What users are saying about
76 Ratings
25 Ratings
76 Ratings
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Score 7.9 out of 100
25 Ratings
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Score 8.1 out of 100

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

Cosmos DB is fast, reliable, and highly available. We use it mostly in analytics and applications that leverage big data hosted on the Azure Datacenter. If you have a virtual private cloud in one of Azure sites, then you would definitely need Cosmos. It works well with on-premises applications and offers little to no latency.
Anonymous | TrustRadius Reviewer

Feature Rating Comparison

NoSQL Databases

Cassandra
8.0
Azure Cosmos DB
7.7
Performance
Cassandra
8.5
Azure Cosmos DB
7.9
Availability
Cassandra
8.7
Azure Cosmos DB
8.7
Concurrency
Cassandra
7.6
Azure Cosmos DB
7.0
Security
Cassandra
8.0
Azure Cosmos DB
7.3
Scalability
Cassandra
9.4
Azure Cosmos DB
8.7
Data model flexibility
Cassandra
6.7
Azure Cosmos DB
7.0
Deployment model flexibility
Cassandra
7.0
Azure Cosmos DB
7.5

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

  • Injects unstructured data at a very high speed.
  • No real need for administrative work, it indexes everything on it's own.
Anonymous | 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

  • Cosmos DB can be very expensive if you're using it for scenarios that are better completed in regular old Azure Table Storage or Blob Storage, specifically if you put some thought into your partitioning schemes. No product is a good substitute for thoughtful system design.
  • It would be helpful if I had some more insight into how many resources (DTUs) an individual query uses.
  • The auto-indexing is great, but a little mysterious -- not usually an issue but it does require some intentional thought.
Lars Kemmann | TrustRadius Reviewer

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 7.9
Based on 4 answers
The total cost of ownership is much higher than anticipated. The documentation for their API calls is still not complete. TCO did go up as a result as well. Having users learning another JQL-like language also added more complexity to it. Support of ANSI-SQL would be ideal. But the cost of managing it is much less compared to Redis, Mongo, or Cassandra.
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 8.0
Based on 1 answer
Like I said, Cosmos is the way to go. From all of the services that Azure has, Cosmos is very robust in terms of usability. It's ever-evolving and integrates with other applications seamlessly. The interface is pretty easy to understand. I implemented various solutions for my company and Cosmos was one of them.
Anonymous | 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 10.0
Based on 1 answer
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 is a fully managed NoSQL database & globally distributed NoSQL database service. Its very fast and predictable performance, high availability, elastic scaling, global distribution, and ease of development DB platform compare to MongoDB.
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

Pricing Details

Cassandra

General

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

Azure Cosmos DB

General

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

Rating Summary

Likelihood to Recommend

Cassandra
6.7
Azure Cosmos DB
7.7

Likelihood to Renew

Cassandra
8.6
Azure Cosmos DB
7.9

Usability

Cassandra
7.0
Azure Cosmos DB
8.0

Support Rating

Cassandra
7.0
Azure Cosmos DB
10.0

Implementation Rating

Cassandra
7.0
Azure Cosmos DB

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