import { IDatabaseAdapter } from './IDatabaseAdapter';
/**
 * Connection pool statistics
 */
export interface IPoolStats {
    /** Total number of connections in pool */
    totalConnections: number;
    /** Number of active (in-use) connections */
    activeConnections: number;
    /** Number of idle (available) connections */
    idleConnections: number;
    /** Number of requests waiting for a connection */
    waitingRequests: number;
}
/**
 * Connection pool interface
 * Manages database connection lifecycle
 */
export interface IConnectionPool {
    /**
     * Acquire a connection from the pool
     * @returns Database adapter connection
     * @throws Error if pool is exhausted or timeout occurs
     */
    acquire(): Promise<IDatabaseAdapter>;
    /**
     * Return a connection to the pool
     * @param connection - Connection to release
     */
    release(connection: IDatabaseAdapter): Promise<void>;
    /**
     * Close all connections in the pool
     */
    closeAll(): Promise<void>;
    /**
     * Get pool statistics
     * @returns Current pool statistics
     */
    stats(): IPoolStats;
}
//# sourceMappingURL=IConnectionPool.d.ts.map