Micronaut is a microservice framework for building modular applications. This develops a configuration that bests works with Micronaut.
Documentation: https://micronaut-projects.github.io/micronaut-ignite/snapshot/guide/
Releases: https://github.com/micronaut-projects/micronaut-ignite/releases
Auto-Configuration
Micronaut can span an instance of Ignite automatically. Below we review several configuration options.
Ignite Thick Clients
Ignite Thick Client Bean Configuration
A thick client bean can be configured via the application properties file as follows:
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language | yml |
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title | example config |
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ignite:
enabled: true
client-mode: true
discovery-spi:
static-ip-finder:
enabled: true
addresses:
- "127.0.0.1:47500"
- "127.0.0.1:47501" |
Instead of the static IP finder, you can enable the Kubernetes one if a Micronaut app is deployed in a K8S environment:
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language | yml |
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title | example config |
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ignite:
enabled: true
client-mode: true
discovery-spi:
kubernetes-ip-finder:
enabled: true
namespace: default
service-name: ignite
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Additional configuration can be applied on top of the default configuration by intercepting the bean when its created, Using the BeanCreatedEventListener.
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@Singleton
public class IgniteConfigurationFactoryInterceptor implements BeanCreatedEventListener<DefaultIgniteConfiguration> {
@Override
public DefaultIgniteConfiguration onCreated(BeanCreatedEvent<DefaultIgniteConfiguration> event) {
DefaultIgniteConfiguration configuration = event.getBean();
configuration.setIgniteInstanceName("instance-a");
return configuration;
}
}
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Ignite Cache Configuration
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language | yml |
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title | example config |
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ignite:
enabled: true
cache-configurations:
name:
group-name: string
onheap-cache: boolean
sql-onheap-cache: boolean
eager-ttl: boolean
cache-mode: LOCAL | REPLICATED | PARTITIONED
rebalance-mode: SYNC | ASYNC | NONE
data-region-name: string
key-type: java.Object
value-type: java.Object
second:
group-name: two
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Code Block |
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language | java |
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title | example config |
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@Factory
public class configurationFactory(){
@Singleton
@Bean
@IgnitePrimary
CacheConfiguration<String,String> cacheInstance() {
return new CacheConfiguration<String, String>("my-cache")
.setBackups(10);
}
}
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Ignite Thin Clients - WIP
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language | yml |
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title | Thin Client Configuration |
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ignite-thin-client:
enabled: true
addresses:
- "127.0.0.1:10800"
- "127.0.0.1:10801" |
Micronaut Ignite Cache
Micronaut cache is covered under snapshot documentation. By default, the primary Ignite instance is used for Micronaut cache and the key from for each cache operation will refer to the IgniteCache instance.
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language | java |
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title | IgniteCacheManager |
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collapse | true |
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@Singleton
public class IgniteCacheManager implements DynamicCacheManager<IgniteCache> {
private final Ignite ignite;
private final ConversionService<?> service;
private final ExecutorService executorService;
public IgniteCacheManager(@Primary Ignite ignite,
ConversionService<?> service,
@Named(TaskExecutors.IO) ExecutorService executorService) {
this.ignite = ignite;
this.service = service;
this.executorService = executorService;
}
@NonNull
@Override
public SyncCache<IgniteCache> getCache(String name) {
return new IgniteSyncCache(service, ignite.getOrCreateCache(name), executorService);
}
}
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Micronaut Ignite Application
https://github.com/pollend/micronaut-ignite-sample
Abstract
TDB
Micronaut Caching API
TDB
AutoConfiguration
TDB