hazelcast | 易学教程

Hazelcast member discovery with PCF Registry Service and hazelcast-eureka-plugin

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问题 Running several instances of application with embedded hazelcast on PCF. My goal is to chain hazelcast members into cluster. For purpose of member discovery I am using hazelcast-eureka plugin . I am able to achieve member discovery using simple Eureka Server app, passing eureka URL to hazelcast-eureka plugin , using this example. Now I want to use PCF Registry Service instead of Eureka Server app. For that purpose I am using EurekaOneDiscoveryStrategyFactory with EurekaClient autowired which

Hazelcast member discovery with PCF Registry Service and hazelcast-eureka-plugin

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HazelcastJsonValue in the model class

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问题 How to use HazelcastJsonValue in the model class public class User implements Serializable{ /** * */ private static final long serialVersionUID = 1L; private String id; private String name; private HazelcastJsonValue value; In the IMap I'm inserting the value some thing like this map.put(i,new User(obj.getId,obj.getName,new HazelcastJsonValue(value.toString))); Its throwing Serialization Exception for HazelcastJsonValue How to resolve this isssue..? 回答1: I can see 2 approaches to resolve this

Behaviour of Vert.x Event-bus when reaching the limit

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问题 I'm missing one piece of understanding of how Event Bus / Hazelcast works. Imagine a case with a consumer and a producer verticles communicating over the clustered EB. The consuming part is doing CPU / memory / IO-intensive calculations. When at some point due to the load the consumer is not able to handle the messages immediately, what is going to happen? Would the messages be queueed inside the ring-buffer and eventually be processed later (considering Netty's SingleThreadEventLoop limits

Behaviour of Vert.x Event-bus when reaching the limit

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Sort the Hazelcast json value in java

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来源： https://stackoverflow.com/questions/64242232/sort-the-hazelcast-json-value-in-java

why hazelcast not query incorrect result with imap and hazelcastjsonvalue include chinese character？

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来源： https://stackoverflow.com/questions/63607692/why-hazelcast-not-query-incorrect-result-with-imap-and-hazelcastjsonvalue-includ

Spring Boot Sample 020之spring-boot-data-cache

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一、环境 Idea 2020.1 JDK 1.8 maven 二、目的 spring boot整合cache gitHub地址： https://github.com/ouyushan/ouyushan-spring-boot-samples 三、步骤 3.1、点击File -> New Project -> Spring Initializer，点击next 3.2、在对应地方修改自己的项目信息 3.3、选择Web依赖，选中Spring Web、Spring Boot Actuator。可以选择Spring Boot版本，本次默认为2.2.7，点击Next 3.4、项目结构四、添加文件 pom.xml文件 <?xml version="1.0" encoding="UTF-8"?> <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd"> <modelVersion>4.0.0</modelVersion> <parent>

Preventing unauthorized member for joining Hazelcast cluster

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问题 We are changing one of our application to use Hazelcast 3.11 Community Edition and do some locking between multiple JVMs running on a few hosts. We configure our cluster grammatically like below: public class HazelcastBuilder { private final String name; private final String password; private final String members; private final String hostName; private final String applicationName; public HazelcastInstance getHazelcastInstance() { Config hazelcastConfig = new Config(); GroupConfig groupConfig

Store and filter on list of values for a key in Hazelcast

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问题 My database call returns a list of values for a key and I need to use Hazelcast as a cache in spring to store these values. I am able to store it as (key, List) in IMap but by doing so I am unable to apply filters on these items for a key using something like Predicates for Hazelcast. I would also like it to support pagination for the list of values. Already heard something about MultiMaps but unable to configure the same in springboot and also unsure whether it siffices the above use case.