During March 2025, blp@cs.stanford.edu developed Bloom filter persistence for the feldera/feldera repository, enabling Bloom filters to be written to and read from layer files. This work involved implementing serialization and file I/O logic in Rust, ensuring that Bloom filter data structures persist across system restarts and maintain state when fault tolerance is enabled. By integrating these changes into the system programming layer, blp addressed the challenge of preserving filter information, which reduces reinitialization overhead and supports consistent query behavior. The feature enhanced data integrity and startup reliability for FT workloads, demonstrating depth in performance optimization and persistence strategies.