Hazelcast
By Hazelcast, Inc
Scalability and Performance: Hazelcast is frequently praised for its ability to scale efficiently and provide high availability clusters. Many users find its in-memory data grid to be highly performant, particularly for applications requiring real-time data processing.
Ease of Integration: Users highlight its seamless integration capabilities with other systems, including compatibility with various cloud platforms like AWS and Google Cloud. Its unified real-time data platform, combining stream processing and data grid features, is appreciated for simplifying complex data workflows.
Documentation and API: The API is considered intuitive and easy to use, with well-structured documentation and examples aiding quick adoption and implementation.
Community Support and Open Source Features: Hazelcast's open-source roots and the active community are valued by developers who prefer customizable and collaborative tools.
Enterprise Licensing: One of the most common criticisms is the shift of several core features (such as security and replication) to the enterprise license tier. Long-time users have expressed frustration that basic functionalities available in earlier open-source versions are now behind a paywall.
Resource Intensive: Some users mention that Hazelcast can be resource-intensive, which may impact performance for smaller deployments or in resource-constrained environments.
Complex Configuration: While the platform offers extensive customization, new users might find its setup and configuration complex and time-consuming without sufficient expertise.
