Ehcache

Ehcache / Hibernate and RMI replication with large number of entities

由 故事扮演 提交于 2019-12-09 16:26:40
问题 I'm currently investigating how to use the RMI distribution option in ehcache. I've configured properly ehcache.xml and replication seems to work fine. However I've 2 questions: -> It seems ehcache/ hibernate creates 1 cache per Entity. This is fine, however when replication is in place it create 1 thread / cache to replicate. Is this the intended behavious ? As our domain is big, it creates about 300 threads, which seems to me really big -> Another nasty consequence is that the heartbeat

Load EhCache diskstore content into memory

由 半世苍凉 提交于 2019-12-09 16:11:26
问题 As said in EhCache documentation: In practice this means that persistent in-memory cache will start up with all of its elements on disk . [...] So, the Ehcache design does not load them all into memory on start up, but lazily loads them as required. I would like that the memory cache start up will all its elements in memory, how can I achieve that? The reason for this is that our website performs a lot of access to the cache, so the first time we visit the website it has very bad response

Ehcache Vs Static map cache implementation

由 随声附和 提交于 2019-12-09 12:41:32
问题 I have few tables with very few entries in them and they will never change dynamically . so i want to cache the whole table in memory to reduce load on DB. I can easily achieve that by a static Map and populating the map in a static block. i was wondering whether the same is possible in a more effective way by Ehcache + hibernate? 回答1: The advantage of a real second-level cache over a static map is that you get the advantage of in-memory access by still keeping the same way of defining,

Can same Ehcache object of same CacheManager be used by multiple threads?

由 被刻印的时光 ゝ 提交于 2019-12-09 06:52:27
I have created a Cache object which stores a String as the key and a serialized object as the value. Cache(String--->Object) I am trying to run three Akka threads which retrieve and write into the same Ehcache object in a synchronized way. Thread 1- synchronized (LockForEhcache){ serializedObj = cachename.get("key"); //--- this returns an Object } //modify the serializedObj here.... //Again store the modify Object in the Cache synchronized (LockForEhcache){ cachename.clear(); cachename.put("key",serializedObj); Thread 2- synchronized (LockForEhcache){ serializedObj = cachename.get("key"); //--

Why is my Hibernate Query returning stale data?

由 淺唱寂寞╮ 提交于 2019-12-09 06:45:50
问题 Quick Version Basically, I'm updating a Hibernate Table and subsequent queries are loading a stale value. Detailed Version Hibernate (3.3.1.GA) and EhCache (2.4.2). Persisted Book object with a List<PageContent> of pages and I'm adding a page to the middle of this book. I'm using Databinder/Wicket, though I do not think that is related. public void createPageContent(Book book, int index) { Databinder.getHibernateSession().lock(book, LockMode.UPGRADE); PageContent page = new PageContent(book);

Clustered hibernate cache with ehcache: nonstrict vs. strict read write

由 限于喜欢 提交于 2019-12-09 04:41:14
问题 What is the real difference between nonstrict-read-write and read-write ? I can read ehcache and Hibernate docs, but as far as I can see they only say that "read-write is better if you do updates". I find it unsatisfactory. I may have an issue with long-lived cached collection configured like this: <cache name="trx.domain.Parent.children" maxElementsInMemory="5000" eternal="false" overflowToDisk="false" timeToIdleSeconds="1200" timeToLiveSeconds="1800"> <cacheEventListenerFactory class="net

ehcache with Spring. google code xsd file not found

由 做~自己de王妃 提交于 2019-12-08 19:36:28
问题 I am using ehcache with Spring. Noticed the below error recently. Also the XSD file is missing now at http://ehcache-spring-annotations.googlecode.com/svn/schema/ehcache-spring/ehcache-spring-1.1.xsd. Please let me know if there is a workaround to load the XSD locally. org.xml.sax.SAXParseException; lineNumber: 164; columnNumber: 59; schema_reference.4: Failed to read schema document 'http://ehcache-spring-annotations.googlecode.com/svn/schema/ehcache-spring/ehcache-spring-1.1.xsd', because 1

Unable to disable @Cacheable with YAML Spring Profile

由 一个人想着一个人 提交于 2019-12-08 13:18:46
问题 I created a cache called "mycache" which is applied to a method in my Service like: @Cacheable(value = "mycache") public String getValue(String something) { ...breakpoint here... } I also have the following in my application.yml : --- spring: profiles: dev cache: type: NONE (NOTE: I also tried: none - all lowercase - and that also did not work) And in my class I have a field that shows me it is the "dev" profile: @Value("${spring.profiles.active}") private String activeProfiles; When I call

How can I make Ehcache never evict from diskstore?

由 徘徊边缘 提交于 2019-12-08 09:09:19
问题 I'm trying to configure Ehcache (version 2.5) such that it never forgets items. Here is my initial attempt, but apparently Ehcache will try to protect me from myself by evicting if it runs out of space for the keys. Is there any way for me to configure the Ehcache (the free version) to really store elements for as long as the application is running? If Ehcache might lose elements (without telling me!) then I can't really use it for my purposes. Note that I have orders of magnitude more heap

EhCache to put new element to disk if memory store full

由 二次信任 提交于 2019-12-08 08:36:47
问题 I would like to use EhCache in combination of memory and disk cache. EhCache should move new elements to disk when memory is full. e.g. I have 100 elements in ehCache memory store and tries to put 101st element and if memory is full then put 101st element to disk not 1st element. Could you please let me know the cache configuration to achieve this? 回答1: Ehcache no longer works that way. The tiering model introduced in Ehcache 2.6 and used since then will always store ALL mappings into the
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