feat: add api files caching, update audioplayer ui

backend/middlewares/cache.ts

@@ -0,0 +1,42 @@
+import type { Context, Next } from "hono";
+import LRU from "../lib/lruCache";
+
+type CacheOptions = {
+  ttl?: number;
+  noCache?: boolean;
+  public?: boolean;
+  store?: boolean;
+};
+
+const caches = new LRU<string>(50);
+
+const cache = (options: CacheOptions = {}) => {
+  return (c: Context, next: Next) => {
+    const ttl = options.ttl || 3600;
+
+    const cacheControl = !options.noCache
+      ? `public, max-age=${ttl}`
+      : "no-cache";
+    c.header("Cache-Control", cacheControl);
+
+    return next();
+  };
+};
+
+cache.key = (...keys: string[]) => {
+  const key = keys.join(".");
+  const data = cache.get(key);
+  const set = (value: any, ttl: number = 3600) => cache.set(key, value, ttl);
+  return { key, data, set };
+};
+
+cache.set = (key: string, value: any, ttl: number = 3600) => {
+  caches.set(key, JSON.stringify(value), ttl);
+};
+
+cache.get = (key: string) => {
+  const data = caches.get(key);
+  return data ? JSON.parse(data) : null;
+};
+
+export default cache;