These versions contain important fixes for the whole processing pipeline, including fire-and-forget, delayed and recurring jobs in the presence of custom extension filters that can throw exceptions. Also a built-in support for reliable shutdown detection of ASP. NET applications was added to the Hangfire. Core package to prevent running old code base when the new one is already deployed.
And recurring jobs page in 1. The new version brings a lot of improvements to the internal implementation of Hangfire. The new version contains authorization filters based on the non-obsolete IDashboardAuthorizationFilter interface appeared in Hangfire 1. These versions contain important fixes for Redis-based job storage implementation, including better handling of fail-over events in clustered environments, reduced number of timeout exceptions and better reliability for distributed locks.
New version contains important changes for Hangfire. SqlServer package, fixing a possible DbConnection leak after a database was taken offline and reducing the database load when sub-second polling interval is used. There are also some minor improvements for the Dashboard UI.
This version contains improvements for recurring jobs, support for Microsoft. SqlClient package, experimental ability to use background job results in continuations after calling the IGlobalConfiguration. UseResultsInContinuations extension methodeven better integration with. NET Core 3. This is a maintenance release that contains useful enhancements for Dashboard UI, support for command batching even in.
NET Core when using System. SqlClient 4. SqlClient package in Hangfire. SqlServer postponed to 1. This is yet another maintenance release with added support for dashes in queue names thanks, caioproietebetter recurring job error messages in Dashboard UI and some other useful fixes. This is a maintenance release that provides better handling of recurring job scheduling errors, clearly shows when there are problems with fetching statistics in Dashboard UI thanks, prochnowc!
Current is null exceptions, and also adds the AddHangfireServer overload with options-based callback. This release fixes occasional timeout exceptions that occur when attaching nested batch continuations for nested batches that are currently processed. The exception occurred due to a deadlock caused by different batch lock acquisition order when nested batches are involved. This is a maintenance release that contains important fixes for the Hangfire. This is a maintenance release that plays better with recently released Hangfire 1.
NET Core or. NET Standard 2.GitHub is home to over 40 million developers working together to host and review code, manage projects, and build software together. Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community. Already on GitHub?
Sign in to your account. By default, it seems, hangfire will attempt to run jobs it has missed, if for example, server was down when jobs were supposed to be run. I would like to disable this functionality. We have jobs which import products into a webshop, and for the duration of an import site becomes quite unresponsive due to resources used by the import.
Problem is we only want to run jobs at night OR when triggered manually through UI. Can I disable hangfire trying to run missed jobs after startup? I also can't found solution, but insert additional checking in start of job for time. Job aborted if difference more than 10 minutes. DBalashov that works on scheduled executions, but I also want to be able to execute the job manually when necessary. It seems on coming back from idle, hangfire will grab jobs which were to be executed in the past and sets NextExecution to Now.
It would be nice if there was a setting to prevent this. This feature is also a requirement for my use case. Jobs are expected to ONLY run at the designated time. If the server was down at the designated time or it failed then it cannot be re-run at any later date. I thought this would have sufficed, but it does not appear to stop jobs from automatically starting on startup. The recurring job scheduler only checks if there should be a scheduled execution since the previous job run, and triggers the job if needed.
It doesn't care if the scheduled time is missed for 1 second or a few days. Unfortunately there is no initial state given with the compared string given at any time. Is there an other way to determ a rerunning recurring job after server restart? Skip to content. Dismiss Join GitHub today GitHub is home to over 40 million developers working together to host and review code, manage projects, and build software together. Sign up.
New issue. Jump to bottom.This release comes with great feature for long-running jobs: cancellation tokens. They are like CancellationToken class, but for background jobs. Previously, you was not able to stop a running job by using Requeue or Delete methods of the BackgroundJob class, or by clicking a button in Hangfire Monitor.
Its state was changed, but the job is still running. And running… And running… Nobody waits for it, why it is not stopped yet? Job cancellation tokens provide ThrowIfCancellationRequested method that throws OperationCanceledException if a job was canceled due to:.
To use cancellation tokens, you need to add just one parameter of type IJobCancellationToken to a target method:. To be able to test target methods, or to add the support of cancellation token to your old jobs, you can use the JobCancellationToken class:.
This release solved another problem. On some job queues Redis, SQL Server, but not MSMQ it is not possible to apply transaction just to fetch a job from a queue, hide it from another workers, and delete it on successful processing or place it back to a queue on failure or process termination. But in case of process termination, all jobs will remain in invisible state. To fight with this, there is a component on a server, who seeks invisible jobs and decides what to do with them.
Unfortunately, there is no way to determine whether a job was aborted by a process termination, or it is still working. To separate these cases, the component checks the fetching time of a job and compares it with current time. If the result is greater than InvisibilityTimeout, then we should trait the job as hanged, and return it to its queue. InvisibilityTimeout defaults to 30 minutes to be sure that the job processing was aborted.
When ASP. NET issues shutdown request and gives background jobs 30 seconds to die, some of them may be aborted by ThreadAbortException. In previous releases this lead to the fact that background job may stay in Invisible state on regular shutdown, and this sometimes increase the latency of job processing.
In this release Hangfire make an attempt to place aborted job back to the start of its queue on this exception, and it will be started again immediately after application restart on success, and after InvisibilityTimeout on failure.
When the feature of re-queueing jobs on ThreadAbortException plays together with job cancellation tokens, it means that you greatly decrease the latency of background job processing, because the probability of using InvisibilityTimeout is greatly decreased. Use job cancellation tokens where possible to ensure that your jobs are shutting down gracefully, and you greatly decrease the probability of high latencies in your background job processing.
Subscribe to receive monthly blog updates. Very low traffic, you are able to unsubscribe at any time. Very low traffic, you can unsubscribe at any time. Toggle navigation Hangfire. Home Blog Hangfire 0. Stop method invocation.
Performed automatically when ASP. NET application is shutting down. State transition — the state of the job has been changed, and it is not in the Processing state now. DeleteBackgroundJob. Requeue as well as all Monitor interface buttons lead to the job cancellation in case it is running. ThrowIfCancellationRequested ; Thread. Sleep ; Console. WriteLine "Cancellation requested, exiting TL;DR Use job cancellation tokens where possible to ensure that your jobs are shutting down gracefully, and you greatly decrease the probability of high latencies in your background job processing.
Stack Overflow for Teams is a private, secure spot for you and your coworkers to find and share information. There are now three Job 1's being processed concurrently - I don't want this. How do I prevent Job 1 being added to the queue again if it is already there? You can use DisableConcurrentExecution attribute to prevent multiple executions of a method concurrently.
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Just put this attribute above your method. The discussion is about skipping jobs that would be executed concurrently to a already running job. There is an attribute called DisableConcurrentExecution, that prevents 2 Jobs of the same type running concurrently. Don't have time to read pages upon pages of github discussions about whether or not this simple concept even exits in the framework? If you want to discard attempts to run something twice if it's already running you can always just do this note no attributes applied :.
Learn more. Hangfire - Prevent multiples of the same job being enqueued Ask Question. Asked 2 years, 9 months ago. Active 1 month ago. Viewed 10k times. A lot of work piles up and Job 1 takes 15 minutes to run. Is there Hangfire setting, or do I need to poll job statuses manually? Jaywaa Jaywaa 2 2 silver badges 9 9 bronze badges. Active Oldest Votes. Yogi Yogi 6, 2 2 gold badges 29 29 silver badges 51 51 bronze badges. Something could be wrong. What if there are custom input parameters into Job1 method?
Philipp Grathwohl Philipp Grathwohl 2, 3 3 gold badges 22 22 silver badges 33 33 bronze badges.
Though, in your case it could be best, to check if a task runs and skip accordingly. From my understanding this would prevent them from executing concurrently but they will still be queued to run. This is a step in the right direction but ideally they wouldn't be queued at all. Thanks for the answer! That's what i meant with my second sentence. I don't think it is the right way to not queue the jobs, but let them start and check if a other job is currently running an then skip it right there I realize this may not have been made clear.
This would fail when having multiple servers since statics will be server local. If you only have a single hangfire instance it could work. In order to avoid race conditions I would use if Interlocked.
By the way, Hangfire documentation also mentions that sometimes people may instead prefer their own locking mechanism - in cases where there is single server processing the jobs.Today I noticed that we had enqueued jobs, but they were not being processed.
Has anyone done something similar? It would be awesome to get to the bottom of why it stops working. If I then stop the site using the IIS Express controller in my task bar as opposed to just cancelling the debug session in VSand restart, the subsequent Foo will begin processing but the second Foo remains in the queue. I struggled with Hangfire for a full work day yesterday,and am almost ready to throw the towel in and use a different solution!
Please help! This is due to the fact that Hangfire Server was killed, I call this ungraceful shutdown. When a worker picks up a job, it marks it as invisible for other workers to prevent parallel processing of a same job. However, to handle ungraceful shutdown and to be able to process aborted jobs, we are using Invisibility timeout that defaults to 30 minutes. So, after this timeout, your job will be re-queued. Toggle navigation Hangfire. Jobs stuck in enqueued state bug?
Might it be that the jobs have been run but the database has not been updated? Hi everyone, we hit a similar issue on one of our test servers. Our setup is as follows: B2 Azure Website 2 cores, 3. Web retired SQL Database.
Hangfire is using SQL Server storage. This is a really timely thread because I was about to add a question for the same reason. Our setup is similar to nirinchev : hangfire with SQL server storage.Course Preview: Simplified .NET Background Jobs with Hangfire
UseSqlServerStorage "Hangfire" ; config. ThrowIfCancellationRequested ; Console.Hangfire provides support for cancellation tokens for our background jobs to let them know when a shutdown request was initiated, or job performance was aborted. In the former case the job will be automatically put back to the beginning of its queue, allowing Hangfire to process it after restart.
We should use cancellation tokens as much as possible — they greatly lower the application shutdown time and the risk of the appearance of the ThreadAbortException. Starting from Hangfire 1. When creating such a background job, any CancellationToken instance can be used, it will be replaced internally just before performing a background job. Dedicated background process is watching for all the current background jobs that have a cancellation token parameter in a method and polls the storage to watch their current states.
When state change is detected or when shutdown is requested, the corresponding cancellation token is canceled. The polling delay is configurable via the BackgroundJobServerOptions. CancellationCheckInterval server option. This is the obsolete implementation of cancellation tokens.
Backward compatibility is the only reason for using this interface nowadays, so we should prefer to use CancellationToken parameters in the new logic. The interface contains the ThrowIfCancellationRequested method that throws the OperationCanceledException when cancellation was requested:.
When we want to enqueue such method call as a background job, we can pass the null value as an argument for the token parameter, or use the JobCancellationToken.
Null property to tell code readers that we are doing things right:. Hangfire takes care of passing a proper non-null instance of IJobCancellationToken during the job execution at runtime.
Please use Hangfire Forum for long questions or questions with source code. Delay TimeSpan. LongRunningMethod CancellationToken.
None. ThrowIfCancellationRequested ; Thread. Sleep TimeSpan. Null. The implementation is resolved automatically Hangfire takes care of passing a proper non-null instance of IJobCancellationToken during the job execution at runtime.
Change your preferences any time. Stack Overflow for Teams is a private, secure spot for you and your coworkers to find and share information. I have a Hangfire with SqlServer for persistence job which query some data from database. The data is not so large, only like 1, rows. So the job executes in seconds.
However, I get "Thread was being aborted" exception when generating Excel or sending mail. I guess there is something like Timeout, which kills the thread. Does anyone have the same issue? Any solutions? Actually I made a stupid mistake in here. Before I generate an Excel, I have a template.
The template will be copied to HttpRuntime. BinDirectory first I am trying to avoid the resource conflict. This HttpRuntime. BinDirectory is the root cause which makes the thread aborted. That will abort current running threads. Learn more.
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Asked 1 year, 8 months ago. Active 1 year, 8 months ago.
Viewed times. Vincent Shen. Vincent Shen Vincent Shen 65 1 1 silver badge 6 6 bronze badges. Active Oldest Votes. Sign up or log in Sign up using Google. Sign up using Facebook. Sign up using Email and Password. Post as a guest Name.