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doc: link to inmemorylayer

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This commit is contained in:
Joonas Koivunen
2023-08-28 14:03:33 +03:00
parent 090f9a5a80
commit 6ff324a12d
1 changed files with 4 additions and 1 deletions
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5
pageserver/src/tenant/storage_layer/layer.rs
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@@ -29,7 +29,8 @@ use super::{
/// There are two kinds of layers, in-memory and on-disk layers. In-memory
/// layers are used to ingest incoming WAL, and provide fast access to the
/// recent page versions. On-disk layers are stored as files on disk, and are
/// immutable. This type represents the on-disk kind.
/// immutable. This type represents the on-disk kind while in-memory kind are represented by
/// [`InMemoryLayer`].
///
/// Furthermore, there are two kinds of on-disk layers: delta and image layers.
/// A delta layer contains all modifications within a range of LSNs and keys.
@@ -37,6 +38,8 @@ use super::{
/// LSN.
///
/// This type models the on-disk layers, which can be evicted and on-demand downloaded.
///
/// [`InMemoryLayer`]: inmemory_layer::InMemoryLayer
#[derive(Clone)]
pub(crate) struct Layer(Arc<LayerInner>);