Updated for 2026
PostgreSQLvs
Redis
Not sure which fits your workflow in 2026? Compare pricing, features, and trade-offs — then switch tools below to explore more options in this category.
dev-database
PostgreSQL
PostgreSQL is the open-source relational database many modern stacks standardize on — powerful SQL, extensions, and a vast ecosystem.
Visit PostgreSQLdev-database
Redis
Redis is the default in-memory data platform for caching, sessions, pub/sub, and low-latency application state.
Visit RedisBasics
| Feature | PostgreSQL | Redis |
|---|---|---|
| Released | 1996 | 2009 |
| Company | PostgreSQL Global Development Group | Redis Ltd. |
| Country | International | United States |
| Region / Availability | Self-host / multi-cloud | Self-host / multi-cloud |
Pricing comparison
| Plan | PostgreSQL | Redis |
|---|---|---|
| Model | open-source | open-source |
| Free tier | Yes | Yes |
| Starts at | $0/mo | $0/mo |
| Plan 1 | Open Source: Free | Open Source / CE: Free |
| Plan 2 | Managed clouds: Vendor pricingMany managed hosts available | Redis Cloud: Usage-based |
Feature checklist
| Feature | PostgreSQL | Redis |
|---|---|---|
| Open Source | ✓ | ✓https://github.com/redis/redis |
| Self-host Option | ✓ | ✓ |
| ACID | Full ACID compliance | Atomic commands; MULTI/EXEC is not full RDBMS ACID |
| Index Support | B-tree, Hash, GiST, GIN, BRIN, and extension indexes (e.g. vectors) | Secondary indexes via Redis Query / RediSearch; sorted sets |
| Concurrency | Excellent MVCC for mixed read/write workloads | Very high ops/sec; single-threaded command execution per shard |
| Scalability | Vertical scale + replicas; sharding via extensions/ops | Cluster mode sharding + replicas |
| SQL Support | ✓ | ✗ |
| Postgres Compatible | ✓ | ✗ |
| Serverless Database | ✗ | ✗ |
| Vector Search | ✓ | ✓ |
| Realtime | ✗ | ✓ |
| Built-in Auth | ✗ | ✗ |
| Blob / File Storage | ✗ | ✗ |
| Edge Compatible | ✗ | ✓ |
| AI SQL / NL Query | ✗ | ✗ |
| AI Schema Assist | ✗ | ✗ |
| AI Agent / MCP | ✗ | ✗ |
| Team Collaboration | ✓ | ✓ |
| Use Case | General-purpose open-source relational database and extension hub | In-memory cache, sessions, queues, pub/sub, and real-time structures |
Pros & cons
PostgreSQL
- Gold-standard open-source SQL engine
- Huge extension ecosystem (including vectors)
- Foundation for many modern BaaS platforms
- You assemble auth/storage yourself
- Ops complexity grows without a managed host
- Not a serverless product by itself
Redis
- Extremely fast in-memory performance
- Versatile data structures for caching and queues
- Wide client and cloud hosting ecosystem
- Not a primary relational system of record
- Memory cost and persistence trade-offs
- Licensing / product naming has evolved
Dimension scores
Editorial 0–10 scores across shared dimensions — higher is better for that axis.
| Dimension | PostgreSQL | Redis |
|---|---|---|
| Capability | 9.2 | 8.8 |
| Privacy | 9.5 | 8.5 |
| Value | 9.5 | 9.0 |
| Depth | 9.5 | 8.0 |
| Ecosystem | 9.5 | 9.5 |
| DX | 8.0 | 8.5 |
- PostgreSQL
- Redis
FAQ
Is PostgreSQL better than Redis?
It depends on workflow. PostgreSQL emphasizes advanced open-source relational database with rich sql, extensions, and reliability. Redis emphasizes in-memory data store used for caching, queues, sessions, and real-time structures. Use the feature checklist above for your stack.
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Related alternatives
Disclaimer:Not Financial or Investment Advice, Educational/Dev Tool Comparison Only. Information may change; always verify pricing on the vendor site before purchasing.