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CacheLayer

alloy::providers::layers

Struct CacheLayer 

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pub struct CacheLayer { /* private fields */ }
Available on crate feature providers only.
Expand description

A provider layer that caches RPC responses and serves them on subsequent requests.

The cache is an in-memory LRU with a fixed maximum item count. Block-sensitive methods are cached only for explicit block numbers or hashes; dynamic tags such as latest and pending bypass the cache. Log queries are cached only when pinned to a block hash or a fixed numeric range. It also caches block receipts, included transactions, raw transactions, and transaction receipts; other Provider methods pass through to the inner provider.

Persistence is opt-in. Obtain a SharedCache with CacheLayer::cache before applying the layer, retain that handle, and use SharedCache::load_cache or SharedCache::save_cache. There is no automatic persistence or invalidation.

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impl CacheLayer

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pub fn new(max_items: u32) -> CacheLayer

Instantiate a new cache layer with the maximum number of items to store.

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pub const fn max_items(&self) -> u32

Returns the maximum number of items that can be stored in the cache, set at initialization.

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pub fn cache(&self) -> SharedCache

Returns the shared cache.

Trait Implementations§

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impl Clone for CacheLayer

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fn clone(&self) -> CacheLayer

Returns a duplicate of the value. Read more
1.0.0 (const: unstable) · Source§

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

Performs copy-assignment from source. Read more
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impl Debug for CacheLayer

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

Formats the value using the given formatter. Read more
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impl<P, N> ProviderLayer<P, N> for CacheLayer
where P: Provider<N>, N: Network,

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type Provider = CacheProvider<P, N>

The provider constructed by this layer.
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fn layer(&self, inner: P) -> <CacheLayer as ProviderLayer<P, N>>::Provider

Wrap the given provider in the layer’s provider.

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🔬This is a nightly-only experimental API. (clone_to_uninit)
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Note: Most layout information is completely unstable and may even differ between compilations. The only exception is types with certain repr(...) attributes. Please see the Rust Reference's “Type Layout” chapter for details on type layout guarantees.

Size: 16 bytes