Cassandra vs MongoDB: Key Differences & When to Use Each
Comprehensive side-by-side comparison of features, pricing, and metrics
Key Differences
Compare Cassandra and MongoDB across features, pricing, integrations, and community metrics. Cassandra / MongoDB.
Feature
Cassandra
Database
MongoDB
Database
Side-by-side comparison of developer tools
Highly-scalable distributed database
NoSQL document database
GitHub Stars
⭐ 9,702
⭐ 28,241
Contributors
👥 670
👥 1,430
Pricing
✓ Free
Enterprise: Contact sales
✓ Free
Enterprise: Contact sales
Languages
Java
C++
Features
- • Cassandra
- • Database
- • Java
- • C Plus Plus
- • Database
- • Mongodb
- • Nosql
Integrations
- • prometheus
- • mongodb
Momentum Score
83/100Momentum838383
(stable)
70/100Momentum707070
(stable)
Community Health
57/100Health575757
(moderate)
81/100Health818181
(good)
Maturity Index
50/100Maturity505050
(emerging)
71/100Maturity717171
(established)
Innovation Score
23/100Innovation232323
(traditional)
59/100Innovation595959
(progressive)
Risk Score (higher is safer)
53/100Risk535353
(low)
76/100Risk767676
(minimal)
Developer Experience
21/100DX212121
(poor)
54/100DX545454
(needs-improvement)
Links
Cassandra Strengths
MongoDB Strengths
- ✓ More popular (28,241 stars)
- ✓ Larger community (1,430 contributors)
- ✓ More features (4 listed)
When to Use Cassandra vs MongoDB
Use Cassandra when its strengths align better with your stack and team needs, and choose MongoDB when its ecosystem, integrations, or cost profile is a better fit.
More Comparisons
Data source: GitHub API
Last updated: 4/18/2026