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Delay set cache after response, make cache static

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Uses `tokio::spawn` to delay updating the cache while the server responds to the request.

Because `tokio::spawn` can run on another thread, references need to be static, so I initialized the cache in `lazy_static`.
This commit is contained in:
Tyler Hallada
2020-11-07 00:28:54 -05:00
parent 0980d01640
commit a53eeffb0f
11 changed files with 177 additions and 141 deletions
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36
src/handlers/shop.rs
View File

@@ -5,6 +5,7 @@ use uuid::Uuid;
use warp::reply::{with_header, with_status};
use warp::{Rejection, Reply};
use crate::caches::CACHES;
use crate::models::{InteriorRefList, ListParams, MerchandiseList, Shop};
use crate::problem::reject_anyhow;
use crate::Environment;
@@ -12,8 +13,7 @@ use crate::Environment;
use super::{authenticate, check_etag, JsonWithETag};
pub async fn get(id: i32, etag: Option<String>, env: Environment) -> Result<impl Reply, Rejection> {
let response = env
.caches
let response = CACHES
.shop
.get_response(id, || async {
let shop = Shop::get(&env.db, id).await?;
@@ -30,8 +30,7 @@ pub async fn list(
etag: Option<String>,
env: Environment,
) -> Result<impl Reply, Rejection> {
let response = env
.caches
let response = CACHES
.list_shops
.get_response(list_params.clone(), || async {
let shops = Shop::list(&env.db, &list_params).await?;
@@ -90,7 +89,9 @@ pub async fn create(
let reply = JsonWithETag::from_serializable(&saved_shop).map_err(reject_anyhow)?;
let reply = with_header(reply, "Location", url.as_str());
let reply = with_status(reply, StatusCode::CREATED);
env.caches.list_shops.clear().await;
tokio::spawn(async move {
CACHES.list_shops.clear().await;
});
Ok(reply)
}
@@ -122,8 +123,10 @@ pub async fn update(
let reply = JsonWithETag::from_serializable(&updated_shop).map_err(reject_anyhow)?;
let reply = with_header(reply, "Location", url.as_str());
let reply = with_status(reply, StatusCode::CREATED);
env.caches.shop.delete_response(id).await;
env.caches.list_shops.clear().await;
tokio::spawn(async move {
CACHES.shop.delete_response(id).await;
CACHES.list_shops.clear().await;
});
Ok(reply)
}
@@ -136,15 +139,14 @@ pub async fn delete(
Shop::delete(&env.db, owner_id, id)
.await
.map_err(reject_anyhow)?;
env.caches.shop.delete_response(id).await;
env.caches.list_shops.clear().await;
env.caches
.interior_ref_list_by_shop_id
.delete_response(id)
.await;
env.caches
.merchandise_list_by_shop_id
.delete_response(id)
.await;
tokio::spawn(async move {
CACHES.shop.delete_response(id).await;
CACHES.list_shops.clear().await;
CACHES
.interior_ref_list_by_shop_id
.delete_response(id)
.await;
CACHES.merchandise_list_by_shop_id.delete_response(id).await;
});
Ok(StatusCode::NO_CONTENT)
}