Synopse Open Source

2012-12-20

How to make it fast?

By AB4327-GANDI, 2012-12-20. Pascal Programming

On our forum, a clever question was posted about publishing some enhanced RTL functions for newer versions of Delphi - as we did for Delphi 7 and 2007.

I was looking for a faster IntToStr implementation and discovered SynCommons.pas.
(....)
That's really too bad, SynCommons.pas really does contain some seriously fast stuff, people would greatly benefit from it if it was made general-purpose.

In fact, it would not be enough to change the RTL function implementations.
IMHO, to write something scalable, you need to get rid of such functions.

2012-11-30

Transmission between mORMots

By AB4327-GANDI, 2012-11-30. Open Source › mORMot Framework

Little mORMots have a very efficient transmission protocol, in their mountains...

Most mORMots are highly social and use loud whistles to communicate with one another, especially when alarmed.
As stated by Wikipedia

In a comment of the already quoted blog article about DataSnap performance issues, Tom asked this interesting question about mORMot, after I presented how we like to use http.sys kernel-mode server to achieve best performance possible over HTTP:

What about TCP communication, http is not the only Internet protocol. Protobuf, Thrift, MsgPack, BSON etc, is binary protocol and http i big overhead in some systems.
Did http.sys enable use of tcp/ip socket protocol?

2012-11-28

Synopse PDF Engine 1.18

By AB4327-GANDI, 2012-11-28. Open Source › Synopse PDF engine

Our SynPdf library was released as part of every mORMot version. But the stand-alone .zip was still in 1.15 revision. I have updated it, and now it reflects the latest version from our source code repository (i.e. 1.18). Open Source, working from Delphi 5 up to XE3. Thanks to nice proposals - like […]

Breaking change in mORmot: SQLite3.pas units renamed mORMot.pas

By AB4327-GANDI, 2012-11-28. Open Source › mORMot Framework

All former SQLite3\SQLite3*.pas units have been renamed to SQLite3\mORMot*.pas to match the database-agnostic scheme of the mORMot framework. This is a major break change, so all your "uses" clauses in your code is to be change to follow the new naming. See this commit, which includes […]

2012-11-23

Speed comparison between WCF, Java, DataSnap and mORMot

By AB4327-GANDI, 2012-11-23. Open Source › mORMot Framework

Roberto Scheinders wrote a nice blog post about performance and stability of DataSnap XE3, compared with mORMot and some other available frameworks.

Compared frameworks were:

DataSnap (Delphi)
mORMot (Delphi)
ASP.NET WCF
Jersey/Grizzly (Java)
Node.JS (JavaScript)

In short, DataSnap was slow and not stable (concurrent test was crashing the application), whereas mORMot was very stable, very fast (faster than any other in concurrent mode), and used much less memory.

2012-11-20

Authentication in mORMot using Windows credentials

By AB4327-GANDI, 2012-11-20. Open Source › mORMot Framework

By default, the hash of the user password is stored safely on the server side. This may be an issue for corporate applications, since a new user name / password pair is to be defined by each client, which may be annoying.

Since revision 1.18 of the framework, mORMot is able to use Windows Authentication to identify any user. That is, the user does not need to enter any name nor password, but her/his Windows credentials, as entered at Windows session startup, will be used.

Thanks a lot Chaa for making public your code proposal!
Open Source is so great sometimes!
Keep the good work!

2012-11-13

Go language and Delphi

By AB4327-GANDI, 2012-11-13. Pascal Programming

Do you know the Go language?

It is a strong-typed, compiled, cross-platform, and concurrent.
It features some nice high-level structures, like maps and strings, and still have very low-level access to the generated code: pointers are there, in a safe strong-typed implementation just like in pascal, and there is even a "goto", which sounds like an heresy to dogmatic coders, but does make sense to me, at least when you want to optimize code speed, in some rare cases.

It is created/pushed by Google, used internally by the company in their computer farms, and was designed by one of the original C creators.

2012-10-28

SynDBOracle: Open Source native Oracle access

By AB4327-GANDI, 2012-10-28. Open Source › mORMot Framework

(this is an update of the article published in 2011/07)

For our mORMot framework, and in completion to our SynOleDB unit, we added a new Open Source unit, named SynDBOracle. It allows direct access to any remote Oracle server, using the Oracle Call Interface.

Oracle Call Interface (OCI) is the most comprehensive, high performance, native unmanaged interface to the Oracle Database that exposes the full power of the Oracle Database. We wrote a direct call of the oci.dll library, using our DB abstraction classes introduced for SynOleDB.

We tried to implement all best-practice patterns detailed in the official Building High Performance Drivers for Oracle document

Resulting speed is quite impressive: for all requests, SynDBOracle is 3 to 5 times faster than a SynOleDB connection using the native OleDB Provider supplied by Oracle. We noted also that our implementation is 10 times faster than the one provided with ZEOS/ZDBC, which is far from optimized.

You can use the latest version of the Oracle Instant Client provided by Oracle - see this link - which allows you to run your applications without installing the standard (huge) Oracle client or having an ORACLE_HOME. Just deliver the dll files in the same directory than your application, and it will work.