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HeliosProxy
What it is
HeliosProxy is a programmable PostgreSQL data-plane for connection routing, failover, traffic replay, and database upgrades. It supports session, transaction, and statement pooling, with up to 100:1 connection multiplexing. Routing options include lag-aware replica selection, workload-based routing, and circuit breaking for failing backends. Its cache offers local-memory, Redis-backed, and semantic tiers, with invalidation on writes. Transaction Replay can move sessions to a new primary and may replay reads or transactions when conditions allow. Some state does not carry across failover: SQL-level prepared statements, session temporary tables, open cursors, advisory locks, and extended-protocol SET statements are not restored. A WASM plugin runtime has five hook points and supports Ed25519 signature verification and OCI artifact distribution. Its admin web console includes topology, plugin, chaos, shadow-execution, and traffic-replay panels. Authentication options include JWT, OAuth 2.0, LDAP, and API keys. HeliosProxy works with PostgreSQL 12+ and compatible backends, and documents Docker, Kubernetes, and standalone deployment. It is self-hosted, open source under Apache 2.0, and free.
For and against
For
- Supports three pooling modes
- Offers lag-aware and workload-based routing
- Cache invalidates on writes
- Supports JWT, OAuth 2.0, LDAP, and API keys
Against
- Several session states are not restored across failover
- Requires self-hosted deployment
- Replay is conditional on circumstances
The verdict
HeliosProxy brings pooling, routing, caching, and failover functions into a self-hosted PostgreSQL data-plane. Review the failover limits against the session state your workloads depend on.
Who it suits
HeliosProxy suits teams operating PostgreSQL or PostgreSQL-compatible databases that need pooling, routing, or failover capabilities. Its documented deployment options include Docker, Kubernetes, and standalone setups.
Plans and prices
HeliosProxy
Open source under Apache 2.0 · 46 feature modules · Works with PostgreSQL-wire-compatible databases
Read 9 Oct 2026 · heliosdb.com
On the record
- Admin
- A built-in admin web console provides topology, plugin, chaos, shadow-execution, and traffic-replay panels, using the proxy's JWT or API-key admin authentication.heliosdb.com · read 9 Oct 2026
- Caching
- Its cache has local-memory, Redis-backed, and semantic tiers, with cache invalidation on writes.heliosdb.com · read 9 Oct 2026
- Deployment
- The maker documents Docker, Kubernetes, and standalone deployment options.heliosdb.com · read 9 Oct 2026
- Failover
- Transaction Replay can re-home sessions to a new primary and offers optional read or transaction replay when conditions allow.heliosdb.com · read 9 Oct 2026
- Failover limits
- SQL-level prepared statements, session temporary tables, open cursors, advisory locks, and extended-protocol SET statements are not restored across failover.heliosdb.com · read 9 Oct 2026
- Integrations
- It works with PostgreSQL 12+ and PostgreSQL-compatible backends including Amazon RDS, Aurora, Cloud SQL, Azure Database, CockroachDB, YugabyteDB, TimescaleDB, Citus, and AlloyDB.heliosdb.com · read 9 Oct 2026
- License
- HeliosProxy is open source under the Apache 2.0 license.heliosdb.com · read 9 Oct 2026
- Plugins
- The WASM plugin runtime has five hook points and supports Ed25519 signature verification and OCI artifact distribution.heliosdb.com · read 9 Oct 2026
- Pooling
- It offers session, transaction, and statement pooling modes, with up to 100:1 connection multiplexing.heliosdb.com · read 9 Oct 2026
- Product
- HeliosProxy is a programmable PostgreSQL data-plane for connection routing, failover, traffic replay, and database upgrades.heliosdb.com · read 9 Oct 2026
- Routing
- It supports lag-aware replica routing, workload-based routing, and circuit breaking for failing backends.heliosdb.com · read 9 Oct 2026
- Security
- The proxy supports JWT, OAuth 2.0, LDAP, and API-key authentication, with identity claim-to-database-role mapping.heliosdb.com · read 9 Oct 2026
- Support
- The company lists a support contact at [email protected] and links to community support on Discord.heliosdb.com · read 9 Oct 2026
