refactor(query): remove lru cache meter (#16260)

* refactor(query): remove useless meter

* refactor(query): merge cache and cache_manager

* refactor(query): remove meter

* refactor(query): remove meter

* refactor(query): remove meter

* refactor(query): remove meter

Author: zhang2014

Cargo.lock

@@ -48,7 +48,6 @@ members = [
     "src/query/sql",
     "src/query/storages/common/blocks",
     "src/query/storages/common/cache",
-    "src/query/storages/common/cache_manager",
     "src/query/storages/common/index",
     "src/query/storages/common/io",
     "src/query/storages/common/pruner",
@@ -195,7 +194,6 @@ databend-query = { path = "src/query/service" }
 databend-sqllogictests = { path = "tests/sqllogictests" }
 databend-storages-common-blocks = { path = "src/query/storages/common/blocks" }
 databend-storages-common-cache = { path = "src/query/storages/common/cache" }
-databend-storages-common-cache-manager = { path = "src/query/storages/common/cache_manager" }
 databend-storages-common-index = { path = "src/query/storages/common/index" }
 databend-storages-common-io = { path = "src/query/storages/common/io" }
 databend-storages-common-pruner = { path = "src/query/storages/common/pruner" }

Cargo.toml

@@ -11,7 +11,6 @@ doctest = false
 test = true
 
 [dependencies]
-bytes = { workspace = true }
 hashbrown = { workspace = true }
 hashlink = "0.8"
 

src/common/cache/Cargo.toml

@@ -17,10 +17,10 @@ pub mod lru;
 use std::borrow::Borrow;
 use std::hash::Hash;
 
-use crate::Meter;
+use crate::mem_sized::MemSized;
 
 /// A trait for a cache.
-pub trait Cache<K: Eq + Hash, V, M: Meter<K, V>> {
+pub trait Cache<K: Eq + Hash + MemSized, V: MemSized> {
     /// Returns a reference to the value corresponding to the given key in the cache, if
     /// any.
     fn get<Q>(&mut self, k: &Q) -> Option<&V>
@@ -44,7 +44,7 @@ pub trait Cache<K: Eq + Hash, V, M: Meter<K, V>> {
 
     /// Inserts a key-value pair into the cache. If the key already existed, the old value is
     /// returned.
-    fn put(&mut self, k: K, v: V) -> Option<V>;
+    fn insert(&mut self, k: K, v: V) -> Option<V>;
 
     /// Removes the given key from the cache and returns its corresponding value.
     fn pop<Q>(&mut self, k: &Q) -> Option<V>
@@ -67,17 +67,13 @@ pub trait Cache<K: Eq + Hash, V, M: Meter<K, V>> {
     /// Returns `true` if the cache contains no key-value pairs.
     fn is_empty(&self) -> bool;
 
-    /// Returns the maximum size of the key-value pairs the cache can hold, as measured by the
-    /// `Meter` used by the cache.
-    fn capacity(&self) -> u64;
+    /// Returns the maximum bytes size of the key-value pairs the cache can hold.
+    fn bytes_capacity(&self) -> u64;
 
-    /// Sets the size of the key-value pairs the cache can hold, as measured by the `Meter` used by
-    /// the cache.
-    fn set_capacity(&mut self, cap: u64);
+    fn items_capacity(&self) -> u64;
 
-    /// Returns the size of all the key-value pairs in the cache, as measured by the `Meter` used
-    /// by the cache.
-    fn size(&self) -> u64;
+    /// Returns the bytes size of all the key-value pairs in the cache.
+    fn bytes_size(&self) -> u64;
 
     /// Removes all key-value pairs from the cache.
     fn clear(&mut self);