions. • Fixed – Avoid throwing `NullReferenceException` instead of `InvalidOperationException` when deserializing a job. • Fixed – Don't transform queue names to upper case in the Dashboard UI. 1.7.10 Hangfire.Core • Added – Farsi translation for Dashboard UI (by @sepehr1101). • Added – Portuguese translation for Dashboard UI (by @GeErghon). • Added – `PrefixPath` in `DashboardOptions` (by @shenjielx). • Added – Allow `PageUrl` to be overridden by subclass (by @brendonparker). Hangfire.SqlServer • Changed – Use `XACT_ABORT` option for `ExpirationManager` queries. • Changed – Don't rely on implicit rollback when disposing transactions. • Fixed – `NullReferenceException` in logs thrown from `SqlInternalTransaction.Rollback` method. 1.7.9 Hangfire.Core • Fixed – Additional Chinese translation for Dashboard UI (by @brookqin). • Fixed – Added `null` checks for expired failed jobs in Dashboard UI (by @ppkale1995-cimpress). • Fixed – Add word break to definition lists for state cards in Dashboard UI. • Fixed – Render long recurring job identifiers correctly in Dashboard UI. Hangfire.SqlServer • Changed – Implement long polling fetch for sub-second polling delays without `sp_getapplock`. • Fixed – Don't leak `DbConnection` instance when an exception occurs during its opening. • Fixed – Can not obtain connection from the pool exception after database was offline. • Fixed – High number of waits in SQL Server when Hangfire Servers are idle. Documentation • Changed – Update "Making ASP.NET Applications Always Running" for .NET Core (by @unionthugface). • Fixed – Fix typo in the README.md file (by @tawfikkh). 1.7.8 Hangfire.Core • Added – `IGlobalConfiguration.UseResultsInContinuations` method to globally enable results for continuations. • Added – Ability to push antecedent job's result to continuations via job parameters with `ContinuationsSupport`. • Added – `JobParameterInjectionFilter` server filter to inject job parameters as arguments. • Added – Allow to specify a custom thread factory in `UseBackgroundPool` methods. • Changed – Add retry attempts for recurring jobs instead of immediately disabling them. • Fixed – `CultureInfo.InvariantCulture` is now restored properly in background jobs. • Fixed – Recurring jobs aren't triggered early after changing their cron expressions. • Fixed – Don't trigger recurring job when it can't be scheduled due to errors. • Fixed – Argument with a `null` value is skipped when displaying job arguments in Dashboard UI. • Fixed – Add a workaround for resolving `System.Diagnostics.Debug` type in .NET Core 3.0. • Deprecated – Deprecate the `JobActivatorScope.InnerScope` property as it wasn't implemented. Hangfire.SqlServer • Added – Support for Microsoft.Data.SqlClient package when using a custom connection factory (Part II). • Fixed – Remove `System.Data.SqlClient` dependency from `SqlCommandBatch` and `ExpirationManager`. Hangfire.AspNetCore • Added – `IAppBuilder.MapHangfireDashboard` method for ASP.NET Core 3.0 endpoint routing (by @kendaleiv). • Changed – Add explicit `netcoreapp3.0` target with "Microsoft.AspNetCore.App" framework reference (by @stebueh). Hangfire.NetCore • Changed – Add explicit `netcoreapp3.0` target with reference to "3.0.0" packages. Documentation • Added – Making ASP.NET Core application always running on IIS (by @bamotav). • Fixed – Small typo on the "Getting Started in ASP.NET Core applications" page (by @msynk). • Fixed – Small spelling correction in "Throttling & Rate Limiters" (by @Bert-R). • Fixed – Small typo in the "Sending Email" tutorial (by @nabeelvalley). • Fixed – Correct spelling of 'prerequisites' in README.md (by @lgirvin). 1.7.7 Hangfire.Core • Changed – Produce a trace log message with details when updating a recurring job. • Changed – Return early from `CoreBackgroundJobFactory.Create` when storage returns `null`. • Project – Minor changes for the `Readme.md` file (by @231293). • Project – Add `netcoreapp3.0` target framework for Hangfire.Core.Tests. • Project – Add support for MSBuild 15.0 (VS 2019) when building `*.cshtml` files. Dashboard UI • Added – Allow modification of the Dashboard UI title (by @tbertenshaw). • Added – Support for HTML tags on the Dashboard UI title (by @augustoproiete). • Added – Buttons for 1,000 and 5,000 items per page in dashboard. • Added – Links to previous/next pages to the top of the dashboard page. • Changed – Expose the `RazorPage.Context` property as a public member. • Fixed – Supplementary Chinese translation (by @mccj). • Fixed – Don't update real-time chart when too much time passed since the last update. Hangfire.SqlServer • Added – Add support for Microsoft.Data.SqlClient package when using custom connection factory (Part I). • Added – Add `UseFineGrainedLocks` option to avoid deadlocks in some theoretical cases. • Added – Add missing overload for `UseSqlServerStorage` with connection factory parameter only. • Added – Expose the SqlServerObjectsInstaller.GetInstallScript method (by @altso). • Fixed – Make command batching working on .NET Core when using System.Data.SqlClient 4.7.0 and higher. • Fixed – Permit dash characters (`-`) in schema names (by @kendaleiv). • Fixed – Escape square bracket characters in schema names. • Project – Add support for `netcoreapp3.0` target in Hangfire.SqlServer.Tests. • Project – Take schema name from constant in Hangfire.SqlServer.Tests (by @kendaleiv). • Project – Make Hangfire.SqlServer.Tests work on Linux in Travis CI environment. Hangfire.AspNetCore • Fixed – Add missing `AddHangfireServer` method for .NET Framework 4.6.1 and higher (by @danstur). 1.7.6 Hangfire.Core • Changed – Add support for dash characters (`-`) in queue names (by @augustoproiete). • Fixed – Show actual error in Dashboard UI when recurring job can't be scheduled. • Fixed – Ensure backward compatibility when JSON payloads are serialized with field names only. • Fixed – Non-awaited continuations can bring down the whole app when `TaskScheduler` is set to `null`. • Fixed – Timeout value is not respected in some cases in the `WaitOneAsync` method. 1.7.5 Hangfire.Core • Fixed – Show error message when there's an error loading the statistics in Dashboard UI (by @prochnowc). • Fixed – Properly handle recurring jobs with null or empty 'Job' field. • Fixed – Disable recurring job when we can't schedule it due to an error. • Fixed – Use `LazyThreadSafetyMode.PublicationOnly` to avoid caching "JobStorage.Current is null" exceptions. Hangfire.AspNetCore & Hangfire.NetCore • Fixed – Add missing overload for the `AddHangfireServer` method with "options" action. 1.7.4 Hangfire.Core • Added – `BackgroundJobClient.RetryAttempts` property to make job creation resilient to transient exceptions. • Added – Dashboard localization support in `pt-BR` (by @candidodmv). • Changed – Protect background dispatchers from moving from stopped state to non-stopped one. • Changed – Unify `WaitOne` and `WaitOneAsync` methods with timeout and cancellation token for `WaitHandle` class. • Fixed – Don't hide an original fatal exception occurred in dispatchers in some cases. • Fixed – Dashboard UI to display "await" keyword on all task-like methods. • Fixed – Display links properly in an informational message on the Servers page in Dashboard UI. • Fixed – Wait for the heartbeat process before shutting down a server. Hangfire.SqlServer • Fixed – Potential deadlocks cause by suboptimal queries when using `SlidingInvisibilityTimeout` fetching. • Fixed – Prevent zero delays between fetch retry attempts when lock acquisition failed without blocking. • Fixed – Specify float precision explicitly for the `Score` column in the `AddToSet` method. 1.7.3 Hangfire.Core • SECURITY – Use `HtmlEncode` in all remaining places in Dashboard UI to prevent XSS attacks. • Added – Added Dutch language, and updated missing translation on "Servers" page (by @r-win). • Added – `Cron.Never` method for adding manual recurring jobs that never fire (by @michaltalaga). • Fixed – Add missing `AddOrUpdate` extension methods for the `IRecurringJobManager` interface. • Deprecated – Unused `HtmlHelper.FormatProperties` method is now obsolete. Hangfire.SqlServer • Fixed – Wrong error message in migration script, when @CurrentSchemaVersion has a NULL value (by @penenkel). 1.7.2 Hangfire.Core • Added – `DashboardOptions.TimeZoneResolver` property to handle custom time zone resolvers in Dashboard UI. • Fixed – `RecurringJob.AddOrUpdate` method is now able to update a broken recurring job. • Fixed – Recurring job scheduler now properly handles recurring jobs whose job method or time zone is wrong. • Fixed – Don't throw an exception on Recurring Jobs page when time zone can't be resolved. Hangfire.AspNetCore & Hangfire.NetCore • Added – Automatically resolve `ITimeZoneResolver` service for the `DashboardOptions.TimeZoneResolver` property. • Fixed – Allow to resolve `IJobFilterProvider` service from the `AddHangfire` method. Hangfire.SqlServer • Fixed – Occasional "DataException: Error parsing column" error when using blocking fetch. 1.7.1 Hangfire.Core • Added – `DashboardOptions.IgnoreAntiforgeryToken` property to disable token validation in Dashboard UI. • Added – Display hints regarding server status on Servers page in Dashboard UI. • Added – Highlight recurring jobs with no next execution in Dashboard UI. • Added – Show actual error in Dashboard UI when recurring job has an invalid Cron expression. • Fixed – `InvalidOperationException` when `AllowSynchronousIO` option isn't set in ASP.NET Core 3.0. • Fixed – Set `NextExecution` value to `null` when existing recurring job has an invalid Cron expression. • Fixed – Make dashboard charts to be more culture-specific to use correct time format. • Fixed – Obsolete `UseSerializationSettings` comment now contains correct method name (by @PaitoAnderson). • Project – `resx` files now re-generated automatically when building a project. Hangfire.NetCore • Added – Worker Service host support for .NET Core without unnecessary dependencies to ASP.NET Core. Hangfire.SqlServer • Changed – Use blocking fetch implementation only for sub-second polling intervals. • Fixed – Don't fail with an exception when can't connect to MSSQL instance during start-up. • Fixed – Don't access the `JobQueue` table when using blocking query and don't have results. 1.7.0 Hangfire.Core • Added – Full .NET Core 2.0 support by explicitly targeting .NET Standard 2.0. • Added – `IGlobalConfiguration.SetDataCompatibilityLevel` to enable rolling upgrades from version 1.6. • Added – `IGlobalConfiguration.UseRecommendedSerializerSettings` method for new installations. • Added – Assemblies now loaded automatically when resolving a type when using default type resolver. • Added – Custom `TaskScheduler` can now be specified in `BackgroundJobServerOptions` for workers. • Added – `IdempotentCompletionAttribute` filter to enforce strict order for continuations. • Added – `IBackgroundJobClient.ContinueJobWith` methods to replace `ContinueWith` ones in future for clarity. • Added – `JobStorage.LinearizableReads` virtual property to avoid unnecessary waits in state changer. • Added – Allow async methods to run their continuations on worker thread by disabling `TaskScheduler`. • Added – Multi-stage shutdown to wait for graceful completion before starting to abort jobs. • Added – Asynchronous checks for job cancellation, `IJobCancellationToken` can be replaced with `CancellationToken` (by @pieceofsummer). • Added – Possibility to create millions of recurring jobs without stressing the scheduler. • Added – Second-based recurring jobs are fully supported now with 6-part cron expressions. • Added – Support for custom `TimeZoneInfo` resolvers in recurring jobs for interoperability purposes. • Added – Package now explicitly targets .NET Standard 2.0, and .NET Framework 4.6 target added as well. • Added – Type roundtrip support between .NET Core and .NET Framework for most common types. • Added – Allow to specify queue names based on job arguments with `QueueAttribute` via patterns. • Added – `PerformContext.Storage` property to allow server filters to spawn connections. • Added – `GetFirstByLowestScoreFromSet` connection method overload that returns multiple items (by @cdschneider). • Added – Entry point for custom job naming strategies available for dashboard (by @pieceofsummer). • Added – `JobDisplayNameAttribute` class for displaying jobs in dashboard, available on .NET Core (by @pieceofsummer). • Added – Support for async jobs returning ValueTask<T> (by @pieceofsummer). • Added – Support for asynchronous background processes, opens the road toward async storage. • Added – Circuit breaker pattern for background processes to reduce the logging pressure. • Added – Processing server is now able to detect it was expired, and restart itself with the new id. • Added – Ability to use custom delays for automatic retries of a background job. • Added – `ThreadAbortException` and `ThreadInterruptedException` handling to keep the background process running. • Added – Support for complex Cron expressions, including the `L`, `W`, `#` characters. • Added – `JobActivator.BeginScope` method overload with the full `PerformContext` (by @jeroenvervaeke). • Added – Support for read-only view for dashboard (by @mikechamberlain). • Added – Storage property to control the job expiration time (by @rsilvanet). • Added – Decrease the size of serialized type payloads and remove version information. • Changed – Make `TaskScheduler.Default` the default scheduler for async jobs to avoid breaking changes. • Changed – Split serializer setting to Internal and User scopes to isolate them (Version_170 Switch). • Changed – Don't allow to affect internal serialization even by `JsonConvert.DefaultSettings` (Version_170 Switch). • Changed – Share the same type binder between Hangfire itself and Newtonsoft.Json (Version_170 Switch). • Changed – Use more compact representation of dates when using `SerializeDateTime` (Version_170 Switch). • Changed – Stop using special case for `DateTime` argument serialization (Version_170 Switch). • Changed – Don't serialize unused `AwaitingState.Expiration` field (Version_170 Switch). • Changed – Specify parameter type when serializing arguments to allow using `TypeNameHandling.Auto` option. • Changed – Use case sensitive search when resolving a type as by default in .NET. • Changed – Make `SucceededState` constructor public to allow state serialization. • Changed – Add `IBackgroundJobFactory.StateMachine` property (breaking change for low level API). • Changed – Replace Rickshaw with Chart.js to have beautiful charts with less headache. • Changed – `DelayedJobScheduler` is able to use the new storage method to query multiple jobs at once. • Changed – `RecurringJobScheduler` now uses index-based checks to fetch only those jobs that should be scheduled. • Fixed – Worker now logs an error, when all the state change attempts failed due to an exception. • Fixed – Don't serialize arguments multiple times when showing job details in dashboard. • Fixed – `DateTimeOffset` conversion error when it was serialized with `TypeConverter`. • Fixed – Remove duplicate of argument deserialization code for obsolete `Job` class methods. • Fixed – Decorate all the exceptions with the `SerializableAttribute`. • Fixed – `ArgumentNullException` when job class contains method with non-resolvable generic arguments. • Fixed – "Failed to initialize CoreCLR" error, by removing reference to `Microsoft.NETCore.Portable.Compatibility`. • Fixed – Possible race conditions in `RecurringJobScheduler` that may lead to job duplicates. • Fixed – Configuration inconsistency introduced in 1.6.18 leading to issues with custom `JobActivator`. • Fixed – Triggering the recurring task doesn't update its last execution time. • Fixed – Recurring job which don't have next execution (intentionally or not) don't cause exception. • Fixed – Dashboard recurring jobs sorting is random (now it's based on next execution time). • Fixed – Performance problems with huge amount of recurring jobs. • Fixed – `NextExecution` field of a recurring job has delay in value getting set. • Fixed – Dashboard graphs have improper sizing. • Fixed – Server disappears from the list, but still performing the background processing. • Fixed – Logging is too aggressive on transient errors. • Fixed – Daylight saving time transitions now handled perfectly in recurring jobs thanks to Cronos. • Fixed – Confusing Cron scheduling, when both day-of-week and day-of-month fields set. • Project – Add `DataCompatibilityRangeFact` and `DataCompatibilityRangeTheory` classes for compatibility checks. • Project – Reduce test execution time by removing unnecessary waits. Hangfire.AspNetCore • Added – Full .NET Core 2.0 support by explicitly targeting .NET Standard 2.0. • Added – An overloaded AddHangfire method with `IServiceProvider` parameter (by @ericgreenmix and @denis-ivanov). • Added – `BackgroundJobServerHostedService` class based on `IHostedService` interface. • Added – `IServiceCollection.AddHangfireServer` method to register the server during configuration. • Changed – Custom services for factory, performer and state changer interfaces will be picked up only when all of them registered. Hangfire.SqlServer • Added – Full .NET Core 2.0 support by explicitly targeting .NET Standard 2.0. • Added – `Schema 7` migration to fix the `IX_HangFire_Set_Score` index to include the `Key` column. • Added – `Schema 6` migration with less indexes, better physical layout and `bigint` support (disabled by default). • Added – Blocking fetch support for sliding expiration-based fetch to avoid excessive polling. • Added – `SqlServerStorageOptions.EnableHeavyMigrations` switch to automatically install even heavy migrations. • Added – `SqlServerStorageOptions.DisableGlobalLocks` property to avoid custom locking scheme. • Added – `SqlServerStorageOptions.UsePageLocksOnDequeue` property to use less CPU consuming fetch. • Added – Callback method to allow to open the database with impersonation (by @BjoernHund). • Added – `SqlServerStorageOptions.UseRecommendedIsolationLevel` option to set the minimum possible level. • Changed – Identity columns either converted to the `bigint` type, or entirely removed. • Changed – Clustered indexes were organized according to the access patterns of their tables. • Changed – Most of secondary indexes were either removed or made filtered. • Changed – Optimize sliding-expiration-based fetching to use even less CPU time. • Changed – Use write reordering and fine-grained locking scheme to improve parallelism. • Changed – Monitoring API doesn't check state data to see state transition time. • Changed – Allow to use zero-based poll interval when sliding invisibility timeout. • Changed – Short paths for the `CreateExpiredJob` method to avoid some round-trips. • Changed – Set `SqlParameter` types explicitly to not to duplicate query plans. • Changed – Batch support for `AddToQueue` method when default provider is used. • Changed – Check `FetchedAt` has expected value to prevent prolonging others' work. • Changed – Use more recent Dapper 1.50.7 on all platforms except .NET Framework 4.5. • Changed – Dapper package is internalized now even on .NET Core to avoid possible conflicts. • Fixed – Avoid unnecessary waits in state changer when job was already expired. • Fixed – Cannot resolve the collation conflict in `CountersAggregator`. • Fixed – Background processing stops when identity columns exceed the `Int32.MaxValue`. • Fixed – Slowdown of scheduled jobs due to the missing index on the `[Set]` table.