Struct TableStats 

pub struct TableStats {
    pub table_name: String,
    pub total_queries: u64,
    pub by_access_pattern: HashMap<AccessPattern, u64>,
    pub by_workload: HashMap<WorkloadType, u64>,
    pub avg_latency_us: u64,
    pub p99_latency_us: u64,
    pub shard_hit_rate: f64,
    pub cache_hit_rate: f64,
    pub last_query_time: Option<Instant>,
}

Statistics for a specific table

Fields

table_name: String

Table name

total_queries: u64

Total queries routed

by_access_pattern: HashMap<AccessPattern, u64>

Queries by access pattern

by_workload: HashMap<WorkloadType, u64>

Queries by workload type

avg_latency_us: u64

Average latency in microseconds

p99_latency_us: u64

P99 latency in microseconds

shard_hit_rate: f64

Shard hit rate (queries with shard key)

cache_hit_rate: f64

Cache utilization

last_query_time: Option<Instant>

Last query time

Implementations

impl TableStats

pub fn new(table_name: &str) -> Self

Create new table stats

pub fn record_query( &mut self, pattern: AccessPattern, workload: WorkloadType, latency_us: u64, )

Record a query

Trait Implementations

impl Clone for TableStats

fn clone(&self) -> TableStats

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for TableStats

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

Formats the value using the given formatter.

impl Default for TableStats

fn default() -> TableStats

Returns the “default value” for a type.