Redis Sentinel
Automatic failover with cross-region replicas
Deploy a Redis Sentinel cluster with automatic failover, HAProxy for transparent master routing, and cross-region replicas for geo-distributed caching. Configurable persistence with RDB and AOF. A self-hosted, production-ready alternative to AWS ElastiCache.
Redis Sentinel Automatic Failover
Redis Sentinel monitors your Redis instances and automatically handles failover when the master node fails.
- Automatic failover: Detects master failures and promotes a replica within seconds
- Quorum-based decisions: Multiple sentinel nodes vote on failover decisions
- Configuration updates: Automatically updates client configurations after failover
- Health monitoring: Continuous monitoring of master and replica health
HAProxy Master Routing
HAProxy automatically routes all traffic to the current master node, handling failover transparently.
- Always points to master: HAProxy configuration updates automatically when master changes
- Transparent failover: Applications don't need to handle master changes
- Health checks: Monitors Redis health and routes traffic accordingly
- Load balancing: Can distribute reads across replicas when configured
Cross-Region Replicas
Deploy Redis replicas in different geographical regions for faster reads and improved availability.
- Geo-distributed caching: Serve cache reads from the closest region
- Automatic replication: Replicas stay in sync with the master via replication
- Faster reads: Lower latency for applications in different regions
- Disaster recovery: Replicas can be promoted to master in case of region failure
Persistence Options
Configure Redis persistence based on your durability requirements.
- RDB snapshots: Periodic snapshots for point-in-time recovery
- AOF persistence: Append-only file for better durability guarantees
- Hybrid approach: Combine RDB and AOF for optimal performance and durability
- Configurable persistence: Tune persistence settings based on your workload
Visual Config Editor
Customize your Redis and Sentinel configuration without editing raw config files. Our visual config editor layers your customizations on top of battle-tested defaults.
- Pre-configured defaults: Start with production-ready settings tuned for performance
- Override anything: Add custom settings that merge with our defaults
- No config conflicts: Your changes apply cleanly without breaking core functionality
- Version controlled: Track configuration changes across deployments
Why Self-Host
Why Self-Host Redis Sentinel?
Skip the markup. Deploy on your own servers and save 60-90% compared to AWS ElastiCache.
Self-hosting gives you
- Save 70-85% compared to AWS ElastiCache pricing
- No VPC lock-in — access Redis from anywhere, not just AWS
- Full Redis configuration access including persistence tuning
- SSH access for debugging, monitoring, and custom scripting
- Use any Redis-compatible software (Valkey, KeyDB) without restrictions
Cost comparison vs AWS ElastiCache
| Setup | AWS ElastiCache | Self-Hosted |
|---|---|---|
| Small (3 nodes, 8GB RAM) | $300-450/mo | $30/mo |
| Medium (3 nodes, 16GB RAM) | $600-900/mo | $45/mo |
| Large (3 nodes, 32GB RAM) | $1,200-1,800/mo | $75/mo |
Self-hosted prices based on Hetzner dedicated servers. Managed prices based on AWS ElastiCache with Multi-AZ replication.
FAQ
Frequently Asked Questions
Common questions about this deployment recipe.
Learn More
Related Guides
In-depth guides to help you get the most out of your deployment.
Redis Sentinel vs Redis Cluster: Which Should You Use?
A practical comparison of Redis Sentinel and Redis Cluster. Learn when to use each, how they handle failover, and which architecture fits your use case.
What is Redis Sentinel? A Beginner's Guide
Learn what Redis Sentinel is, how it provides high availability for Redis, and how automatic failover works. A practical introduction for developers new to Redis HA.
How to Set Up Redis Sentinel: Step-by-Step Tutorial
A complete tutorial for setting up Redis Sentinel with automatic failover. Covers installation, configuration, HAProxy routing, and production hardening.
ElastiCache vs Self-Hosted Redis Sentinel: Cost and Feature Comparison
Compare AWS ElastiCache and self-hosted Redis Sentinel. Covers pricing at every scale, failover behavior, networking limitations, and when to choose each.
Self-Hosting vs Managed Databases: A Practical Cost & Control Comparison
Compare self-hosted and managed database services across cost, control, performance, and operational overhead. Includes real pricing breakdowns for PostgreSQL, ClickHouse, and Redis.
Simple, one-time pricing
Pay once, get free updates for a year. After that, pay again to continue receiving updates.
50 spots remaining
One-time payment • Free updates for 1 year
- All database recipes (and upcoming recipes)
- Unlimited servers
- All cloud providers
- Server hardening
- Monitoring stack
- AI-powered diagnostics
- Cross-region replicas
- Free updates for 1 year
After 1 year, pay again to continue receiving updates
Other Recipes
Explore our other production-ready database clusters.
ClickHouse Cluster
Deploy a production-ready ClickHouse cluster on your own servers with configurable shards and replicas. Includes ClickHouse Keeper for distributed coordination, CHProxy for load balancing and connection pooling, automated S3 backups, and hot/cold tiered storage. Self-host ClickHouse with the reliability of a managed service.
PostgreSQL + Patroni
Deploy a high-availability PostgreSQL cluster with Patroni for automatic failover, etcd for distributed consensus, PgBouncer for connection pooling, and HAProxy for read/write splitting. Includes pgBackRest for automated backups and cross-region read replicas. A production-ready, self-hosted alternative to AWS RDS.