public static void ConfigureHangfireWithMongoStorage( this IGlobalConfiguration configuration, string connectionString) { configuration.SetDataCompatibilityLevel(CompatibilityLevel.Version_170) .UseSimpleAssemblyNameTypeSerializer() .UseRecommendedSerializerSettings(); configuration.UseMongoStorage(connectionString, new MongoStorageOptions { // https://github.com/sergeyzwezdin/Hangfire.Mongo#migration // be careful with migration strategy when updating Hangfire.Mongo package // Note: migration from first to the last version across a few running instances of Scheduler and API can throw exception MigrationOptions = new MongoMigrationOptions { MigrationStrategy = new MigrateMongoMigrationStrategy(), BackupStrategy = new CollectionMongoBackupStrategy() }, CheckConnection = true, // set to Watch for envs with replica sets CheckQueuedJobsStrategy = CheckQueuedJobsStrategy.TailNotificationsCollection }); }