Redis Cache invalidation Strategies in Java Spring
I'm adding Redis to our Spring project and want to determine a suitable caching strategy. I am considering caching the result at the Controller's endpoint/method level for GET requests and invalidating...
View ArticleSetting Up Redis High Availability (HA) on open-shift cluster and virtual...
I have a spring boot application which is deployed on open-shift cluster. The application uses Redis, so for that I have also deployed redis docker image on open-shift registry.This redis image is...
View ArticleSync jedis pipeline peridically
I am working on a project where I need to write a stream of data to redis. I am using jedis clustered client with pipeline. The stream rate could be very fluctuating. So instead of syncing the pipeline...
View Articlewhy object implements serializable when use jpa, cache, session ... etc
https://docs.oracle.com/javase/7/docs/api/java/io/Serializable.htmlWhen and why JPA entities should implement the Serializable interface?According to the Java specification, to write an object in jvm...
View Article@async vs message queue difference
I have a spring boot project, deploying in two servers and using nginx. One method in the project will do:set some key-values in redisinsert something in dbAfter 1, I want to do 2 in async way.One...
View ArticleReactiveRedisOperations is not working in spring boot application
I am using ReactiveRedisOperations as below and it is not storing in Redis.@Autowiredprivate ReactiveRedisOperations<String, String> reactiveRedisOperations;If I used as below it is...
View ArticleHow to use lock/unlock in Redisson?
In our application we use AWS Redis cluster for storing an object which has multiple line items object embedded. We receive updates on individual line items so we fetch it from cache and update them....
View Articleorg.springframework.expression.spel.SpelEvaluationException: EL1005E: Type...
I am trying to cache my method. but getting an error. only on starting time.@Cacheable(value = "TestEngine:Prod::getProdValue", key = "new com.organization.testengine.cache.ProdCacheKey(#p0)", unless =...
View ArticleIs this a faultless use of Redisson’s RScheduledExecutorService for ensuring...
While looking for an alternative to Quartz for scheduling crons in a distributed environment, I stumbled upon Reddison’s RScheduledExeuctorService which was documented (as linked) for specifically that...
View ArticleIs java's setIfAbsent(K,V, ExpiryTimeout) in redis atomic?
According to the documentation, spring data redis's setIfAbsent(K, V) uses setNX command. However, setIfAbsent(K, V, Expiry timeout)seems to useset command, instead of setNX. Does it mean that having...
View ArticleCould not get a resource from the pool(SocketTimeoutException:)
I'm running multiple worker threads(around 10) to access the data from the redis Q.For the i'm using infinte timeout for Jedis Client. Jedis jedis =...
View ArticleRace condition in springframework cache annotation?
I have been using @Cacheable and @CacheEvict in a multithreaded, multi node web app for several years now. As load on the system increases, I am started to notice null's being returned from the...
View ArticleWhat are the notify-keyspace-events in Redis
I started to setup spring project by following this spring-boot article. But suddenly application could not start successfully, instead I am getting the following stack trace:Exception in thread "main"...
View ArticleError in using Redis lettuce Task not serializable
I am using redis lettuce in my SCALA project for simple key value database I just want to use set and get method from this to update my values of column my code is as followsI have created a helper...
View ArticleSpring-Boot 2.7 Redis PUB/SUB fails startup on missing Redis connection
I have this configuration for my pub/sub implementation:@Beanpublic RedisMessageListenerContainer container(LettuceConnectionFactory connectionFactory, MessageListenerAdapter listenerAdapter) {...
View ArticleSet TTL for Redis cache to specific time
I am using RedisCacheManager using spring boot. I want to expire the cache at 23:59:59 everyday i.e end of the day. How can I do that? I can see that it can be done only relatively by using...
View ArticleDisable spring session with redis in integrationtests
I am using spring session with redis, but I want to disable it while doing tests. My class is annotated:@ActiveProfiles("integrationtests")and my application-integrationtests.tml file...
View ArticleJava - How to improve Performance of a function using Redis Cache
I have the below function. I need to improve its performance.I thought of using Redis Cache to achieve the same.public List<Price> loadPrices( List<Product> products ) { List<Price>...
View ArticleredisTemplate.executePiped return empty result for some command
I try to do pipelining by List<Object> resultList = redisTemplate.executePiped(RedisCallBack<?>) backed by Lettuce driver. When pipelining, there are similar commands which will get all...
View Articleclass file for redis.clients.jedis.JedisShardInfo not found
when I upgrade the jedis to version 4.2.3 in gradle.build: api "redis.clients:jedis:4.2.3"show...
View Article