OpenSwoole Connection Pool

At a glance

• Editor score
  6.8 / 10
• Pricing
  Free plan
• Best for
  PHP coroutine MySQL or PostgreSQL pooling
• Free plan
  Yes
• Paid from
  Free
• Transaction pooling
  No
• Facts checked
  14 Nov 2026

• Where it wins

  • Free, open-source component for self-hosted PHP deployments
  • Supports asynchronous MySQL and PostgreSQL coroutine clients
  • Provides clear pool lifecycle operations and PDO factory example

• Where it doesn't

  • Application-level pool rather than a standalone database proxy
  • No transaction-pooling mode in the documented feature set
  • Community support may not suit teams needing dedicated assistance

Our verdict on OpenSwoole Connection Pool

OpenSwoole Connection Pool is a component of the OpenSwoole PHP runtime and core library. It is designed for developers building concurrent PHP services with OpenSwoole coroutines. Applications can create and initialize a client pool, retrieve a client for work, return it for reuse, and close the pool. The documentation also demonstrates a PDO client factory, while OpenSwoole provides coroutine asynchronous clients for MySQL and PostgreSQL. This makes the component a focused fit for PHP services that need reusable database clients inside the application process.

The pricing model is open source with a free plan, and deployment is self-hosted on Linux or macOS. Its ecosystem fit is closely tied to OpenSwoole and PHP rather than to a separate connection-management appliance. The published feature set includes a PDO pooling example and asynchronous MySQL and PostgreSQL clients, giving teams a direct path to those databases when their services already use OpenSwoole's coroutine runtime. Organizations can adapt the component within their own application architecture instead of introducing a separate proxy tier.

Scope is the main trade-off. The documented pool is an embedded, application-level client pool, not a standalone database proxy, and its feature set does not include transaction-pooling modes. The component also centers on MySQL, PostgreSQL, and PDO patterns rather than presenting a broad database integration catalog. Support is community-based, so teams should plan to manage deployment and operational decisions themselves. Choose OpenSwoole Connection Pool when your PHP services need coroutine-aware client reuse and you control the runtime; choose a standalone pooling proxy when shared infrastructure or transaction-level pooling is required.

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OpenSwoole Connection Pool pricing

OpenSwoole Connection Pool fact sheet

Alternatives to OpenSwoole Connection Pool

• MMMariaDB MaxScaleSQL-aware pooling and routing for MariaDB and MySQL-compatible production environments.9.3
• OOdysseyA focused, open-source pooler for PostgreSQL session and transaction workloads.9.1
• PgBouncerA self-hosted PostgreSQL pooler with flexible modes and connection controls, but no built-in failover.8.9

See all OpenSwoole Connection Pool alternatives →

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Reviewed by iTechGuides Editors · Editorial team · Updated Nov 2026

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Last updated 14 Nov 2026 · How we research and update