Hazelcast can be used to accelerate and scale your SaaS or custom internal applications by increasing throughput and reducing the latency of data accesses on disk-based databases. Add Hazelcast as an in-memory store between your application and your database to handle more users and higher load while improving response times. Updates that your applications make to data in Hazelcast will be passed through to the underlying database to ensure data synchronization.
Hazelcast provides the enterprise-ready capabilities to run your business-critical applications:

Just add more servers and they cluster automatically

Can deploy in backup pairs or even WAN replicated

No single point of failure

Deploy right into the public cloud