Maintenance release with the new AutomaticRetryAttribute.ExceptOn property to skip retries for specific exceptions, improved loopback address detection, fixed localization-related issues, fixed build failure with the build.bat command on first restore and decreased pressure on Garbage Collector.

Hangfire.Core

• Added – New AutomaticRetryAttribute.ExceptOn property to skip retries for specific exceptions.
• Changed – Refactor filters pipeline to use less LINQ magic and fewer allocations.
• Changed – Use GetCultureInfo instead of creating an instance in the CaptureCultureAttribute filter.
• Changed – Cache some immutable data to avoid extra allocations.
• Fixed – Improve loopback address detection (by @meziantou).
• Fixed – Reformulate misleading error messages regarding retry timings (by @RGFuaWVs).
• Fixed – Problem with missing localizations in the previous version.
• Fixed – Don’t hide exception details on Failed Jobs page when the exception message is empty.
• Fixed – Problems with the first restore when using the build.bat command.
• Fixed – Better display of canceled recurring jobs in dashboard.
• Fixed – Less overall allocations with using static delegates and struct-based iterators.
• Fixed – Improve precision of some diagnostic messages in the wait protection logic.
• Fixed – Make all private and internal classes sealed to improve code consistency.
• Fixed – Less overall pressure on garbage collector.

Hangfire.SqlServer

• Changed – Use query template caching based on schema name to avoid excessive string allocations.
• Changed – Use static callbacks almost anywhere to avoid unnecessary delegate allocations.
• Changed – Use QuerySingle* or ReadSingle* where possible to avoid allocating lists.
• Changed – Unify DbCommand and DbParameter creation logic to improve code consistency.