basic_store

A high performance, insert-only key/value database for SSDs.

Synopsis

template<
    class Hasher,
    class File>
class basic_store

Types

Name	Description
file_type
hash_type

Member Functions

Name	Description
appnum	Return the appnum associated with the database.
basic_store	Default constructor. Copy constructor (disallowed)
block_size	Return the block size associated with the database.
close	Close the database.
dat_path	Return the path to the data file.
fetch	Fetch a value.
insert	Insert a value.
is_open	Returns true if the database is open.
key_path	Return the path to the key file.
key_size	Return the key size associated with the database.
log_path	Return the path to the log file.
open	Open a database.
operator=	Copy assignment (disallowed)
set_burst	Set the burst size.
~basic_store	Destroy the database.

Description

To create a database first call the create free function. Then construct a basic_store and call basic_store::open on it:

error_code ec;
create<xxhasher>(
    "db.dat", "db.key", "db.log",
        1, make_salt(), 8, 4096, 0.5f, ec);
basic_store<xxhasher, native_file> db;
db.open("db.dat", "db.key", "db.log", ec);

Template Parameters

Type	Description
`Hasher`	The hash function to use. This type must meet the requirements of Hasher.
`File`	The type of File object to use. This type must meet the requirements of File.

Header

#include <nudb/basic_store.hpp>