Agroal review
An embedded Java pool with practical controls for connection lifecycle and monitoring.
Reviewed by iTechGuides Editors · Editorial team · Updated Nov 2026
Agroal is an open-source Java library that provides a pooled `javax.sql.DataSource` inside an application. It is aimed at JVM teams that want to configure database connection pooling as part of their own software rather than adopt a separately hosted service. Its controls cover minimum and maximum pool sizes, connection acquisition timeouts, validation, idle reaping, and connection lifetime. The project is self-hosted and has no separate hosted pooling layer in its stated deployment model.
The feature set extends beyond sizing: Agroal provides connection leak detection and reporting, pool metrics and statistics, health checks, and flush operations for removing or replenishing connections. It also supports transaction-system integration and offers integrations for Spring Boot and Narayana, including a Spring Boot starter. These capabilities make it relevant when a Java application needs pool visibility and lifecycle controls alongside its existing transaction setup. The documented pooling mode is connection pooling; transaction integration should not be mistaken for transaction-based connection reassignment.
Agroal is published as open source, with a free plan, and is not described as a separately priced hosted pooling service. That makes it a fit for teams comfortable embedding and operating a library within their application, from solo developers through enterprise teams. Documentation is the listed support channel, so buyers seeking a hosted service or a broader support offering should consider other options. Teams looking specifically for session-, transaction-, or statement-mode pooling should also look elsewhere; Agroal's documented focus is the pooled data source and its connection-level configuration.
Agroal pros and cons
- Where it wins
- Configures minimum and maximum pool sizes and acquisition timeouts
- Includes validation, idle reaping, leak detection, and flush operations
- Exposes pool metrics and health checks, with Spring Boot and Narayana integration
- Where it doesn't
- Embedded library, not a separately hosted pooling service
- Pooling is connection-based; transaction-based reassignment is not documented
- Documentation is the listed support channel
Agroal fact sheet, pricing and score →
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