提前写入缓存会导致CacheWriterException

Question

我正在尝试对启用了预写的点火缓存进行一些简单的基准测试（使用JMH）。 直写正常，但可以写出预写错误。

我收到CacheWriterException，并且连接池正在超时。 数据源是Spring Boot配置的默认hikari datasource（可与直写一起正常使用）。

点燃缓存配置

 CacheConfiguration<Long, Customer> customerWriteAheadCacheCfg = new CacheConfiguration<(CacheName.WRITE_AHEAD.getCacheName());
 customerWriteAheadCacheCfg.setIndexedTypes(Long.class, Customer.class);
 customerWriteAheadCacheCfg.setWriteThrough(true);
 customerWriteAheadCacheCfg.setWriteSynchronizationMode(CacheWriteSynchronizationMode.FULL_SYNC);
 customerWriteAheadCacheCfg.setAtomicityMode(CacheAtomicityMode.TRANSACTIONAL);
 customerWriteAheadCacheCfg.setWriteBehindEnabled(true);
 customerWriteAheadCacheCfg.setWriteBehindBatchSize(50);

存储和实体配置

CacheJdbcPojoStoreFactory<Long, Customer> customerPojoFactory1 = new CacheJdbcPojoStoreFactory<>();
customerPojoFactory1.setDataSourceBean("dataSource");
customerPojoFactory1.setDialect(new BasicJdbcDialect());
JdbcType customerPojoType1 = new JdbcType();
customerPojoType1.setCacheName(CacheName.WRITE_AHEAD.getCacheName());
customerPojoType1.setKeyType(Long.class);
customerPojoType1.setValueType(Customer.class);
customerPojoType1.setDatabaseTable("customer");
customerPojoType1.setKeyFields(new JdbcTypeField(Types.INTEGER, "id", Long.class, "id"));
customerPojoType1.setValueFields(
           new JdbcTypeField(Types.VARCHAR, "name", String.class, "name"),
           new JdbcTypeField(Types.VARCHAR, "type", String.class, "type")
);
customerPojoFactory1.setTypes(customerPojoType1);

对于基准测试，我只是在缓存中使用put

public void saveToCacheWriteAhead(Customer customer) {
    waCache.put(customer.getId(), customer);
}

关于可能导致错误的原因有什么想法？

Answer 1

“连接不可用”可能意味着连接池已满。 如果提前写入，则在每个写入线程中打开一个连接。 因此，最大连接数应至少为写入线程数。