var supportedHeaders = []string{
	"content-type",
	"cache-control",
	"content-language",
	"content-encoding",
	"content-disposition",
	"x-amz-storage-class",
	xhttp.AmzStorageClass,
	xhttp.AmzObjectTagging,
	"expires",
	xhttp.AmzBucketReplicationStatus,
	"X-Minio-Replication-Server-Side-Encryption-Sealed-Key",
	"X-Minio-Replication-Server-Side-Encryption-Seal-Algorithm",
	"X-Minio-Replication-Server-Side-Encryption-Iv",

	actualDNToLDAPUsernameMap := make(map[string]string)
	// External (actual) LDAP DN to internal normalized representation
	actualDNToParentUserMap := make(map[string]string)
	for _, cred := range allCreds {
		// Expired credentials don't need parent user updates.
		if cred.IsExpired() {
			continue
		}

		if !sys.LDAPConfig.IsLDAPUserDN(cred.ParentUser) {
			continue
		}

	NowFunc func() time.Time
	// DryRun generate sql without execute
	DryRun bool
	// PrepareStmt executes the given query in cached statement
	PrepareStmt bool
	// PrepareStmt cache support LRU expired,
	// default maxsize=int64 Max value and ttl=1h
	PrepareStmtMaxSize int
	PrepareStmtTTL     time.Duration

	// DisableAutomaticPing
	DisableAutomaticPing bool
	// DisableForeignKeyConstraintWhenMigrating

    /** The key of the configuration. e.g. config_id */
    String INDEX_FIELD_config_id = "index.field.config_id";

    /** The key of the configuration. e.g. expires */
    String INDEX_FIELD_EXPIRES = "index.field.expires";

    /** The key of the configuration. e.g. url */
    String INDEX_FIELD_URL = "index.field.url";

    /** The key of the configuration. e.g. doc_id */

    protected String loggerName = "fess.log.crawler.stats";

    /** Maximum number of statistics objects to cache. */
    protected long maxCacheSize = 1000;

    /** Time in milliseconds after which cache entries expire after write. */
    protected long cacheExpireAfterWrite = 10 * 60 * 1000L;

    /** Cache for storing statistics objects keyed by crawler object identifiers. */
    protected LoadingCache<String, StatsObject> statsCache;

    }
}
```

## 9. Performance Considerations

### 9.1 Memory Management
- Lease entries should be evicted based on LRU when max leases reached
- Implement periodic cleanup of expired leases

### 9.2 Thread Safety
- Use concurrent data structures for lease storage
- Minimize lock contention in hot paths
- Async handling of lease breaks

### 9.3 Network Efficiency

        // cid
        final String configId = crawlingConfig.getConfigId();
        if (configId != null) {
            putResultDataBody(dataMap, fessConfig.getIndexFieldConfigId(), configId);
        }
        //  expires
        if (documentExpires != null) {
            putResultDataBody(dataMap, fessConfig.getIndexFieldExpires(), documentExpires);
        }
        // segment

Finalmente, a identidade dos nossos heróis está protegida! 🥷

Ele também declara novamente `id: int`. Ao fazer isso, estamos fazendo um **contrato** com os clientes da API, para que eles possam sempre esperar que o `id` estará lá e será um `int` (nunca será `None`).

/// tip | Dica

código do cliente automaticamente. E se você **construir** o cliente, ele falhará caso haja qualquer **incompatibilidade** nos dados usados.

Assim, você **detectará muitos erros** muito cedo no ciclo de desenvolvimento, em vez de ter que esperar que os erros apareçam para seus usuários finais em produção e então tentar depurar onde está o problema. ✨...

}

func (ies *IAMEtcdStore) addUser(ctx context.Context, user string, userType IAMUserType, u UserIdentity, m map[string]UserIdentity) error {
	if u.Credentials.IsExpired() {
		// Delete expired identity.
		deleteKeyEtcd(ctx, ies.client, getUserIdentityPath(user, userType))
		deleteKeyEtcd(ctx, ies.client, getMappedPolicyPath(user, userType, false))
		return nil
	}
	if u.Credentials.AccessKey == "" {