我有两个客户端和一个服务器。
[14:02:16] Topology snapshot [ver=8, servers=1, clients=2, CPUs=8, heap=7.8GB]
我创建了一个复制的缓存,我希望这两个实例都可以访问相同的令牌缓存,即一个客户端添加的令牌可以被另一个客户端读取,反之亦然。
private IgniteCache<Long, CacheToken> getOrCreateCache() {
CacheConfiguration<Long, CacheToken> tokenCacheConfig = new CacheConfiguration<>(REVOCATION_CACHE);
tokenCacheConfig.setCacheMode(CacheMode.REPLICATED);
tokenCacheConfig.setIndexedTypes(Long.class, CacheToken.class);
tokenCacheConfig.setExpiryPolicyFactory(CreatedExpiryPolicy.factoryOf(Duration.THIRTY_MINUTES));
return ignite.getOrCreateCache(tokenCacheConfig);
}
当我查看缓存时,我实际看到的是创建了两个具有相同名称的独立缓存,而不是复制。
Nodes for: TOKEN_REVOCATION_LIST(@c2)
+==============================================================================================+
| Node ID8(@), IP | CPUs | Heap Used | CPU Load | Up Time | Size | Hi/Mi/Rd/Wr |
+==============================================================================================+
| 0794F94D(@n2), xx.xx.xx.xx | 8 | 22.79 % | 0.03 % | 00:54:44:853 | 14 | Hi: 0 |
| | | | | | | Mi: 0 |
| | | | | | | Rd: 0 |
| | | | | | | Wr: 0 |
+----------------------------+------+-----------+----------+--------------+------+-------------+
| 7B9F7E25(@n1), xx.xx.xx.xx | 8 | 23.12 % | 0.13 % | 00:55:00:366 | 0 | Hi: 0 |
| | | | | | | Mi: 0 |
| | | | | | | Rd: 0 |
| | | | | | | Wr: 0 |
+----------------------------+------+-----------+----------+--------------+------+-------------+
| E7321C6D(@n0), xx.xx.xx.xx | 8 | 6.90 % | 0.03 % | 00:55:08:795 | 0 | Hi: 0 |
| | | | | | | Mi: 0 |
| | | | | | | Rd: 0 |
| | | | | | | Wr: 0 |
+----------------------------------------------------------------------------------------------+
我希望看到的行为是一个共享缓存,或者至少是跨节点复制的令牌。在每个节点中,我可以读取节点写入的值,但不能跨节点读取。
我应该对配置进行哪些更改才能完成共享的复制缓存?有这方面的例子吗?
@Configuration
public class IgniteConfig {
@Bean
public Ignite ignite() {
return Ignition.start(igniteConfiguration());
}
@Bean
public JdbcDataSource h2ExampleDb() {
JdbcDataSource ds = new JdbcDataSource();
ds.setURL("jdbc:h2:tcp://localhost/mem:ExampleDb");
ds.setUser("sa");
return ds;
}
@Bean
public IgniteConfiguration igniteConfiguration() {
IgniteConfiguration ic = new IgniteConfiguration();
ic.setClientMode(true);
ic.setPeerClassLoadingEnabled(true);
ic.setIncludeEventTypes(getEventTypes());
ic.setDiscoverySpi(discoverySpi());
ic.setCacheConfiguration(cacheConfiguration());
return ic;
}
public CacheConfiguration cacheConfiguration() {
CacheConfiguration cc = new CacheConfiguration();
cc.setCacheMode(CacheMode.REPLICATED);
return cc;
}
public int[] getEventTypes() {
int[] eventTypes = {
EventType.EVT_TASK_STARTED,
EventType.EVT_TASK_FINISHED,
EventType.EVT_TASK_FAILED,
EventType.EVT_TASK_TIMEDOUT,
EventType.EVT_TASK_SESSION_ATTR_SET,
EventType.EVT_TASK_REDUCED,
EventType.EVT_CACHE_OBJECT_PUT,
EventType.EVT_CACHE_OBJECT_READ,
EventType.EVT_CACHE_OBJECT_REMOVED,
EventType.EVT_CLIENT_NODE_RECONNECTED,
EventType.EVT_CACHE_OBJECT_EXPIRED
};
return eventTypes;
}
@Bean
public TcpDiscoverySpi discoverySpi() {
TcpDiscoverySpi spi = new TcpDiscoverySpi();
spi.setIpFinder(tdif());
return spi;
}
@Bean
public TcpDiscoveryMulticastIpFinder tdif() {
TcpDiscoveryMulticastIpFinder finder = new TcpDiscoveryMulticastIpFinder();
List<String> addresses = new ArrayList<>();
addresses.add("127.0.0.1:47500..47509");
finder.setAddresses(addresses);
return finder;
}
}
答案 0 :(得分:3)
客户端节点不存储分布式缓存(复制或分区)的数据。您只需要一个副本,因为您只有一个服务器节点。只需启动更多服务器节点,您就会看到缓存是在所有服务器节点上复制的。