ScyllaDB is the next-generation Apache Cassandra compatible database. Its user list of IBM, Zenly, Snapfish, AdGear, etc, is in itself a testament to its excellence. With an installer for every platform, the reader has an open invitation to give it a try.
Loved by its community of users, Apache Cassandra is widely accepted as the best highly available distributed database. With roots in both Dynamo and Bigtables, it represents 15 years of progress. However, while Cassandra is known for flexible replication, multidata centre support and gigantic homogeneous clusters, its many issues are well known too. At times, one feels that Cassandra is a victim of its own success.
At ScyllaDB, we set our sights on delivering an open source alternative to Cassandra — one that’s rebuilt from the ground up, to deliver higher throughput, to maintain consistently low latencies and to reduce the time users spend tuning their databases. At the same time, we wanted to preserve all the things the Cassandra community loves.
Once we’d decided what we wanted to build, we had to make several important decisions about how we’d go about building it. Here, I’ll share the seven fundamental design decisions we made when architecting a better performing Cassandra and the results those decisions have had on our open source project.
Design decision 1: C++ instead of Java
We didn’t have to think long before making this initial design decision. Most systems professionals understand that Java isn’t a good language for systems programming. Why? Because it deprives the user of control. A modern database requires the ability to use large amounts of memory and to have precise control over what the computer is doing at any time. Java isn’t well suited to address either of these requirements. However, C++ serves both purposes well. It not only gives developers very precise control over everything that they might want to do, but it also allows the creation of abstractions, which lets you create complex code in a manageable way.
This story is from the March 2018 edition of Open Source For You.
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This story is from the March 2018 edition of Open Source For You.
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