Redis Entitlements Cache Layer

// Redis Entitlement Lookup (Cache-Aside Pattern)
async getPropertyEntitlements(propertyCode: string): Promise<string[]> {
  const cacheKey = `property:${propertyCode}:features`;

  // 1. Cek memory Redis (< 1ms)
  const cached = await this.redis.smembers(cacheKey);
  if (cached && cached.length > 0) {
    return cached;
  }

  // 2. Fallback baca MongoDB jika cache miss
  const property = await this.propertyModel.findOne({ code: propertyCode });
  if (!property || property.subscription.status !== 'ACTIVE') {
    return [];
  }

  // 3. Warm-up Redis cache dengan TTL 3600 detik
  await this.redis.sadd(cacheKey, ...property.subscription.features);
  await this.redis.expire(cacheKey, 3600);

  return property.subscription.features;
}