feat: lru cache

src/routes/assets/[...path]/+server.ts

@@ -6,6 +6,9 @@ import mime from "mime-types";
 import { env } from "$env/dynamic/private";
 import { withCache } from "$lib/server/cache";
 
+const DEFAULT_TTL = 1000 * 60 * 15; // 15min
+const EXTENDED_TTL = 1000 * 60 * 60 * 24 * 7; // 1 week
+
 // Define what we are storing in the cache
 type CachedAsset = {
   buffer: ArrayBuffer;
@@ -24,6 +27,8 @@ export const GET: RequestHandler = async ({ params, url }) => {
   // 1. Create a unique cache key for this specific asset variation
   const cacheKey = `asset:${path}?w=${width ?? ""}&h=${height ?? ""}`;
 
+  const ttl = path.toString().includes("cover") ? DEFAULT_TTL : EXTENDED_TTL;
+
   try {
     // 2. Use withCache to wrap the fetching logic
     const cachedData = await withCache<CachedAsset>(
@@ -113,8 +118,7 @@ export const GET: RequestHandler = async ({ params, url }) => {
         throw lastError || new Error("Asset not found");
         // --- END OF FETCH LOGIC ---
       },
-      // Optional: Set a specific TTL for images (e.g., 1 hour instead of default 15m)
-      1000 * 60 * 60,
+      ttl,
     );
 
     // 3. Construct a fresh Response using the cached data