我的配置用于创建带有连接池的连接工厂。我确实有一个连接池。这个代码的大部分来自于Spring的RedisAutoConfiguration
,但我已经因为特殊原因禁用了它。
@Configuration
@EnableConfigurationProperties(RedisProperties.class)
public class JedisConfiguration implements RedisConfiguration {
@Bean
@Scope("prototype")
@Override
public RedisConnectionFactory connectionFactory(RedisProperties redisProperties) {
return createFactory(redisProperties);
}
private static JedisConnectionFactory applyProperties(RedisProperties properties, JedisConnectionFactory factory) {
factory.setHostName(properties.getHost());
factory.setPort(properties.getPort());
factory.setDatabase(properties.getDatabase());
return factory;
}
private static JedisPoolConfig jedisPoolConfig(RedisProperties properties) {
return Optional.ofNullable(properties.getPool())
.map(props -> {
JedisPoolConfig config = new JedisPoolConfig();
config.setMaxTotal(props.getMaxActive());
config.setMaxIdle(props.getMaxIdle());
config.setMinIdle(props.getMinIdle());
config.setMaxWaitMillis(props.getMaxWait());
return config;
})
.orElseGet(JedisPoolConfig::new);
}
public static JedisConnectionFactory createFactory(RedisProperties properties) {
return applyProperties(properties, new JedisConnectionFactory(jedisPoolConfig(properties)));
}
}
使用案例
我有字符串键"A"
,"B"
,"C"
,分别映射到具有字符串哈希键和哈希值的哈希映射中。这些哈希值是从类A
,B
和C
序列化成JSON得到的。
也就是说,"A"
-> A::toString
-> json(A)
,B
和C
同理。
@Component
public final class UseCase implements InitializingBean {
private static final String A_KEY = "A";
private static final String B_KEY = "B";
private static final String C_KEY = "C";
private final RedisConnectionFactory factory;
private final ObjectMapper objectMapper;
private HashOperations<String, String, A> aMap;
private HashOperations<String, String, B> bMap;
private HashOperations<String, String, C> cMap;
private RedisTemplate<String, ?> template;
private UseCase(RedisConnectionFactory factory, ObjectMapper objectMapper) {
this.factory = factory;
this.objectMapper = objectMapper;
}
private <T> RedisTemplate<String, ?> hashMap(Class<T> vClass) {
RedisTemplate<String, ?> redisTemplate = new RedisTemplate<>();
redisTemplate.setKeySerializer(stringSerializer());
redisTemplate.setHashKeySerializer(stringSerializer());
redisTemplate.setHashValueSerializer(jacksonSerializer(vClass));
return configure(redisTemplate);
}
private <K, V> RedisTemplate<K, V> configure(RedisTemplate<K, V> redisTemplate) {
redisTemplate.setConnectionFactory(factory);
redisTemplate.setEnableTransactionSupport(true);
redisTemplate.afterPropertiesSet();
return redisTemplate;
}
private <T> RedisSerializer<T> jacksonSerializer(Class<T> clazz) {
Jackson2JsonRedisSerializer<T> serializer = new Jackson2JsonRedisSerializer<>(clazz);
serializer.setObjectMapper(objectMapper);
return serializer;
}
private RedisSerializer<String> stringSerializer() {
return new StringRedisSerializer();
}
@Override
public void afterPropertiesSet() throws Exception {
template = hashMap(String.class);
aMap = hashMap(A.class).opsForHash();
bMap = hashMap(B.class).opsForHash();
cMap = hashMap(C.class).opsForHash();
}
void put(A a, B b, C c) {
template.multi();
aMap.put(A_KEY, a.toString(), a);
bMap.put(B_KEY, b.toString(), b);
cMap.put(C_KEY, c.toString(), c);
template.exec();
}
A getA(String aKey) {
return aMap.get(A_KEY, aKey);
}
}
期望
- 通过一个连接执行put操作,并在连接丢失或损坏时失败。
- 对于put操作,应在multi调用时获取连接,并在exec调用后将其返回到池中。
- 对于getA操作,在执行后将连接返回到池中。
我有测试来证明第1点的有效性,但对于最后两个点我还有些怀疑。经过调试,我观察到在这两个操作后连接没有被返回到池中,导致池在用尽时阻塞。
虽然已尝试返回连接,但由于以下两个分支失败,未能成功调用。取自RedisConnectionUtils
。
// release transactional/read-only and non-transactional/non-bound connections.
// transactional connections for read-only transactions get no synchronizer registered
if (isConnectionTransactional(conn, factory)
&& TransactionSynchronizationManager.isCurrentTransactionReadOnly()) {
unbindConnection(factory);
} else if (!isConnectionTransactional(conn, factory)) {
if (log.isDebugEnabled()) {
log.debug("Closing Redis Connection");
}
conn.close();
}
问题
- 我做错了什么?
- 为什么连接没有返回到池中?
- 我该怎么解决这个问题,以便将连接返回到池中?
execute
。 - Raniz