Ehcache is a widely used open source Java distributed cache for general purpose caching, Java EE and light-weight containers.
Ehcache was originally developed by Greg Luck, starting in 2003.In 2009, the project was purchased by Terracotta, who provides paid support.
For integrating Ehcache in scala steps are :
1) First we need to Download BigMemory GO from http://terracotta.org/downloads/bigmemorygo.
2) Once it is downloaded we will get terracotta-license.key on our email which needs to be put in resource folder.
3) Put ehcache.xml in resource folder.
4) Add related jars in classpath .
Or add following library dependencies in build.sbt
Above steps will give you the access of configuring ehcache in scala.
Ehcache configuration : We can configure ehcache in two ways.
1) Declarative : We have to configure our cache region in ehcache.xml
Here maxEntriesLocalHeap are the total number of entries which a cache region can have.
Its default value is 0 which means our cache region can have any number of entries.
eternal and (timeToIdleSeconds , timeToLiveSeconds ) are vice versa means if eternal = true then there is no meaning of timeToIdleSeconds and timeToLiveSeconds . Elements in cache region will not expire.
localTempSwap is a persistence strategy which write the data in disk but when you restart the system , this cache related data will automatically removes from the disk.