ehcache-bigmemory | 易学教程

Ehcache avoid storing sensitive data to disk?

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问题 We want to cache, using Ehcache, sensitive data that should never be stored to disk (data can only reside in main memory). It is the kind of data that is illegal for it to be stored on disk at all and therefore needs to be treated with a certain caution. We are already using Ehcache (both with and without terracotta) for common caching purposes. I know that Ehcache provides the option to cache on both to main memory and to disk, and additionally it allows to overflowtodisk when using main

How to make sure that no one reads from Ehcache Object, while data is being written into the cache?

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问题 I want to store data into the Cache using EhCache , but if I try to access the data before data has been populated into the Cache, I get NULL POINTER exception . How can I make sure that Data is not read from the cache until and unless data has been stored into the Cache? 回答1: What you are requesting will make cache usage very problematic. If you always block on a missing entry, any eviction or expiry will put you in the same situation as having an empty cache / missing mapping. However,

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

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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"); //--

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

阅读更多关于 Can same Ehcache object of same CacheManager be used by multiple threads?

问题 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(