HeliosProxy vs Odyssey
HeliosProxy
heliosdb.comOdyssey
pg-odyssey.techSide by side
| Figure | HeliosProxy | Odyssey |
|---|---|---|
| Price from | Free | — |
| Free plan | Yes | — |
| Free trial | — | — |
| Open source | — | — |
| macOS | — | Yes |
| Linux | Yes | Yes |
| API | Yes | — |
| Self-hosted | Yes | Yes |
| Plans published | 1 | 0 |
| Spec score · Database Proxy Software | 7.8 (#8) | 7.5 (#17) |
| Deployment | The maker documents Docker, Kubernetes, and standalone deployment options. | Odyssey can be installed from the PGDG repository, run from a public Docker image, or built locally. |
| License | HeliosProxy is open source under the Apache 2.0 license. | The maker's license page permits redistribution and use of source and binary forms, subject to its listed conditions and disclaimer. |
| Support | The company lists a support contact at [email protected] and links to community support on Discord. | Users can report issues on the project page or ask usage and development questions in the Telegram community; the project says responses may not be quick. |
Plans
In their own words
HeliosProxy
HeliosProxy is a self-hosted, programmable PostgreSQL data-plane for routing connections, handling failover, replaying traffic, and supporting database upgrades. It provides session, transaction, and statement pooling, with multiplexing up to 100:1. Routing can account for replica lag, workload type, and failing backends through circuit breaking. Cache options include local memory, Redis-backed storage, and semantic tiers, with invalidation when writes occur. Transaction Replay can move sessions to a new primary and optionally replay reads or transactions when conditions permit, although prepared statements, temporary tables, open cursors, advisory locks, and extended-protocol SET statements are not restored. A WebAssembly plugin runtime offers five hook points, Ed25519 verification, and OCI distribution. The admin console includes topology, plugin, chaos, shadow-execution, and traffic-replay panels. Authentication supports JWT, OAuth 2.0, LDAP, and API keys. HeliosProxy works with PostgreSQL 12+ and compatible databases, and deployment documentation covers Docker, Kubernetes, and standalone setups. It is open source under Apache 2.0 and costs nothing.