What users are saying about
85 Ratings
36 Ratings
85 Ratings
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Score 8.2 out of 100
36 Ratings
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Score 8.3 out of 100

Feature Set Ratings

  • Azure Cosmos DB ranks higher in 1 feature set: NoSQL Databases

NoSQL Databases

8.0

Cassandra

80%
8.6

Azure Cosmos DB

86%
Azure Cosmos DB ranks higher in 5/7 features

Performance

8.5
85%
5 Ratings
8.2
82%
6 Ratings

Availability

8.8
88%
5 Ratings
9.5
95%
6 Ratings

Concurrency

7.6
76%
5 Ratings
8.1
81%
6 Ratings

Security

8.0
80%
5 Ratings
9.4
94%
6 Ratings

Scalability

9.5
95%
5 Ratings
8.6
86%
6 Ratings

Data model flexibility

6.7
67%
5 Ratings
8.1
81%
6 Ratings

Deployment model flexibility

7.0
70%
5 Ratings
8.5
85%
6 Ratings

Attribute Ratings

  • Apache Cassandra is rated higher in 1 area: Likelihood to Renew
  • Azure Cosmos DB is rated higher in 3 areas: Likelihood to Recommend, Usability, Support Rating

Likelihood to Recommend

6.0

Cassandra

60%
16 Ratings
8.4

Azure Cosmos DB

84%
6 Ratings

Likelihood to Renew

8.6

Cassandra

86%
16 Ratings
7.7

Azure Cosmos DB

77%
4 Ratings

Usability

7.0

Cassandra

70%
1 Rating
8.6

Azure Cosmos DB

86%
2 Ratings

Support Rating

7.0

Cassandra

70%
2 Ratings
9.4

Azure Cosmos DB

94%
2 Ratings

Implementation Rating

7.0

Cassandra

70%
2 Ratings

Azure Cosmos DB

N/A
0 Ratings

Likelihood to Recommend

Cassandra

Apache Cassandra is a NoSQL database and well suited where you need highly available, linearly scalable, tunable consistency and high performance across varying workloads. It has worked well for our use cases, and I shared my experiences to use it effectively at the last Cassandra summit! http://bit.ly/1Ok56TKIt is a NoSQL database, finally you can tune it to be strongly consistent and successfully use it as such. However those are not usual patterns, as you negotiate on latency. It works well if you require that. If your use case needs strongly consistent environments with semantics of a relational database or if the use case needs a data warehouse, or if you need NoSQL with ACID transactions, Apache Cassandra may not be the optimum choice.
Rekha Joshi | TrustRadius Reviewer

Azure Cosmos DB

NoSQL platforms are very useful when it comes to security, speed, accuracy, high accessibility with high read and write power. Everything is managed under the cloud and we have the various capabilities of Azure and support for Microsoft products with us. Flexibility in price and variety of features, as well as real-time results, are some of the popular [features] of this platform.
Niloofar Keshvari Nia | TrustRadius Reviewer

Pros

Cassandra

  • Continuous availability: as a fully distributed database (no master nodes), we can update nodes with rolling restarts and accommodate minor outages without impacting our customer services.
  • Linear scalability: for every unit of compute that you add, you get an equivalent unit of capacity. The same application can scale from a single developer's laptop to a web-scale service with billions of rows in a table.
  • Amazing performance: if you design your data model correctly, bearing in mind the queries you need to answer, you can get answers in milliseconds.
  • Time-series data: Cassandra excels at recording, processing, and retrieving time-series data. It's a simple matter to version everything and simply record what happens, rather than going back and editing things. Then, you can compute things from the recorded history.
David Prinzing | TrustRadius Reviewer

Azure Cosmos DB

  • Turn-key geo-redundancy with multi-master writes is unprecedented and unparalleled in the industry!
  • Guaranteed low latency makes Cosmos DB an excellent fit for most of our performance-intensive situations.
  • The tunable consistency model simplifies so many challenges in distributed systems engineering that otherwise require advanced knowledge of computer science topics. I continue to be impressed at how Cosmos DB has abstracted away so much complexity.
Lars Kemmann | TrustRadius Reviewer

Cons

Cassandra

  • Cassandra runs on the JVM and therefor may require a lot of GC tuning for read/write intensive applications.
  • Requires manual periodic maintenance - for example it is recommended to run a cleanup on a regular basis.
  • There are a lot of knobs and buttons to configure the system. For many cases the default configuration will be sufficient, but if its not - you will need significant ramp up on the inner workings of Cassandra in order to effectively tune it.
Anonymous | TrustRadius Reviewer

Azure Cosmos DB

  • Expensive, so be careful of the use case.
  • We had a thought time migrating from traditional DBs to Cosmos. Azure should provide a seamless platform for the migration of data from on-premises to cloud.
Anonymous | TrustRadius Reviewer

Pricing Details

Cassandra

General

Free Trial
Free/Freemium Version
Premium Consulting/Integration Services
Entry-level set up fee?
No

Starting Price

Azure Cosmos DB

General

Free Trial
Free/Freemium Version
Premium Consulting/Integration Services
Entry-level set up fee?
No

Starting Price

Likelihood to Renew

Cassandra

Cassandra 8.6
Based on 16 answers
I would recommend Cassandra DB to those who know their use case very well, as well as know how they are going to store and retrieve data. If you need a guarantee in data storage and retrieval, and a DB that can be linearly grown by adding nodes across availability zones and regions, then this is the database you should choose.
Anonymous | TrustRadius Reviewer

Azure Cosmos DB

Azure Cosmos DB 7.7
Based on 4 answers
It's efficient, easy to scale, and works. We do have to do a bit of administration, but less now than when we started with this a couple of years ago. Microsoft continues to improve its self-management capability.
Anonymous | TrustRadius Reviewer

Usability

Cassandra

Cassandra 7.0
Based on 1 answer
It’s great tool but it can be complicated when it comes administration and maintenance.
Glen Kim | TrustRadius Reviewer

Azure Cosmos DB

Azure Cosmos DB 8.6
Based on 2 answers
It has very good compatibility and adaptability with other APIs and developers can safely create new apps because it is compatible with various tools and can be easily managed and run under the cloud, and in terms of security, it is one of the best of its kind, which is very powerful and excellent.
Niloofar Keshvari Nia | TrustRadius Reviewer

Support Rating

Cassandra

Cassandra 7.0
Based on 2 answers
Sometimes instead giving straight answer, we ‘re getting transfered to talk professional service.
Glen Kim | TrustRadius Reviewer

Azure Cosmos DB

Azure Cosmos DB 9.4
Based on 2 answers
Microsoft is the best when it comes to after-sales support. They have a well-structured training and knowledge base portal that anyone can use. They are usually quick to respond to cases and are on point for on-call support. I have no complaints from a support standpoint. Pretty happy with the support.
Anonymous | TrustRadius Reviewer

Alternatives Considered

Cassandra

We evaluated MongoDB also, but don't like the single point failure possibility. The HBase coupled us too tightly to the Hadoop world while we prefer more technical flexibility. Also HBase is designed for "cold"/old historical data lake use cases and is not typically used for web and mobile applications due to its performance concern. Cassandra, by contrast, offers the availability and performance necessary for developing highly available applications. Furthermore, the Hadoop technology stack is typically deployed in a single location, while in the big international enterprise context, we demand the feasibility for deployment across countries and continents, hence finally we are favor of Cassandra
yixiang Shan | TrustRadius Reviewer

Azure Cosmos DB

Azure Cosmos DB has the benefit of having multi-master key tenancy compared to Redis and Mongo. Reads are just as fast, if not faster than Mongo. However, the distribution of writes (i.e. ACID transactions) isn't as high as Google Cloud Spanner or CouchDB. Azure Cosmos DB writes slower than Cassandra, but with Cosmos, we do not have to worry about replication or tools like Zookeeper to handle it. Azure Cosmos DB has it built-in.
Anonymous | TrustRadius Reviewer

Return on Investment

Cassandra

  • I have no experience with this but from the blogs and news what I believe is that in businesses where there is high demand for scalability, Cassandra is a good choice to go for.
  • Since it works on CQL, it is quite familiar with SQL in understanding therefore it does not prevent a new employee to start in learning and having the Cassandra experience at an industrial level.
Anonymous | TrustRadius Reviewer

Azure Cosmos DB

  • Azure Cosmos DB may be expensive on its own, but it was cheaper than increasing the size/power of our VMs running SQL Server instances enough to keep up with the volume and velocity of the unstructured data.
  • We got the JSON data out of our SQL Servers and they quit tipping over.
Anonymous | TrustRadius Reviewer

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