Struct QueryCache 

pub struct QueryCache { /* private fields */ }

A thread-safe cache for SQL queries.

Uses a simple LRU-like eviction strategy when the cache is full.

Implementations

impl QueryCache

pub fn new(max_size: usize) -> Self

Create a new query cache with the given maximum size.

pub fn insert(&self, key: impl Into<QueryKey>, sql: impl Into<String>)

Insert a query into the cache.

pub fn insert_with_params( &self, key: impl Into<QueryKey>, sql: impl Into<String>, param_count: usize, )

Insert a query with known parameter count.

pub fn get(&self, key: impl Into<QueryKey>) -> Option<String>

Get a query from the cache.

pub fn get_entry(&self, key: impl Into<QueryKey>) -> Option<CachedQuery>

Get a cached query entry (includes metadata).

pub fn get_or_insert<F>(&self, key: impl Into<QueryKey>, f: F) -> String

where F: FnOnce() -> String,

Get or compute a query.

If the query is cached, returns the cached version. Otherwise, computes it using the provided function and caches it.

pub fn contains(&self, key: impl Into<QueryKey>) -> bool

Check if a key exists in the cache.

pub fn remove(&self, key: impl Into<QueryKey>) -> Option<String>

Remove a query from the cache.

pub fn clear(&self)

Clear the entire cache.

pub fn len(&self) -> usize

Get the current number of cached queries.

pub fn is_empty(&self) -> bool

Check if the cache is empty.

pub fn max_size(&self) -> usize

Get the maximum cache size.

pub fn stats(&self) -> CacheStats

Get cache statistics.

pub fn reset_stats(&self)

Reset cache statistics.

Trait Implementations

impl Debug for QueryCache

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

Formats the value using the given formatter.

impl Default for QueryCache

fn default() -> Self

Returns the “default value” for a type.