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refactor(cache): remove unused per-post comment count cache

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xfy 2026-06-17 11:49:10 +08:00
parent 07cb0a5b0d
commit d1c9cea683
2 changed files with 1 additions and 65 deletions
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1
docs/superpowers/plans/2026-06-11-comment-localstorage.md
View File

@ -73,7 +73,6 @@ Replace `create.rs:190-221` with:
let avatar_url = crate::api::comments::helpers::gravatar_url(&author_email);
cache::invalidate_comments_by_post(post_id).await;
cache::invalidate_comment_count(post_id).await;
Ok(CommentResponse {
success: true,

65
src/cache.rs
View File

@ -44,10 +44,6 @@ const TTL_TAG_POSTS: Duration = Duration::from_secs(120);
#[cfg(feature = "server")]
const TTL_COMMENTS: Duration = Duration::from_secs(60);
/// 评论数量缓存 TTL：60 秒。
#[cfg(feature = "server")]
const TTL_COMMENT_COUNT: Duration = Duration::from_secs(60);
/// 待审核评论数量缓存 TTL：10 秒，因管理后台需要较实时数据。
#[cfg(feature = "server")]
const TTL_PENDING_COUNT: Duration = Duration::from_secs(10);
@ -74,8 +70,6 @@ pub enum CacheKey {
PostStats,
/// 某篇文章下的评论列表。
CommentsByPost { post_id: i32 },
/// 某篇文章的评论数量。
CommentCount { post_id: i32 },
/// 待审核评论总数。
PendingCommentCount,
}
@ -149,10 +143,6 @@ static TAG_POSTS_CACHE: LazyLock<PostListCache> = LazyLock::new(|| {
#[cfg(feature = "server")]
pub type CommentListCache = Cache<CacheKey, Vec<PublicComment>>;
/// 评论数量缓存类型。
#[cfg(feature = "server")]
pub type CommentCountCache = Cache<CacheKey, i64>;
/// 全局评论列表缓存实例，最大容量 200。
#[cfg(feature = "server")]
static COMMENT_CACHE: LazyLock<CommentListCache> = LazyLock::new(|| {
@ -162,18 +152,9 @@ static COMMENT_CACHE: LazyLock<CommentListCache> = LazyLock::new(|| {
.build()
});
/// 全局评论数量缓存实例，最大容量 200。
#[cfg(feature = "server")]
static COMMENT_COUNT_CACHE: LazyLock<CommentCountCache> = LazyLock::new(|| {
Cache::builder()
.max_capacity(200)
.time_to_live(TTL_COMMENT_COUNT)
.build()
});
/// 全局待审核评论数量缓存实例，最大容量 10。
#[cfg(feature = "server")]
static PENDING_COUNT_CACHE: LazyLock<CommentCountCache> = LazyLock::new(|| {
static PENDING_COUNT_CACHE: LazyLock<Cache<CacheKey, i64>> = LazyLock::new(|| {
Cache::builder()
.max_capacity(10)
.time_to_live(TTL_PENDING_COUNT)
@ -333,22 +314,6 @@ pub async fn set_comments_by_post(post_id: i32, comments: Vec<PublicComment>) {
.await;
}
/// 按文章主键读取评论数量缓存。
#[cfg(feature = "server")]
pub async fn get_comment_count(post_id: i32) -> Option<i64> {
COMMENT_COUNT_CACHE
.get(&CacheKey::CommentCount { post_id })
.await
}
/// 按文章主键写入评论数量缓存。
#[cfg(feature = "server")]
pub async fn set_comment_count(post_id: i32, count: i64) {
let _ = COMMENT_COUNT_CACHE
.insert(CacheKey::CommentCount { post_id }, count)
.await;
}
/// 读取待审核评论总数缓存。
#[cfg(feature = "server")]
pub async fn get_pending_count() -> Option<i64> {
@ -373,14 +338,6 @@ pub async fn invalidate_comments_by_post(post_id: i32) {
.await;
}
/// 按文章主键失效评论数量缓存。
#[cfg(feature = "server")]
pub async fn invalidate_comment_count(post_id: i32) {
COMMENT_COUNT_CACHE
.invalidate(&CacheKey::CommentCount { post_id })
.await;
}
/// 失效待审核评论总数缓存。
#[cfg(feature = "server")]
pub async fn invalidate_pending_count() {
@ -554,16 +511,6 @@ mod tests {
assert_eq!(cached.unwrap().len(), 1);
}
#[tokio::test]
#[serial]
async fn comment_count_cache_roundtrip() {
set_comment_count(42, 15).await;
let cached = get_comment_count(42).await;
assert!(cached.is_some());
assert_eq!(cached.unwrap(), 15);
}
#[tokio::test]
#[serial]
async fn pending_count_cache_roundtrip() {
@ -584,16 +531,6 @@ mod tests {
assert!(get_comments_by_post(99).await.is_none());
}
#[tokio::test]
#[serial]
async fn comment_count_invalidation() {
set_comment_count(99, 5).await;
assert!(get_comment_count(99).await.is_some());
invalidate_comment_count(99).await;
assert!(get_comment_count(99).await.is_none());
}
#[tokio::test]
#[serial]
async fn pending_count_invalidation() {