Method decrement

src/utils/database.js:115–126

(key, amount = 1)

    }

    async decrement(key, amount = 1) {
        if (this.useFallback) {
            logger.debug(`[DEGRADED] Decrementing in memory: ${key}`);
        }
        if (this.db.decrement) {
            return this.db.decrement(key, amount);
        }
        const current = await this.db.get(key, 0);
        const newValue = current - amount;
        await this.db.set(key, newValue);
        return newValue;
    }

    isDegraded() {
        return this.useFallback;