Struct Params

pub struct Params {
    pub db_path: PathBuf,
    pub max_memtable_size: usize,
    pub num_levels: usize,
    pub max_open_files: usize,
    pub max_key_block_size: usize,
    pub block_restart_interval: u32,
    pub log_level_stats: Option<String>,
    pub compaction_concurrency: usize,
    pub seek_based_compaction: Option<u32>,
}

Parameters to customize the creation of the database

Fields

db_path: PathBuf

Where in the filesystem should the database be stored?

max_memtable_size: usize

Maximum size of a memtable (keys+values), This indirectly also defines how large a value block can be

num_levels: usize

How many levels does this store have (default: 5)

max_open_files: usize

How many open files should be held in memory?

max_key_block_size: usize

Maximum number of entries in a key block

block_restart_interval: u32

How often should the full key be stored in a data block? Larger numbers result in smaller on-disk files, but seeks will be slower

log_level_stats: Option<String>

Write the size of each level to a csv file

compaction_concurrency: usize

How many concurrent compaction tasks should there be

seek_based_compaction: Option<u32>

How many seeks (per kb) before compaction is triggered?

Trait Implementations

impl Clone for Params

fn clone(&self) -> Params

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for Params

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Default for Params

fn default() -> Self

Returns the “default value” for a type.