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Cassandra vs ScyllaDB comparison

 

Comparison Buyer's Guide

Executive SummaryUpdated on Jan 7, 2025

Review summaries and opinions

We asked business professionals to review the solutions they use. Here are some excerpts of what they said:
 

Categories and Ranking

Cassandra
Ranking in NoSQL Databases
6th
Average Rating
8.0
Reviews Sentiment
6.1
Number of Reviews
24
Ranking in other categories
Vector Databases (14th)
ScyllaDB
Ranking in NoSQL Databases
2nd
Average Rating
7.8
Reviews Sentiment
7.0
Number of Reviews
12
Ranking in other categories
No ranking in other categories
 

Mindshare comparison

As of June 2025, in the NoSQL Databases category, the mindshare of Cassandra is 10.6%, down from 12.9% compared to the previous year. The mindshare of ScyllaDB is 10.1%, down from 10.3% compared to the previous year. It is calculated based on PeerSpot user engagement data.
NoSQL Databases
 

Featured Reviews

Himanshu Amodwala - PeerSpot reviewer
Well-equipped to handle a massive influx of data and billions of requests
The use of Cassandra in real-time data analytics has been pivotal for our e-commerce platform. As our platform operates 24/7, providing services to sellers and customers alike, the need for real-time updates is paramount. For instance, when a customer leaves comments or feedback on an image, they anticipate an immediate reflection of these changes on the portal. Similarly, sellers altering product attributes or updating images expect instant visibility of these modifications. Handling large data volumes with Cassandra has been an excellent experience. Despite challenges related to the influx, these were not attributed to Cassandra itself but rather to middle-layer issues. Generally, it demonstrated scalability with workloads, thanks to its horizontal scaling capabilities. We could easily add new nodes to the system as needed, ensuring the platform coped well with increasing loads. The tool's most beneficial feature for scalability is its entire architecture. The absence of a single point of failure or a leader within the ecosystem contributes to its robust scalability. This key aspect influenced our decision to opt for the Cassandra ecosystem. In terms of performance, it demonstrated the ability to handle approximately 1.6 billion requests per day. This was achieved on AWS using EC2 instances, and it was during a period about four to five years ago.
Uttam Giri - PeerSpot reviewer
Offers encryption and supports APIs, making it great for distributed systems
The best features of ScyllaDB are how it synchronizes data and its failover system. There's a unique formula to decide the number of nodes you need and the minimum required, which I find helpful. It also offers encryption and supports APIs, making it great for distributed systems and scaling databases across different regions. While it's easy to use, having prior experience helps configure it properly. There are many configurations; if you don't understand them, you might mess up the design. So, understanding your system's needs, like whether it requires more read or write operations, is crucial for setting up the correct configuration.

Quotes from Members

We asked business professionals to review the solutions they use. Here are some excerpts of what they said:
 

Pros

"Can achieve continuous data without a single downtime because of node to node ring architecture."
"Cassandra is good. It's better than CouchDB, and we are using it in parallel with CouchDB. Cassandra looks better and is more user-friendly."
"We can add almost one million columns to the solution."
"The use of Cassandra in real-time data analytics has been pivotal for our e-commerce platform. As our platform operates 24/7, providing services to sellers and customers alike, the need for real-time updates is paramount."
"The technical evaluation is very good."
"The solution's database capabilities are very good."
"The most valuable features of this solution are its speed and distributed nature."
"Cassandra has some features that are more useful for specific use cases where you have time series where you have huge amounts of writes. That should be quick, but not specifically the reads. We needed to have quicker reads and writes and this is why we are using Cassandra right now."
"The documentation is good. It integrates easily with our existing data infrastructure."
"I like how fast it is to query data from the ScyllaDB node!"
"The product's most valuable features are efficiency and reliability."
"Firstly, if I update something, it's most likely to finish within milliseconds."
"The database is easy to use, fast, and accessible for applications because the API is straightforward."
"ScyllaDB is very fast, and I can use it for so many things."
"The performance aspects of Scylla are good, as always... A good point about Scylla is that it can be used extensively."
"ScyllaDB is fast and reliable. It has good performance."
 

Cons

"Batching bulk data can cause performance issues."
"Cassandra is very complex to manage. Sometimes, I need to involve a senior DevOps engineer if we encounter a problem."
"The disc space is lacking. You need to free it up as you are working."
"We experience configuration issues when accommodating the volumes we require, which often necessitates consultation with the Cassandra development team."
"There could be more integration, and it could be more user-friendly."
"I want Cassandra to update its open-source version more quickly. It's already feature-rich, but I'd appreciate better integration with other NoSQL databases like MariaDB or MongoDB. If I ever need to work with customers or vendors using different NoSQL databases, having native integration in Cassandra would make managing and interacting with their databases much easier."
"The solution doesn't have joins between tables so you need other tools for that."
"The solution is limited to a linear performance."
"From a sales pitch standpoint, it needs to deliver on promises of better ROI and compaction."
"The documentation is not well established for new developers."
"The product needs to add more features and improve the response time of the support team."
"The documentation of Scylla is an area with shortcomings and needs to be improved."
"ScyllaDB needs to improve its handling of transactions."
"It seems we have better options available. So probably don't go for ScyllaDB. The reason is, first, it's very high. It's not as straightforward as, like, Postgres or ClickHouse to set up. It requires a complex setup."
"If you don't have the best computing resources, then it's not easy to set up. In such cases, we have to run ScyllaDB in developer mode."
"Some of the regular commands in NoSQL do not work."
 

Pricing and Cost Advice

"I don't have the specific numbers on pricing, but it was fairly priced."
"Cassandra is a free open source solution, but there is a commercial version available called DataStax Enterprise."
"We pay for a license."
"We are using the open-source version of Cassandra, the solution is free."
"I use the tool's open-source version."
"There are licensing fees that must be paid, but I'm not sure if they are paid monthly or yearly."
"It's free."
"It is an expensive tool compared to its competitor."
"The paid version of ScyllaDB is not that expensive. The main advantage of the paid version is direct support from the ScyllaDB team, which can resolve issues faster—typically within a day, compared to two to three days with the free version. The paid version also offers better guidance and support, while the free version has good documentation and is more high-level. I’d rate their support team nine out of ten because of the quick responses from their community."
"I believe that there is a yearly licensing cost and that it's expensive."
"It's a bit expensive."
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Top Industries

By visitors reading reviews
Financial Services Firm
21%
Computer Software Company
15%
Retailer
6%
Comms Service Provider
6%
Computer Software Company
17%
Financial Services Firm
14%
Comms Service Provider
8%
Hospitality Company
6%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
 

Questions from the Community

What do you like most about Cassandra?
The use of Cassandra in real-time data analytics has been pivotal for our e-commerce platform. As our platform operates 24/7, providing services to sellers and customers alike, the need for real-ti...
What needs improvement with Cassandra?
While Cassandra can handle NoSQL, I think there should be more flexibility for whole schema design when data is stored in wide columns. Additionally, I believe that eventual consistency should be e...
What do you like most about Scylla?
The performance aspects of Scylla are good, as always... A good point about Scylla is that it can be used extensively.
What is your experience regarding pricing and costs for Scylla?
The enterprise version comes with a cost of about $300,000 per year, however, we did not experience the promised compaction benefits.
What needs improvement with Scylla?
From a sales pitch standpoint, it needs to deliver on promises of better ROI and compaction. Additionally, ticketing and support systems could be improved due to the time it takes to get answers. T...
 

Comparisons

 

Overview

 

Sample Customers

1. Apple 2. Netflix 3. Facebook 4. Instagram 5. Twitter 6. eBay 7. Spotify 8. Uber 9. Airbnb 10. Adobe 11. Cisco 12. IBM 13. Microsoft 14. Yahoo 15. Reddit 16. Pinterest 17. Salesforce 18. LinkedIn 19. Hulu 20. Airbnb 21. Walmart 22. Target 23. Sony 24. Intel 25. Cisco 26. HP 27. Oracle 28. SAP 29. GE 30. Siemens 31. Volkswagen 32. Toyota
IBM, Investing.com, mParticle, Comcast, GE, Fanatics, Ola, CERN, adgear, Samsung
Find out what your peers are saying about Cassandra vs. ScyllaDB and other solutions. Updated: June 2025.
856,873 professionals have used our research since 2012.