🚀 Improvements

• Added SchedulerBatchSize option to specify the maximum number of delayed or queued messages fetched per scheduler loop. (#1689) Thanks @yang-xiaodong
• Dashboard UI now supports deleting single or multiple messages. (#1674) Thanks @ustaserdar
• Updated MongoDB indexes to include a compound index on StatusName and ExpiresAt. (#1702) Thanks @demorgi
• Standardized broker naming and improved telemetry. (#1717) Thanks @savorboard
• Improved reliability of MongoDB lock acquisition by reducing rollback errors. (#1722) Thanks @demorgi

🐞 Bug Fixes

• Fixed a hang in Blazor applications when awaiting a commit transaction. (#1697)
• Prevented unsafe reuse of RabbitMQ message body under high concurrency by copying it into a dedicated buffer before background processing. (#1727) Thanks @otemnov

Full Changelog: https://github.com/dotnetcore/CAP/compare/v8.3.5...v8.4.0