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Speed up GET /api/v3/site endpoint (#4245)

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* Make db queries for GET /api/v3/site in parallel (ref #4244)

* Cache site response

* machete

* Use try_join_with_pool macro

* machete

* taplo

* ttl 1s
This commit is contained in:
Nutomic 2023-12-12 17:56:39 +01:00 committed by GitHub
parent e0e74e50ae
commit 30d58865b8
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GPG key ID: 4AEE18F83AFDEB23
4 changed files with 65 additions and 47 deletions
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4
Cargo.lock generated
View file

@ -2589,12 +2589,16 @@ version = "0.19.0-rc.13"
dependencies = [
"activitypub_federation",
"actix-web",
"anyhow",
"bcrypt",
"futures",
"lemmy_api_common",
"lemmy_db_schema",
"lemmy_db_views",
"lemmy_db_views_actor",
"lemmy_utils",
"moka",
"once_cell",
"tracing",
"url",
"uuid",

9
crates/api_crud/Cargo.toml
View file

@ -22,5 +22,12 @@ bcrypt = { workspace = true }
actix-web = { workspace = true }
tracing = { workspace = true }
url = { workspace = true }
webmention = "0.5.0"
futures.workspace = true
uuid = { workspace = true }
moka.workspace = true
once_cell.workspace = true
anyhow.workspace = true
webmention = "0.5.0"
[package.metadata.cargo-machete]
ignored = ["futures"]

93
crates/api_crud/src/site/read.rs
View file

@ -21,45 +21,67 @@ use lemmy_utils::{
error::{LemmyError, LemmyErrorExt, LemmyErrorType},
version,
};
use moka::future::Cache;
use once_cell::sync::Lazy;
use std::time::Duration;
#[tracing::instrument(skip(context))]
pub async fn get_site(
local_user_view: Option<LocalUserView>,
context: Data<LemmyContext>,
) -> Result<Json<GetSiteResponse>, LemmyError> {
static CACHE: Lazy<Cache<(), GetSiteResponse>> = Lazy::new(|| {
Cache::builder()
.max_capacity(1)
.time_to_live(Duration::from_secs(1))
.build()
});
// This data is independent from the user account so we can cache it across requests
let mut site_response = CACHE
.try_get_with::<_, LemmyError>((), async {
let site_view = SiteView::read_local(&mut context.pool()).await?;
let admins = PersonView::admins(&mut context.pool()).await?;
let all_languages = Language::read_all(&mut context.pool()).await?;
let discussion_languages = SiteLanguage::read_local_raw(&mut context.pool()).await?;
let taglines = Tagline::get_all(&mut context.pool(), site_view.local_site.id).await?;
let custom_emojis =
CustomEmojiView::get_all(&mut context.pool(), site_view.local_site.id).await?;
Ok(GetSiteResponse {
site_view,
admins,
version: version::VERSION.to_string(),
my_user: None,
all_languages,
discussion_languages,
taglines,
custom_emojis,
})
})
.await
.map_err(|e| anyhow::anyhow!("Failed to construct site response: {e}"))?;
// Build the local user
let my_user = if let Some(local_user_view) = local_user_view {
// Build the local user with parallel queries and add it to site response
site_response.my_user = if let Some(local_user_view) = local_user_view {
let person_id = local_user_view.person.id;
let local_user_id = local_user_view.local_user.id;
let pool = &mut context.pool();
let follows = CommunityFollowerView::for_person(&mut context.pool(), person_id)
.await
.with_lemmy_type(LemmyErrorType::SystemErrLogin)?;
let person_id = local_user_view.person.id;
let community_blocks = CommunityBlockView::for_person(&mut context.pool(), person_id)
.await
.with_lemmy_type(LemmyErrorType::SystemErrLogin)?;
let instance_blocks = InstanceBlockView::for_person(&mut context.pool(), person_id)
.await
.with_lemmy_type(LemmyErrorType::SystemErrLogin)?;
let person_id = local_user_view.person.id;
let person_blocks = PersonBlockView::for_person(&mut context.pool(), person_id)
.await
.with_lemmy_type(LemmyErrorType::SystemErrLogin)?;
let moderates = CommunityModeratorView::for_person(&mut context.pool(), person_id)
.await
.with_lemmy_type(LemmyErrorType::SystemErrLogin)?;
let discussion_languages = LocalUserLanguage::read(&mut context.pool(), local_user_id)
.await
let (
follows,
community_blocks,
instance_blocks,
person_blocks,
moderates,
discussion_languages,
) = lemmy_db_schema::try_join_with_pool!(pool => (
|pool| CommunityFollowerView::for_person(pool, person_id),
|pool| CommunityBlockView::for_person(pool, person_id),
|pool| InstanceBlockView::for_person(pool, person_id),
|pool| PersonBlockView::for_person(pool, person_id),
|pool| CommunityModeratorView::for_person(pool, person_id),
|pool| LocalUserLanguage::read(pool, local_user_id)
))
.with_lemmy_type(LemmyErrorType::SystemErrLogin)?;
Some(MyUserInfo {
@ -75,20 +97,5 @@ pub async fn get_site(
None
};
let all_languages = Language::read_all(&mut context.pool()).await?;
let discussion_languages = SiteLanguage::read_local_raw(&mut context.pool()).await?;
let taglines = Tagline::get_all(&mut context.pool(), site_view.local_site.id).await?;
let custom_emojis =
CustomEmojiView::get_all(&mut context.pool(), site_view.local_site.id).await?;
Ok(Json(GetSiteResponse {
site_view,
admins,
version: version::VERSION.to_string(),
my_user,
all_languages,
discussion_languages,
taglines,
custom_emojis,
}))
Ok(Json(site_response))
}

2
crates/utils/translations

@ -1 +1 @@
Subproject commit aa9438c4930deb23ae0dc54a061ed4b0b3824582
Subproject commit b3343aef72e5a7e5df34cf328b910ed798027270