v0.8.19 Pre-release thread

[adhami3310]

Please report any problems you encounter in this discussion thread or as separate issues on reflex-dev/reflex.

pip install 'reflex~=0.8.19a'

Schedule

2025-11-06 14:10 PT: 0.8.19a1 pre-release published for testing
2025-11-10: Planned Public release of 0.8.19

Release Notes

Reusing of state locks in redis to reduce serializing/de-serializing overhead

• ENG-8212: Redis Oplock implementation by @masenf in ENG-8212: Redis Oplock implementation #5932

Add mime_type to rx.download

• add mime_type to download by @adhami3310 in add mime_type to download #5957

Add transport="polling" for enterprise

• add polling transport option by @adhami3310 in add polling transport option #5955

Misc

• add more rules for dialog parents and children by @adhami3310 in add more rules for dialog parents and children #5945
• cache path cwd by @adhami3310 in cache path cwd #5948
• check against classvar for fast case by @adhami3310 in check against classvar for fast case #5947
• optimize _expired_computed_vars to one use of getattribute by @adhami3310 in optimize _expired_computed_vars to one use of getattribute #5946

Bugfixes

• ENG-8227: always _clean() after app.modify_state by @masenf in ENG-8227: always _clean() after app.modify_state #5949

Chores

• 0819dev by @adhami3310 in 0819dev #5944

Full Changelog: v0.8.18...release/reflex-0.8.19