Hangfire.SqlServer 1.6.17

http://hangfire.io/blog/ 1.6.17 • Added – `SqlServerStorageOptions.CommandBatchMaxTimeout` parameter to enable batching in transactions. • Fixed – Timeout exceptions when there are a lot of large concurrent transactions by using the new batching method. • Fixed – Distributed locks are safe now even in very unreliable networks and after network blips. • Performance – Greatly decreased the number of connections required to process background jobs. • Performance – Significantly decrease the number of roundtrips required to commit a transaction. 1.6.16 • Fixed – Lower the number of requests, when trying to acquire a distributed lock. • Fixed – Problems with continuations and batch continuations, when using existing `SqlConnection` instance. • Fixed – Distributed locks were silently released, when passing explicit closed connection to a storage. • Fixed – `KeyNotFoundException` errors on various dashboard pages don't appear anymore (by @benjymous). • Fixed – "Cannot release the application lock because it is not currently held" exceptions, when connection was closed. • Fixed – Allow to use zero timeout for SQL Server-based distributed locks. 1.6.15 • Fixed – Timeout exceptions that's caused by SQL Server's thread pool starvation, caused by sp_getapplock. • Fixed – Antecedent background job is constantly failing, when its continuation hasn't been fully created. 1.6.14 • Added – `SqlServerStorageOptions.SlidingInvisibilityTimeout` to fetch jobs without using transaction. • Fixed – Transaction log is full due to 'ACTIVE_TRANSACTION' by enabling to use new non-transactional fetch. • Fixed – `SqlServerJobQueueMonitoringApi` can't cause READ UNCOMMITTED isolation level to leak on SQL Server 2012 or earlier. • Fixed – Add missing `SqlServerStorage(DbConnection, SqlServerStorageOptions)` constructor. 1.6.13 • Fixed – Don't hide errors occurred while running SQL migrations. • Fixed – `KeyNotFoundException` when accessing Deleted Jobs page in Dashboard. • Fixed – `SqlServerDistributedLock` leaks connections, when lock acquisition is failed. 1.6.9 • Fixed – `TimeoutException` on large arguments or large batches via `SqlServerOptions.CommandTimeout`. 1.6.8 • Fixed – Use `long` where possible instead of `int` for background job identifiers, full support will be in 1.7.0. 1.6.7 • Fixed – Validation added to avoid "An invalid application lock time-out" exceptions (by t0mburton). 1.6.6 • Fixed – SqlServerJobQueue class doesn't use obsolete InvisibilityTimeout parameter anymore. 1.6.5 • Fixed – Different timeout issues after making performance optimizations. • Fixed – SQL timeouts while getting a connection, when using default settings and >= 8 CPU cores. • Fixed – ExpirationManager is bloated by SqlError instances, when there are a lot of messages from server. • Fixed – Counters query returned inconsistent results during CountersAggregator executions. • Performance – Added missing NOLOCK hint for monitoring queries when using SqlServer-based queues. • Performance – ExpirationManager is forced to use index seek operations for cascade deletions. • Performance – CountersAggregator now uses clustered index scan to issue less logical reads. • Performance – Paging queries in dashboard now use CTEs to utilize less logical reads. 1.6.4 • Fixed – `SqlConnection` object leaks when using nested distributed locks (in batches and continuations). 1.6.3 • Fixed – Prevent `ExpirationManager`'s command from timing out, when there are a lot of records. • Fixed – `CountersAggregator` issue introduced in 1.6.2, that causes slow record aggregation. • Fixed – Add `XLOCK` hint for `CountersAggregator` query to prevent deadlocks on lock escalation. 1.6.2 • Changed – `JobExpirationCheckInterval` property value now defaults to 30 minutes. • Fixed – Excessive blocking when expiring records in `State` and `JobParameters` tables. • Fixed – Migration script `Install.sql` was deadlocked by itself, leading to errors on startup. 1.6.0 • Added – .NET Core support for Hangfire.Core and Hangfire.SqlServer packages (`netstandard1.3` target). • Added – Zero latency processing when client and server reside in the same process (by @bgurmendi). • Changed – `SqlServerStorage` class constructor now takes `DbConnection` instances (by @tystol). • Changed – `SqlServerObjectsInstaller` class is public now (by @vbfox). • Changed – Update Dapper to 1.50.1 version. • Fixed – Drop constraints on Server.Id prior to altering it to avoid conflicts.