Persy 0.1

This is the announcement of the release of Persy the initial step for a single file storage engine fully written in Rust.

What can be done with Persy 0.1

Presy 0.1 can be already used as a transactional storage of Vec<u8> inside a file, so as simple crash resistant data file format, or as a backend of a experimental database.

What is ready in 0.1

• Vec<u8> based record insert,update,delete and read
• Records grouping based on segments
• Create and Drop of Segment
• Transactional Record and Segment operations
• Read-Committed transaction isolation
• Two-Phase commit
• Consistency guaranteed by transaction log
• Non Transactional record scan
• Full Multithread support for record operations

What is unstable in 0.1

• Unstable Segment operations in Multithread
• Missing record scan in transaction
• Missing file lock for already open files
• API not yet finalized
• Missing public API for transaction finalize/rollback during transaction recover
• Missing addressing space reuse after record delete
• Suboptimal addressing space update