Struct ReadOnlyDatabase 

pub struct ReadOnlyDatabase { /* private fields */ }

A redb database opened in read-only mode

Use Self::begin_read to get a ReadTransaction object that can be used to read from the database

Multiple processes may open a ReadOnlyDatabase, but it may not be opened concurrently with a Database.

Examples

Basic usage:

use redb::*;
const TABLE: TableDefinition<u64, u64> = TableDefinition::new("my_data");

let db = Database::create(filename)?;
let txn = db.begin_write()?;
{
    let mut table = txn.open_table(TABLE)?;
    table.insert(&0, &0)?;
}
txn.commit()?;
drop(db);

let db = ReadOnlyDatabase::open(filename)?;
let txn = db.begin_read()?;
{
    let mut table = txn.open_table(TABLE)?;
    println!("{}", table.get(&0)?.unwrap().value());
}

Implementations

impl ReadOnlyDatabase

pub fn open(path: impl AsRef<Path>) -> Result<ReadOnlyDatabase, DatabaseError>

Opens an existing redb database.

Trait Implementations

impl ReadableDatabase for ReadOnlyDatabase

fn begin_read(&self) -> Result<ReadTransaction, TransactionError>

Begins a read transaction

fn cache_stats(&self) -> CacheStats

Information regarding the usage of the in-memory cache