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When is YugabyteDB a good fit?
YugabyteDB is a good fit for cloud native applications that need to serve mission-critical data reliably, with zero data loss, high availability and low latency. Common use cases include:
Distributed Online Transaction Processing (OLTP) applications needing multi-region scalability without compromising strong consistency and low latency. E.g. User identity, Retail product catalog, Financial data service.
Hybrid Transactional/Analytical Processing (HTAP), also known as Translytical, applications needing real-time analytics on transactional data. E.g User personalization, fraud detection, machine learning.
Streaming applications needing to efficiently ingest, analyze and store ever-growing data. E.g. IoT sensor analytics, time series metrics, real time monitoring.
A few such use cases are detailed here .
When is YugabyteDB not a good fit?
Can I deploy YugabyteDB to production?
Yes, YugabyteDB is production-ready starting with the 1.0 release in May 2018.
What is the definition of the "Beta" feature tag?
Some features are marked Beta in every release. Following are the points to consider:
Code is well tested. Enabling the feature is considered safe. Enabled by default.
Support for the overall feature will not be dropped, though details may change in incompatible ways in a subsequent beta or GA release.
Recommended only for non-production use.
Please do try our beta features and give feedback on them.
Any performance benchmarks available?
Yahoo Cloud Serving Benchmark (YCSB) is a popular benchmarking framework for NoSQL databases. We benchmarked Yugabyte Cloud QL (YCQL) API against standard Apache Cassandra using YCSB. YugabyteDB outperformed Apache Cassandra by increasing margins as the number of keys (data density) increased across all the 6 YCSB workload configurations.
Netflix Data Benchmark (NDBench) is another publicly available, cloud-enabled benchmark tool for data store systems. We ran NDBench against YugabyteDB for 7 days and observed P99 and P995 latencies that were orders of magnitude less than that of Apache Cassandra.
Details for both the above benchhmarks are published in Building a Strongly Consistent Cassandra with Better Performance .
What about correctness testing?
Jepsen is a widely used framework to evaluate databases’ behavior under different failure scenarios. It allows for a database to be run across multiple nodes, and create artificial failure scenarios, as well as verify the correctness of the system under these scenarios. We have developed our own Jepsen test suite that cover failure scenarios involving single faults, random partition, majority ring partition and clock skew. We are pleased to report that YugabyteDB 1.1 passes these Jepsen tests. For a detailed report on these test results and our future plans, please review the Jepsen Testing on YugabyteDB blog post.
Is the Community Edition open source?
Yes, the Community Edition is a completely open source, fully functioning version of YugabyteDB. It is licensed under Apache 2.0 and the source is available on GitHub .
How do the Community Edition and the Enterprise Edition differ from each other?
Community Edition is the best choice for the startup organizations with strong technical operations expertise looking to deploy YugabyteDB into production with traditional DevOps tools.
Enterprise Edition includes all the features of the Community Edition as well as additional features such as built-in cloud native operations, enterprise-grade deployment options and world-class support. It is the simplest way to run YugabyteDB in mission-critical production environments with one or more regions (across both public cloud and on-premises datacenters).
A more detailed comparison of the two editions is available here .
How does YugabyteDB compare to other SQL and NoSQL databases?
- Amazon DynamoDB
- Apache Cassandra
- Google Cloud Spanner
- Azure Cosmos DB
- Apache HBase
- Redis In-Memory Store
Why not use a Redis cluster alongside a sharded SQL cluster?
Independent cache and database clusters should be avoided for multiple reasons.
Development and operational complexity
Sharding has to be implemented at two tiers. Scale out (expanding/shrinking the cluster) has to be re-implemented twice - once at the Redis layer and again for the sharded SQL layer. You need to also worry about resharding the data in the Redis layer. The application has to be aware of two tiers, move data between them, deal with consistency issues, etc. It has to write to Redis and sharded SQL, read from Redis, deal with staleness of data, etc.
Typically not all the data needs to be cached, and the cache has to adapt to the query pattern. Most people deploying Redis this way end up caching all the data. Some queries need to be answered with low latency from the cache, and others are longer running queries that should not pollute the cache. This is hard to achieve if two systems deal with different access patterns for the same data.
Cross-DC administration complexity
You need to solve all the failover and failback issues at two layers especially when both sync and async replicas are needed. Additionally, the latency/consistency/throughput tracking needs to be done at two levels, which makes the app deployment architecture very complicated.