Hazelcast Installation and Use

Hazelcast is an open source distributed memory caching system that can be used to store and manage data in a cluster. The following is an introduction to the installation and use of Hazelcast. ###Install Hazelcast Firstly, from the Hazelcast official website（ https://hazelcast.com/ ）Download the latest version of Hazelcast. 2. Unzip the downloaded files to the directory of your choice. ###Configure Hazelcast 1. Enter the decompression directory of Hazelcast, locate the 'hazelcast. xml' file, and open it using a text editor. 2. Under the '<network>' tab, configure the cluster port. For example, set 'port' to 5701. <network> ... <port auto-increment="true" port-count="100">5701</port> ... </network> 3. According to the requirements, configure other optional Hazelcast parameters, such as'<cluster members>','<discovery strategies>', etc. 4. Save and close the 'hazelcast. xml' file. ###Using Hazelcast The following is an example code for inserting, modifying, querying, and deleting data using Hazelcast: ####1 Create Hazelcast instance import com.hazelcast.core.Hazelcast; import com.hazelcast.core.HazelcastInstance; HazelcastInstance hazelcastInstance = Hazelcast.newHazelcastInstance(); ####2 Obtain Map data structure import com.hazelcast.core.HazelcastInstance; import com.hazelcast.core.IMap; IMap<String, String> map = hazelcastInstance.getMap("myMap"); ####Data insertion and modification map.put("key1", "value1"); map.put("key2", "value2"); map.put("key3", "value3"); map.put("key1", "updatedValue"); ####Data Query String value = map.get("key1"); System. out. println (value)// Output: updatedValue ####Data deletion map.remove("key3"); ####Shutdown Hazelcast cluster hazelcastInstance.shutdown(); The above example shows how to install Hazelcast, configure Hazelcast instances, and create, modify, query, and delete data. You can perform more operations based on actual needs, such as using other data structures, configuring persistence, setting expiration times, and so on. For more information on the functions and usage of Hazelcast, please refer to the official documentation.