315 lines
9.1 KiB
Rust
315 lines
9.1 KiB
Rust
#[cfg(feature = "server")]
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use moka::future::Cache;
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#[cfg(feature = "server")]
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use std::sync::LazyLock;
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#[cfg(feature = "server")]
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use std::time::Duration;
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#[cfg(feature = "server")]
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use crate::models::post::{Post, PostStats, Tag};
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// ============================================================================
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// Cache TTL Configuration
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// ============================================================================
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#[cfg(feature = "server")]
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const TTL_POST_LIST: Duration = Duration::from_secs(60);
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#[cfg(feature = "server")]
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const TTL_TAG_LIST: Duration = Duration::from_secs(300);
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#[cfg(feature = "server")]
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const TTL_SINGLE_POST: Duration = Duration::from_secs(600);
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#[cfg(feature = "server")]
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const TTL_POST_STATS: Duration = Duration::from_secs(60);
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#[cfg(feature = "server")]
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const TTL_TAG_POSTS: Duration = Duration::from_secs(120);
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// ============================================================================
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// Cache Key Types
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// ============================================================================
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#[cfg(feature = "server")]
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#[derive(Debug, Clone, Hash, Eq, PartialEq)]
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pub enum CacheKey {
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PublishedPosts { page: i32, per_page: i32 },
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AllTags,
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PostBySlug(String),
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PostsByTag(String),
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PostStats,
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}
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// ============================================================================
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// Cache Instances
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// ============================================================================
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#[cfg(feature = "server")]
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pub type PostListCache = Cache<CacheKey, (Vec<Post>, i64)>;
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#[cfg(feature = "server")]
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pub type TagListCache = Cache<CacheKey, Vec<Tag>>;
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#[cfg(feature = "server")]
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pub type SinglePostCache = Cache<CacheKey, Option<Post>>;
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#[cfg(feature = "server")]
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pub type PostStatsCache = Cache<CacheKey, PostStats>;
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#[cfg(feature = "server")]
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static POST_LIST_CACHE: LazyLock<PostListCache> = LazyLock::new(|| {
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Cache::builder()
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.max_capacity(100)
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.time_to_live(TTL_POST_LIST)
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.build()
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});
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#[cfg(feature = "server")]
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static TAG_LIST_CACHE: LazyLock<TagListCache> = LazyLock::new(|| {
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Cache::builder()
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.max_capacity(50)
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.time_to_live(TTL_TAG_LIST)
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.build()
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});
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#[cfg(feature = "server")]
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static SINGLE_POST_CACHE: LazyLock<SinglePostCache> = LazyLock::new(|| {
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Cache::builder()
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.max_capacity(200)
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.time_to_live(TTL_SINGLE_POST)
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.build()
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});
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#[cfg(feature = "server")]
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static POST_STATS_CACHE: LazyLock<PostStatsCache> = LazyLock::new(|| {
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Cache::builder()
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.max_capacity(10)
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.time_to_live(TTL_POST_STATS)
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.build()
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});
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#[cfg(feature = "server")]
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static TAG_POSTS_CACHE: LazyLock<PostListCache> = LazyLock::new(|| {
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Cache::builder()
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.max_capacity(100)
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.time_to_live(TTL_TAG_POSTS)
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.build()
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});
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// ============================================================================
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// Public Cache API
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// ============================================================================
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#[cfg(feature = "server")]
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pub async fn get_post_list(key: &CacheKey) -> Option<(Vec<Post>, i64)> {
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POST_LIST_CACHE.get(key).await
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}
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#[cfg(feature = "server")]
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pub async fn set_post_list(key: &CacheKey, posts: Vec<Post>, total: i64) {
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let _ = POST_LIST_CACHE.insert(key.clone(), (posts, total)).await;
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}
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#[cfg(feature = "server")]
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pub async fn get_tag_list() -> Option<Vec<Tag>> {
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TAG_LIST_CACHE.get(&CacheKey::AllTags).await
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}
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#[cfg(feature = "server")]
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pub async fn set_tag_list(tags: Vec<Tag>) {
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let _ = TAG_LIST_CACHE.insert(CacheKey::AllTags, tags).await;
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}
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#[cfg(feature = "server")]
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pub async fn get_post_by_slug(slug: &str) -> Option<Option<Post>> {
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SINGLE_POST_CACHE
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.get(&CacheKey::PostBySlug(slug.to_string()))
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.await
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}
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#[cfg(feature = "server")]
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pub async fn set_post_by_slug(slug: &str, post: Option<Post>) {
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let _ = SINGLE_POST_CACHE
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.insert(CacheKey::PostBySlug(slug.to_string()), post)
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.await;
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}
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#[cfg(feature = "server")]
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pub async fn get_posts_by_tag(tag: &str) -> Option<(Vec<Post>, i64)> {
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TAG_POSTS_CACHE
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.get(&CacheKey::PostsByTag(tag.to_string()))
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.await
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}
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#[cfg(feature = "server")]
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pub async fn set_posts_by_tag(tag: &str, posts: Vec<Post>, total: i64) {
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let _ = TAG_POSTS_CACHE
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.insert(CacheKey::PostsByTag(tag.to_string()), (posts, total))
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.await;
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}
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#[cfg(feature = "server")]
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pub async fn get_post_stats() -> Option<PostStats> {
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POST_STATS_CACHE.get(&CacheKey::PostStats).await
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}
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#[cfg(feature = "server")]
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pub async fn set_post_stats(stats: PostStats) {
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let _ = POST_STATS_CACHE.insert(CacheKey::PostStats, stats).await;
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}
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// ============================================================================
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// Cache Invalidation
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// ============================================================================
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#[cfg(feature = "server")]
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pub fn invalidate_post_lists() {
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POST_LIST_CACHE.invalidate_all();
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}
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#[cfg(feature = "server")]
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pub fn invalidate_all_tags() {
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TAG_LIST_CACHE.invalidate_all();
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}
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#[cfg(feature = "server")]
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pub async fn invalidate_post_by_slug(slug: &str) {
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SINGLE_POST_CACHE
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.invalidate(&CacheKey::PostBySlug(slug.to_string()))
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.await;
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}
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#[cfg(feature = "server")]
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pub async fn invalidate_posts_by_tag(tag: &str) {
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TAG_POSTS_CACHE
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.invalidate(&CacheKey::PostsByTag(tag.to_string()))
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.await;
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}
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#[cfg(feature = "server")]
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pub fn invalidate_post_stats() {
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POST_STATS_CACHE.invalidate_all();
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}
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#[cfg(feature = "server")]
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pub fn invalidate_all_post_caches() {
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POST_LIST_CACHE.invalidate_all();
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TAG_LIST_CACHE.invalidate_all();
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SINGLE_POST_CACHE.invalidate_all();
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POST_STATS_CACHE.invalidate_all();
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TAG_POSTS_CACHE.invalidate_all();
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}
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#[cfg(all(test, feature = "server"))]
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mod tests {
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use super::*;
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use crate::models::post::PostStatus;
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#[test]
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fn cache_key_equality() {
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let k1 = CacheKey::PublishedPosts { page: 1, per_page: 10 };
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let k2 = CacheKey::PublishedPosts { page: 1, per_page: 10 };
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let k3 = CacheKey::PublishedPosts { page: 2, per_page: 10 };
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assert_eq!(k1, k2);
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assert_ne!(k1, k3);
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}
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#[tokio::test]
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async fn post_list_cache_roundtrip() {
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let key = CacheKey::PublishedPosts { page: 999, per_page: 99 };
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let posts = vec![];
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set_post_list(&key, posts.clone(), 0).await;
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let cached = get_post_list(&key).await;
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assert!(cached.is_some());
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let (cached_posts, cached_total) = cached.unwrap();
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assert_eq!(cached_posts.len(), 0);
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assert_eq!(cached_total, 0);
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}
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#[tokio::test]
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async fn tag_list_cache_roundtrip() {
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let tags = vec![Tag { id: 1, name: "rust".to_string(), post_count: 5 }];
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set_tag_list(tags.clone()).await;
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let cached = get_tag_list().await;
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assert!(cached.is_some());
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assert_eq!(cached.unwrap()[0].name, "rust");
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}
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#[tokio::test]
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async fn single_post_cache_roundtrip() {
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let post = Some(Post {
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id: 1,
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author_id: 1,
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title: "Test".to_string(),
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slug: "test".to_string(),
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summary: None,
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content_md: "content".to_string(),
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content_html: None,
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status: PostStatus::Published,
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published_at: None,
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created_at: chrono::Utc::now(),
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updated_at: chrono::Utc::now(),
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tags: vec![],
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cover_image: None,
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reading_time: 1,
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word_count: 10,
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toc_html: None,
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prev_post: None,
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next_post: None,
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});
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set_post_by_slug("test", post.clone()).await;
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let cached = get_post_by_slug("test").await;
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assert!(cached.is_some());
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assert_eq!(cached.unwrap().unwrap().title, "Test");
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}
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#[tokio::test]
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async fn post_stats_cache_roundtrip() {
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let stats = PostStats { total: 10, drafts: 3, published: 7 };
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set_post_stats(stats.clone()).await;
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let cached = get_post_stats().await;
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assert!(cached.is_some());
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assert_eq!(cached.unwrap().total, 10);
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}
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#[tokio::test]
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async fn cache_invalidation_works() {
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let post = Some(Post {
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id: 42,
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author_id: 1,
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title: "Invalidation Test".to_string(),
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slug: "invalidation-test".to_string(),
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summary: None,
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content_md: "test".to_string(),
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content_html: None,
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status: PostStatus::Published,
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published_at: None,
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created_at: chrono::Utc::now(),
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updated_at: chrono::Utc::now(),
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tags: vec![],
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cover_image: None,
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reading_time: 1,
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word_count: 4,
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toc_html: None,
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prev_post: None,
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next_post: None,
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});
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set_post_by_slug("invalidation-test", post.clone()).await;
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let cached_before = get_post_by_slug("invalidation-test").await;
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assert!(cached_before.is_some());
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invalidate_post_by_slug("invalidation-test").await;
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let cached_after = get_post_by_slug("invalidation-test").await;
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assert!(cached_after.is_none());
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}
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}
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