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Prevayler is an open-source (BSD) system-prevalence layer for Java: it transparently persists plain old Java objects. It is an in-RAM database backed by snapshots of the system via object serialization, which are loaded after a system crash to restore state. Changes to data happen via transaction operations on objects made from serializable classes. Prevayler's development was started by Klaus Wuestefeld.[1]
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.
Prevayler requires enough RAM to keep the entire system state.
References edit
- ^ Sam-Bodden & Judd 2008, p. 330.
Works cited edit
- Sam-Bodden, Brian; Judd, Christopher M (2008). Enterprise Java Development on a Budget: Leveraging Java Open Source Technologies. Apress. ISBN 978-1-4302-0682-8.
See also edit
External links edit
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