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Cassandra vs Flyway: What are the differences?
Key Differences between Cassandra and Flyway
Cassandra and Flyway are two popular tools in the world of databases, although they serve different purposes. Here are the key differences between Cassandra and Flyway:
Data Model: Cassandra is a NoSQL database that uses a wide column data model, making it ideal for handling large amounts of data with varying structures. On the other hand, Flyway is a database migration tool that focuses on managing and automating the process of database schema changes in SQL-based databases.
Purpose: Cassandra is designed for use cases that require high scalability and high availability, such as big data and real-time applications. It excels at handling large amounts of data distributed across multiple servers. Flyway, on the other hand, is primarily used for managing and versioning database schema changes during the software development lifecycle.
Query Language: Cassandra uses Cassandra Query Language (CQL), which is a SQL-like language specifically designed for interacting with the Cassandra database. Flyway, on the other hand, primarily relies on standard SQL for executing database migration scripts.
Consistency Model: Cassandra uses a tunable consistency model, where users can specify the level of consistency they desire for their operations. It allows for eventual consistency and supports tunable consistency levels. Flyway, being a database migration tool, does not impose any consistency model as it focuses on executing predefined SQL migration scripts.
Replication: Cassandra provides built-in support for replication, allowing data to be replicated across multiple nodes for high availability and fault tolerance. Replication strategies can be configured to define how the data is distributed and replicated in the cluster. Flyway, on the other hand, does not deal with replication as it is more focused on managing schema changes.
Usage Scenarios: Due to its scalability and high availability features, Cassandra is often used in use cases where real-time access to big data is required, such as social media platforms and IoT applications. Flyway, on the other hand, is widely used in software development processes to ensure consistent and automated database schema versioning and migration.
In summary, Cassandra is a NoSQL database designed for handling large amounts of distributed data, while Flyway is a database migration tool focused on managing and automating schema changes in SQL-based databases during software development.
The problem I have is - we need to process & change(update/insert) 55M Data every 2 min and this updated data to be available for Rest API for Filtering / Selection. Response time for Rest API should be less than 1 sec.
The most important factors for me are processing and storing time of 2 min. There need to be 2 views of Data One is for Selection & 2. Changed data.
Scylla can handle 1M/s events with a simple data model quite easily. The api to query is CQL, we have REST api but that's for control/monitoring
i love syclla for pet projects however it's license which is based on server model is an issue. thus i recommend cassandra
Cassandra is quite capable of the task, in a highly available way, given appropriate scaling of the system. Remember that updates are only inserts, and that efficient retrieval is only by key (which can be a complex key). Talking of keys, make sure that the keys are well distributed.
By 55M do you mean 55 million entity changes per 2 minutes? It is relatively high, means almost 460k per second. If I had to choose between Scylla or Cassandra, I would opt for Scylla as it is promising better performance for simple operations. However, maybe it would be worth to consider yet another alternative technology. Take into consideration required consistency, reliability and high availability and you may realize that there are more suitable once. Rest API should not be the main driver, because you can always develop the API yourself, if not supported by given technology.
Pros of Cassandra
- Distributed119
- High performance98
- High availability81
- Easy scalability74
- Replication53
- Reliable26
- Multi datacenter deployments26
- Schema optional10
- OLTP9
- Open source8
- Workload separation (via MDC)2
- Fast1
Pros of Flyway
- Superb tool, easy to configure and use13
- Very easy to config, great support on plain sql scripts9
- Is fantastic and easy to install even with complex DB6
- Simple and intuitive4
- Easy tool to implement incremental migration1
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Cons of Cassandra
- Reliability of replication3
- Size1
- Updates1
Cons of Flyway
- "Undo Migrations" requires pro version, very expensive3
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