Crate persy

Persy - Transactional Persistence Engine

Simple single file, durable, paginated, transactionan persistence engine, based on copy on write, write ahead log, two phase commit.

Example

use persy::{Persy,Config};
//...
Persy::create("./open.persy")?;
let persy = Persy::open("./open.persy",Config::new())?;
let mut tx = persy.begin()?;
persy.create_segment(&mut tx, "seg")?;
let data = vec![1;20];
persy.insert_record(&mut tx, "seg", &data)?;
let prepared = persy.prepare_commit(tx)?;
persy.commit(prepared)?;
for rec in persy.scan_records("seg")? {
    assert_eq!(rec.content[0], 20);
    //....
}

Structs

Config	Persy configuration structure.
IteratorItem	Snapshot of a record from the segment iterator
Persy	Main structure to manipolate persy storage files
RecordScanner	IntoIterator of persistent records of a segment
RecordScannerTx	IntoIterator of persistent records of a segment that include eventual in transaction changes
TransactionFinalize	prepared transaction state

Enums

PersyError
TxStrategy	Concurrent Modification Strategy for resolution of conflict on commit.

Type Definitions

PRes
PersyId	Identifier of a persistent record, can be used for read, update or delete the record
Transaction	Transaction container, it include all the changes done in a transaction.
TransactionId