During March 2025, work focused on enhancing the feldera/feldera repository by implementing Bloom filter persistence within layer files. This feature enabled Bloom filters to be written to and read from storage, ensuring that filter data persisted across application restarts and maintained state when fault tolerance was enabled. The approach leveraged Rust for system programming, utilizing advanced data structures and file I/O techniques to optimize performance and serialization. By integrating Bloom filter persistence directly into the layer architecture, the solution reduced reinitialization overhead and improved data integrity, supporting more reliable and consistent query behavior for fault-tolerant workloads in the system.