PerconaXtraDBCluster vs Scylla: What are the differences?
What is PerconaXtraDBCluster? Percona XtraDB Cluster is an active/active high availability and high scalability open source solution for MySQL® clustering. Percona XtraDB Cluster is an active/active high availability and high scalability open source solution for MySQL® clustering. It integrates Percona Server and Percona XtraBackup with the Codership Galera library of MySQL high availability solutions in a single package that enables you to create a cost-effective MySQL high availability cluster.
What is Scylla? Next Generation Cassandra. Real-time big data database, with scale-up performance of 1,000,000 IOPS per node, scale-out to 100s of nodes and 99 latency of less than 1 msec.
PerconaXtraDBCluster and Scylla can be categorized as "Databases" tools.
Scylla is an open source tool with 5.18K GitHub stars and 615 GitHub forks. Here's a link to Scylla's open source repository on GitHub.