Module pool 

Connection Pooling Modes - HeliosProxy

Implements three connection pooling modes for optimized backend connection sharing:

• Session Mode: 1:1 client-to-backend mapping (current default behavior)
• Transaction Mode: Return connection to pool after COMMIT/ROLLBACK
• Statement Mode: Return connection after each statement (most aggressive)

Feature Flag

This module requires the pool-modes feature flag.

Usage

use heliosdb_proxy::pool::{PoolingMode, ConnectionPoolManager, PoolModeConfig};

let config = PoolModeConfig {
    default_mode: PoolingMode::Transaction,
    max_pool_size: 100,
    ..Default::default()
};

let manager = ConnectionPoolManager::new(config);
let lease = manager.acquire(client_id, &node).await?;
// Use connection...
manager.release(lease).await;

Re-exports

pub use config::PoolModeConfig;

pub use hardening::PoolHardening;

pub use hardening::TransactionLeakDetector;

pub use hardening::ConnectionHealthValidator;

pub use hardening::StaleLeaseCleaner;

pub use hardening::PoolExhaustionMonitor;

pub use hardening::HardeningStats;

pub use lease::ConnectionLease;

pub use lease::LeaseAction;

pub use manager::ConnectionPoolManager;

pub use metrics::PoolModeMetrics;

pub use mode::PoolingMode;

pub use mode::PreparedStatementMode;

pub use mode::TransactionEvent;

pub use prepared::PreparedStatementTracker;

pub use reset::ConnectionResetExecutor;

pub use session::SessionModeHandler;

pub use statement::StatementModeHandler;

pub use transaction::TransactionModeHandler;

Modules

config

Pool Mode Configuration

hardening

Connection Pool Hardening

lease

Connection Lease Management

manager

Connection Pool Manager

metrics

Pool Mode Metrics

mode

Pooling Mode Definitions

prepared

Prepared Statement Tracker

reset

Connection Reset Executor

session

Session Mode Handler

statement

Statement Mode Handler

transaction

Transaction Mode Handler