is the most reliable FreeSoftware
Prevalence layer we are capable of providing for Java.
Prevalence is by far
the fastest, simplest and most transparent business object persistence, ACID
transaction, fault-tolerance, replication and load-balancing architecture we know.
Queries with Prevayler
are more than 9000 times faster
than querying Oracle
Queries with Prevayler
are more than 3000 times faster
than querying MySQL
(Even with the Oracle
databases fully cached in RAM
and on the same physical machine
as the test VM. @:o See ScalabilityTestResults
we are finally free to create true object servers and use objects the way they were intended all along.
We are able to use any algorithm, data-structure and query language we please. We are no longer constrained to the ones provided by database and application servers which must run on disk data-blocks.
We believe the whole OO community is finally free to recover from the atrophy caused by database and application server restraints. We no longer have to distort and maim our object models to satisfy their limitations.
We no longer have DBAs imposing us database layout restrictions. We have freed them to do something more useful.
We have set fire to the table-models on our walls. We have deleted our database creation scripts. We no longer have to keep them updated.
We no longer have to license, install, configure and maintain a database and application server every single time we want to develop, demonstrate or deploy our systems for any of our clients. Give us a Java VM and we are good to go. @:)
requires us to have enough RAM on our servers to contain all our business objects. We have found that to be the case already in many of the systems we are deploying. With the steady evolution in RAM technology, we believe that this will also be true for the vast majority of systems in the near future. (See BreakthroughsInMemoryTechnology
The simple concepts behind prevalence have been around for ages. To use Prevayler
, though, we have faced fear and resistence from our peers, bosses and clients.
We use Prevayler
not because it is the easiest alternative to justify, but because we believe it is the best. @8)
To learn more about Prevayler
and Object Prevalence
, take a look at GettingStarted
If you can provide a more reliable implementation of a prevalence layer or, if you can describe a more transparent, faster or simpler architecture than prevalence, please let us know: BetterAlternativesToPrevayler
To sign the Prevalent Manifesto above, just append your name and we'll add it to the list: