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Stable release
5.3.6 / November 9, 2023; 7 months ago (2023-11-09)[1]
Written inJava
Typein-memory data grid, Data structure store
LicenseHazelcast: Apache 2.0,[2] Hazelcast Enterprise: Proprietary

In computing, Hazelcast is a unified real-time data platform[3] based on Java that combines a fast data store with stream processing. It is also the name of the company developing the product. The Hazelcast company is funded by venture capital and headquartered in Palo Alto, California.[4][5][6]

In a Hazelcast grid, data is evenly distributed among the nodes of a computer cluster, allowing for horizontal scaling of processing and available storage. Backups are also distributed among nodes to protect against failure of any single node.

Hazelcast can run on-premises, in the cloud (Amazon Web Services, Microsoft Azure, Cloud Foundry, OpenShift), virtually (VMware), and in Docker containers. The Hazelcast Cloud Discovery Service Provider Interface (SPI) enables cloud-based or on-premises nodes to auto-discover each other.

The Hazelcast platform can manage memory for many types of applications. It offers an Open Binary Client Protocol to support APIs for any binary programming language. The Hazelcast and open-source community members have created client APIs for programming languages that include Java, .NET, C++, Python, Node.js and Go.[7]


Typical use-cases for Hazelcast include:

Vert.x utilizes it for shared storage.[9]

Hazelcast is also used in academia and research as a framework for distributed execution and storage.

See also


  1. ^ "Release v5.3.6". GitHub. Retrieved 2023-12-20.
  2. ^ "Licensing". Hazelcast Reference Manual.
  3. ^ "Streaming and IMDG Coming Together: Hazelcast Platform 5.0 is Released!". Hazelcast. Retrieved 2021-07-14.
  4. ^ "Home". Hazelcast. Retrieved 2022-08-16.
  5. ^ Penchikala, Srini (2013-09-18). "Java In-Memory Grid Hazelcast gets VC Funding from Bain Capital". Retrieved 2013-12-11.
  6. ^ Novet, Jordan (2014-09-18). "Hazelcast adds $11M to grow its business based on an open-source in-memory data grid". VentureBeat. Retrieved 2020-12-28.
  7. ^ "Hazelcast Clients". Hazelcast Platform Reference Manual.
  8. ^ "Memcache Client". Hazelcast IMDG Reference Manual.
  9. ^ Kim, Jaehong (2017-06-16). "Understanding Vert.x Architecture - Part II". Retrieved 2020-12-28.
  10. ^ Kathiravelu, Pradeeban; Veiga, Luís (9 September 2014). Concurrent and Distributed CloudSim Simulations. IEEE 22nd International Symposium on Modelling, Analysis & Simulation of Computer and Telecommunication Systems (MASCOTS). Paris. pp. 490–493. CiteSeerX doi:10.1109/MASCOTS.2014.70.
  11. ^ Kathiravelu, Pradeeban; Veiga, Luís (8 December 2014). An Adaptive Distributed Simulator for Cloud and MapReduce Algorithms and Architectures. IEEE/ACM 7th International Conference on Utility and Cloud Computing (UCC), 2014. London. pp. 79–88. doi:10.1109/UCC.2014.16.
  12. ^ Dixit, Advait Abhay; Hao, Fang; Mukherjee, Sarit; Lakshman, TV; Kompella, Ramana (20 October 2014). ElastiCon: an elastic distributed sdn controller. Tenth ACM/IEEE symposium on Architectures for networking and communications systems. pp. 17–28. Retrieved 2020-12-28.
  13. ^ Kathiravelu, Pradeeban; Galhardas, Helena; Veiga, Luís (28 October 2015). ∂u∂u Multi-Tenanted Framework: Distributed Near Duplicate Detection for Big Data. On the Move to Meaningful Internet Systems: OTM 2015 Conferences. Rhodes, Greece. pp. 237–256. doi:10.1007/978-3-319-26148-5_14.