Blog ›Hazelcast with hundreds of clients

By Enes Akar

Co-founder & CTO, Hazelcast Cloud

Enes was one of the early developers of Hazelcast. He joined the company in 2011 with a passion for making distributed computing incredible simple. From 2012 to 2017, he headed the engineering team as VP of Engineering. Since 2017, he has led the development of Hazelcast Cloud, which is enterprise-grade Hazelcast software as a fully managed service in the cloud. Prior to joining Hazelcast, Enes worked in software development and software engineering at telecommunications companies, including Alcatel-Lucent and Ericsson. He holds a Bachelor of Science in Computer Engineering and an MBA from Bogazici University, Istanbul.

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Feb 28, 2014

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Hazelcast with hundreds of clients

If you plan a Hazelcast architecture scaling up to hundreds of clients, the following points are important:

– Stability of your network environment. In AWS, hosting clients and servers in same zones will help you.
– The server should be powerful enough. CPU, number of cores etc.
– Use client near cache. It will decrease network overhead.
– Prefer version 3.2. It has more scalable client architecture.
– You can try increasing number of threads in client executor pool (default is core size * 5)
clientConfig.setExecutorPoolSize(40); // also available in client-config.xml