Updated for 2026
MongoDBvs
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
MongoDB
MongoDB is a document-oriented database that stores BSON/JSON-like documents — strong for flexible schemas, change streams, and sharded clusters (self-host or Atlas).
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Redis
Redis is the default in-memory data platform for caching, sessions, pub/sub, and low-latency application state.
Visit RedisBasics
| Feature | MongoDB | Redis |
|---|---|---|
| Released | 2016 | 2009 |
| Company | MongoDB, Inc. | Redis Ltd. |
| Country | United States | United States |
| Region / Availability | Self-host / multi-cloud | Self-host / multi-cloud |
Pricing comparison
| Plan | MongoDB | Redis |
|---|---|---|
| Model | freemium | open-source |
| Free tier | Yes | Yes |
| Starts at | $0/mo | $0/mo |
| Plan 1 | Free: FreeLimited to 512MB storage, primarily for learning purposes. | Open Source / CE: Free |
| Plan 2 | Flex: $30/moFor application development and testing, with on-demand burst capacity for unpredictable traffic. Limited to 5GB storeage. | Redis Cloud: Usage-based |
| Plan 3 | Dedicated: Starts at $57/moFor production applications with complex workloads. 10GB to 4TB storage, dedicated memory and CPU. | — |
Feature checklist
| Feature | MongoDB | Redis |
|---|---|---|
| Open Source | ✓https://github.com/mongodb/mongo | ✓https://github.com/redis/redis |
| Self-host Option | ✓ | ✓ |
| ACID | Document atomicity; multi-document ACID transactions (4.0+) | Atomic commands; MULTI/EXEC is not full RDBMS ACID |
| Index Support | Single, compound, text, geospatial, wildcard, and vector indexes | Secondary indexes via Redis Query / RediSearch; sorted sets |
| Concurrency | High concurrency for document workloads with wiredTiger locking | Very high ops/sec; single-threaded command execution per shard |
| Scalability | Native horizontal sharding and replica sets | 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 | Flexible document storage for product catalogs, content, and event-driven apps | In-memory cache, sessions, queues, pub/sub, and real-time structures |
Pros & cons
MongoDB
- Document model flexibility
- Strong Atlas developer tooling
- Vector search and multi-cloud options
- Not relational SQL
- Cost management needs care at scale
- Auth/storage not as turnkey as BaaS suites
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 | MongoDB | Redis |
|---|---|---|
| Capability | 8.5 | 8.8 |
| Privacy | 6.0 | 8.5 |
| Value | 7.0 | 9.0 |
| Depth | 8.5 | 8.0 |
| Ecosystem | 9.0 | 9.5 |
| DX | 7.5 | 8.5 |
- MongoDB
- Redis
FAQ
Is MongoDB better than Redis?
It depends on workflow. MongoDB emphasizes document database for flexible json-like data, rich indexing, and horizontal scale. 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.