Struct PartitionConfig 

pub struct PartitionConfig {
    pub shard_count: u16,
    pub segment_max_bytes: usize,
    pub use_meta: bool,
}

Configuration for partitioned tables.

This structure defines how data is distributed across shards and segments, providing control over write amplification and read performance.

Fields

shard_count: u16

Number of shards to distribute writes across

Higher values spread writes better for hot keys but increase read fanout. Must be between 1 and 65535.

segment_max_bytes: usize

Maximum size in bytes for a single segment before rolling

When a segment exceeds this size, a new segment is created. This controls write amplification - smaller segments rewrite less data but increase read overhead.

use_meta: bool

Whether to use a meta table for O(1) head segment discovery

With meta: Faster writes, additional storage overhead Without meta: Simpler, but requires scanning to find writable segment

Implementations

impl PartitionConfig

pub fn new( shard_count: u16, segment_max_bytes: usize, use_meta: bool, ) -> Result<Self>

Creates a new partition configuration with sensible defaults.

Arguments

• shard_count - Number of shards (1-65535)
• segment_max_bytes - Maximum segment size in bytes
• use_meta - Whether to use meta table

Returns

Validated configuration or error

pub fn default() -> Self

Creates a default configuration suitable for most use cases.

Trait Implementations

impl Clone for PartitionConfig

fn clone(&self) -> PartitionConfig

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for PartitionConfig

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

Formats the value using the given formatter.

impl Default for PartitionConfig

fn default() -> Self

Returns the “default value” for a type.