Implement cache entry removal queue in diskCache

587c528f6de1139ca711273562095955b18e90d0

Cohee <18619528+Cohee1207@users.noreply.github.com>

src/endpoints/characters.js+36 -8 Viewed

      */
     _instance: null,
     /**
 +     * @type {NodeJS.Timeout?}
 +     * @private
 +     */
 +    _removalInterval: null,
 +    /**
 +     * Processes the removal queue.
 +     * @returns {Promise<void>}
 +     * @private
 +     */
 +    _removeCacheEntries: async function() {
 +        try {
 +            if (!useDiskCache || this.removalQueue.length === 0) {
 +                return;
 +            }
++
 +            const keys = await diskCache.instance().then(i => i.keys());
 +            for (const item of this.removalQueue) {
 +                const key = keys.find(k => k.startsWith(item));
 +                if (key) {
 +                    await diskCache.instance().then(i => i.removeItem(key));
 +                }
 +            }
 +            console.info('Removed cache entries:', this.removalQueue);
 +            this.removalQueue = [];
 +        } catch (error) {
 +            console.error('Error while removing cache entries:', error);
 +        }
 +    },
 +    /**
      * Gets the disk cache instance.
      * @returns {Promise<import('node-persist').LocalStorage>}
      */

         const cacheDir = path.join(globalThis.DATA_ROOT, '_cache', 'characters');
         this._instance = storage.create({ dir: cacheDir, ttl: false });
         await this._instance.init();
 +        this._removalInterval = setInterval(this._removeCacheEntries.bind(this), 60000);
         return this._instance;
     },
 +    /**
 +     * Queue for removal of cache entries.
 +     * @type {string[]}
 +     */
 +    removalQueue: [],
 };
 /**

+            }
+        }
         if (useDiskCache && !Buffer.isBuffer(inputFile)) {
 -            const keys = await diskCache.instance().then(i => i.keys());
 +            diskCache.removalQueue.push(inputFile);
 -            for (const key of keys) {
 -                if (key.startsWith(inputFile)) {
 -                    await diskCache.instance().then(i => i.removeItem(key));
 -                    break;
+        }
 -            }
 -        }
+-
         /**
          * Read the image, resize, and save it as a PNG into the buffer.
          * @returns {Promise<Buffer>} Image buffer