Hazelcast – Quick Guide Hazelcast – Introduction Distributed In-memory Data Grid A data grid is a superset to distributed cache. Distributed cache is typically used only for storing and retrieving key-value pairs which are spread across caching servers. However, a data grid, apart from supporting storage of key-value pairs, also supports other features, for example, […]
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Hazelcast – Collection Listener Hazelcast supports addition of listeners when a given collection, for example, queue, set, list, etc. is updated. Typical events include entry added and entry removed. Let”s see how to implement a set listener via an example. So, let”s say we want to implement a listener which tracks the number of elements […]
Hazelcast – Map Reduce & Aggregations MapReduce is a computation model which is useful for data processing when you have lots of data and you need multiple machines, i.e., a distributed environment to calculate data. It involves ”map”ing of data into key-value pairs and then ”reducing”, i.e., grouping these keys and performing operation on the […]