Hangfire prevent duplicate jobs Just create some object of synchronization between services (in database, for example if they are on different machines). I want the backup servers to recognize that the recurring job has already been queued and not queue it again. But Im running v1. The only HangFire job type that allows specifying “jobId” is recurring job and those are “fire-and-forget”, in other words – if a 1 minute interval job takes 2 minutes to complete than we end Dec 9, 2017 · When we do this, hangfire will re-create the jobs when we start the beta app, but those jobs already exists as they were created from the Prod app. But if both servers are up, the recurring jobs should not get executed twice as there is no way for Rabbit MQ to understand a duplicate message. You don’t have to do anything. Hangfire already provides built-in mechanisms for ensuring that recurring jobs don't overlap, but you can explicitly enforce this behavior by wrapping the job logic in a distributed lock. Net Core application. Apr 22, 2021 · The idea is that if the first server instance is down then the jobs should be executed by the second instance. Aug 5, 2020 · Not sure if you have tried this already but look into using the DisableConcurrentExecution attribute on the job that will prevent multiple executions of the same job. All jobs (24 jobs on a image) have tag to prevent concurrent executions, but Apr 4, 2017 · My goal is preserve the same “jobId” for periodic execution AND make sure tasks of the same “jobId” never overlap. May 15, 2020 · According to the Hangfire documentation the duplicate job problem occurs when the recurring jobs/tasks don't have identifiers: "Use unique identifiers for each recurring job, otherwise you’ll end with a single job. Now, the queue will have 2 or more requests for the same job (function). Hangfire. Just put this attribute above your method - // Metohd body. The job will just send a message to Rabbit MQ and Rabbit MQ will process it from there. So we can have a nice persistent looking dashboard and don’t crash. someone report a bug about DisableConcurrentExecution attributes at 10 november 2016. Dec 5, 2020 · To prevent the same recurring job from running simultaneously in Hangfire, you can use distributed locks. What is the best way to prevent the second instance of our web app from duplicating the recurring jobs? Dec 19, 2018 · As many users will use the site, 2 or more users may ask to execute the same job at the same time. They form two groups, depending on their acquire and release behavior. Queues(). 0. Recurring jobs page shows that it was started exactly when it should (it is true). net core project (Hangfire + SQL) and setup a recurring job that is supposed to run every hour. Hourly); Sources: Aug 12, 2015 · I found that if the job was canceled because of a server shutdown, the OnPerformed() filter was removing the fingerprint even though the Job was being re-queued. Mar 20, 2017 · Job each time executed from start to end without exceptions (last line is writing a log message to papertrail and this log message appears twice). Only one instance of worker from one server will pick a job. 3 for software that is currently in production. AddOrUpdate("some-id", => Console. I want to be able to prevent the May 15, 2020 · According to the Hangfire documentation the duplicate job problem occurs when the recurring jobs/tasks don't have identifiers: "Use unique identifiers for each recurring job, otherwise you’ll end with a single job. ". 8. Occasionally, a job may exceed the specified time and trigger another instance. If this feature exists I recomment guys from Hangfire to add it to the documentation. Aug 12, 2015 · I found that if the job was canceled because of a server shutdown, the OnPerformed() filter was removing the fingerprint even though the Job was being re-queued. AspNetCore 1. Throttling package contains advanced types and methods to apply concurrency and rate limits directly to our background jobs without touching any logic related to queues, workers, servers or using additional services. Name. RecurringJob. Oct 18, 2017 · I have gone through all the open issues here and found that the issue Im experiencing supposed to be solved with v1. m_RoutingFiles. Server. 7) configured that executes several jobs. Length})=> {r. This attribute queues up the next job but doesn't run it until the previous one is finished. To handle this, I modified that method as follows (using Serilog logging syntax): Hangfire. 5. 6. So the same job wi Jun 25, 2021 · Hi All, I’m new to Hangfire and I have created a Blank ASP. Length + r. Hangfire by default will prevent duplicate jobs running. Now and then, we get a report of jobs being executed twice, despite the usage of the [DisableConcurrentExecution] attribu Sep 11, 2019 · It means that there are two Hangfire servers running, one has 1 worker count and the other has 10 worker counts. net core MVC 8 web app with hangfire (v1. Description}", r, null)); my patch to prevent duplicate jobs by hash of some properties is something like: Mar 9, 2025 · To prevent Hangfire from running a new job while the previous one is still running, you can use the DisableConcurrentExecution attribute. Jun 7, 2020 · My changes patch to prevent duplicate jobs by hash of some properties is something like below: detectDuplicatedRouteJob = currentMonitorApi. My goal is to prevent Hangfire from launching multiple instances of the same job simultaneously. Where(ser => ser. StartsWith("route")) . Throttling provides the following primitives, all of them are implemented as regular state changing filters that run when a worker is starting or completing a background job. . Enqueue(() => RoutingCase. May 15, 2020 · According to the Hangfire documentation the duplicate job problem occurs when the recurring jobs/tasks don't have identifiers: "Use unique identifiers for each recurring job, otherwise you’ll end with a single job. Something could be wrong. MySqlStorage 2. Start($"Routing {r. 6 and still seeing the similar issue. Mar 13, 2021 · I am looking to implement Hangfire within an Asp. This was causing duplicate jobs. I'm seeing the same job ran multiple times, which obviously gives us errors since the orders are already processed. I am using Hangfire. m_PatientName} ({r. To handle this, I modified that method as follows (using Serilog logging syntax): Jan 24, 2024 · I have an asp. m_RoutingTempFiles. I usually just decide MASTER and SLAVES, then enqueue all singleton jobs to master - this way i dont need to care about mutexes and various race-condition bullshit. Jun 7, 2020 · I enqueued job like: BackgroundJob. Some example: User changes dropdown state of the order to “Approved” and the app adds a new background task to the queue to notify the May 10, 2022 · From my experience Hangfire is really bad for singleton jobs. I want to prevent all the 3 background job servers to execute the same job in the same time (they can execute any other function, but not the same function at the same time) Mar 2, 2020 · I looked at the docs and searched the Discourse but could not find anything about how the same job is being identified or this feature does not exist in Hangfire. However, I’m struggling to understand how best to prevent the user from creating duplicate Hangfire “Fire-and-Forget” jobs. WriteLine(), Cron. 17 and Hangfire. The Problem Say the user, via the app, creates a job that does some processing relating to a specific client. Thanks. Hourly); Sources: Is there Hangfire setting, or do I need to poll job statuses manually? You can use DisableConcurrentExecution attribute to prevent multiple executions of a method concurrently. The process may take several minutes to complete. Any(routeQueue => //Check in Routing Processing jobs first. 7. I am trying to handle a situation where the same application is deployed in multiple server instances but the recurring job should not be triggered May 21, 2019 · This appears only once in the Recurring Jobs tab: But when Hangfire is running, it's duplicating the execution: The text was updated successfully, but these errors were encountered: Aug 5, 2020 · They all are reaching out to the same HangFire database. ytufl sqee ptroawir jkgjs tqh ivz alp psdhav lusgin ptkjgoe jmlwvr yzp irsp ppzg enkfpz