IBM DB2 vs Hazelcast: What are the differences?
Developers describe IBM DB2 as "A family of database server products developed by IBM". DB2 for Linux, UNIX, and Windows is optimized to deliver industry-leading performance across multiple workloads, while lowering administration, storage, development, and server costs. On the other hand, Hazelcast is detailed as "Clustering and highly scalable data distribution platform for Java". With its various distributed data structures, distributed caching capabilities, elastic nature, memcache support, integration with Spring and Hibernate and more importantly with so many happy users, Hazelcast is feature-rich, enterprise-ready and developer-friendly in-memory data grid solution.
IBM DB2 and Hazelcast are primarily classified as "Databases" and "In-Memory Databases" tools respectively.
"Rock solid and very scalable" is the primary reason why developers consider IBM DB2 over the competitors, whereas "High Availibility" was stated as the key factor in picking Hazelcast.
Hazelcast is an open source tool with 3.18K GitHub stars and 1.16K GitHub forks. Here's a link to Hazelcast's open source repository on GitHub.
Yammer, Seat Pagine Gialle, and Para are some of the popular companies that use Hazelcast, whereas IBM DB2 is used by ITAIPU BINACIONAL, XMLi5 Ltd., and Applic8. Hazelcast has a broader approval, being mentioned in 26 company stacks & 16 developers stacks; compared to IBM DB2, which is listed in 7 company stacks and 9 developer stacks.