zhouxinyu commented on code in PR #4669:
URL: https://github.com/apache/rocketmq/pull/4669#discussion_r932191535
##########
proxy/src/main/java/org/apache/rocketmq/proxy/service/route/TopicRouteService.java:
##########
@@ -64,10 +68,14 @@ public TopicRouteService(MQClientAPIFactory
mqClientAPIFactory) {
config.getTopicRouteServiceThreadPoolQueueCapacity()
);
this.mqClientAPIFactory = mqClientAPIFactory;
- this.topicCache = CacheBuilder.newBuilder()
- .maximumSize(config.getTopicRouteServiceCacheMaxNum())
-
.refreshAfterWrite(config.getTopicRouteServiceCacheExpiredInSeconds(),
TimeUnit.SECONDS)
- .build(new TopicRouteCacheLoader());
+
+ this.topicCache =
Caffeine.newBuilder().maximumSize(config.getTopicRouteServiceCacheMaxNum()).
+
refreshAfterWrite(config.getTopicRouteServiceCacheExpiredInSeconds(),
TimeUnit.SECONDS).
+ executor(cacheRefreshExecutor).build(new CacheLoader<String,
MessageQueueView>() {
+ @Override public @Nullable MessageQueueView load(String topic)
throws Exception {
+ return topicRouteCacheLoader.load(topic);
Review Comment:
Does caffeine have the same error handling process as guava cache?
We must ensure that:
1. TopicRoute info should be discarded if TOPIC_NOT_EXIST occurs.
2. TopicRoute info should be kept if unexpected exceptions occur to tolerate
namesrv failure.
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