Prevayler
Encyclopedia
Prevayler is an open source
(BSD) system prevalence layer for Java
: it transparently persists Plain Old Java Object
s. Read operations are three to four orders of magnitude faster with Prevayler when compared to traditional database systems since all objects are always in RAM
and in-process.
The fact that it loads all persisted objects in memory comes with a disadvantage. It can not store more than the limit imposed by RAM
.
Open source
The term open source describes practices in production and development that promote access to the end product's source materials. Some consider open source a philosophy, others consider it a pragmatic methodology...
(BSD) system prevalence layer for Java
Java (programming language)
Java is a programming language originally developed by James Gosling at Sun Microsystems and released in 1995 as a core component of Sun Microsystems' Java platform. The language derives much of its syntax from C and C++ but has a simpler object model and fewer low-level facilities...
: it transparently persists Plain Old Java Object
Plain Old Java Object
In computing software, POJO is an acronym for Plain Old Java Object. The name is used to emphasize that a given object is an ordinary Java Object, not a special object...
s. Read operations are three to four orders of magnitude faster with Prevayler when compared to traditional database systems since all objects are always in RAM
Ram
-Animals:*Ram, an uncastrated male sheep*Ram cichlid, a species of freshwater fish endemic to Colombia and Venezuela-Military:*Battering ram*Ramming, a military tactic in which one vehicle runs into another...
and in-process.
The fact that it loads all persisted objects in memory comes with a disadvantage. It can not store more than the limit imposed by RAM
Ram
-Animals:*Ram, an uncastrated male sheep*Ram cichlid, a species of freshwater fish endemic to Colombia and Venezuela-Military:*Battering ram*Ramming, a military tactic in which one vehicle runs into another...
.