export declare const ANNOTATION_CDS_TYPEORM_CONFIG = "@cds.typeorm.config";
export declare const ANNOTATION_CDS_ASSERT_UNIQUE = "@assert.unique";
export declare const MYSQL_DATE_TIME_FORMAT = "yyyy-MM-dd HH:mm:ss.u";
export declare const MYSQL_DATE_TIME_FORMAT_WO_FRACTIONS = "yyyy-MM-dd HH:mm:ss";
export declare const MYSQL_CHARSET = "utf8mb4";
export declare const MYSQL_COLLATE = "utf8mb4_unicode_ci";
export declare const TENANT_DEFAULT = "default";
/**
 * the interval between idle connection check
 */
export declare const CONNECTION_IDLE_CHECK_INTERVAL: number;
/**
 * the default maximum connections number for each tenant
 */
export declare const DEFAULT_TENANT_CONNECTION_POOL_SIZE = 20;
/**
 * connection acquire timeout
 */
export declare const DEFAULT_CONNECTION_ACQUIRE_TIMEOUT: number;
/**
 * max queue items number to avoid over consuming for memory
 */
export declare const MAX_QUEUE_SIZE = 1000;
/**
 * the default connection idle timeout, after idle, it will be disconnected after next check
 */
export declare const DEFAULT_CONNECTION_IDLE_TIMEOUT: number;
/**
 * default value to check csv record is existed or not
 */
export declare const DEFAULT_CSV_IDENTITY_CONCURRENCY = 10;
/**
 * default `max_allowed_packet` value for `cds-mysql`
 *
 * @see https://dev.mysql.com/doc/refman/8.0/en/packet-too-large.html
 */
export declare const DEFAULT_MAX_ALLOWED_PACKED_MB = 512;
export declare const MIGRATION_VERSION_PREFIX = "-- version: ";
export declare const DEFAULT_POOL_OPTIONS: Readonly<{
    min: 1;
    acquireTimeoutMillis: number;
    max: 20;
    maxWaitingClients: 1000;
    evictionRunIntervalMillis: number;
    idleTimeoutMillis: number;
    testOnBorrow: true;
}>;