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Subject: RE: Order of WebApp Loading
Date: Fri, 16 Sep 2005 09:25:07 +0100
Message-ID: <5684A7E6FB10504393A2806C1F4C0210076CE4B2@orion.qas.com>
Thread-Topic: Order of WebApp Loading
Thread-Index: AcW6Hi78mzbRTOe1RsW2MEjk+h24zQAAZiYAAB4EqVA=
From: "Allistair Crossley" <Allistair.Crossley@QAS.com>
To: "Tomcat Users List" <tomcat-user@jakarta.apache.org>

Hi,

Create a servlet that is shared by all your web applications, perhaps use c=
ommon/classes (or shared/classes - not sure which), and configure it to be =
a load-on-startup servlet in each web app's web.xml. your servlet can hook =
into your db startup code, or not bother if already started.

Allistair

> -----Original Message-----
> From: Robert Harper [mailto:robert@iat-cti.com]
> Sent: 15 September 2005 19:08
> To: 'Tomcat Users List'
> Subject: RE: Order of WebApp Loading
>=20
>=20
> The case is still that most servlet containers, Tomcat included, are
> multithreaded and order of processing should not be counted=20
> on. One app may
> be swapped out while the other app runs. It is far better to=20
> write your
> servlets so that there is no dependency on order of=20
> operation, order of
> parameters, etc. Another reason not to count on this is that=20
> it is not part
> of the specification and one implementation or version of a=20
> container may
> choose to provide order or not and this might change. There=20
> have been many
> recommendations on how to do this and I would suggest you try=20
> them. Your
> apps will probably end up being more scaleable as well.
>=20
> Robert S. Harper
> Information Access Technology, Inc.
>=20
> -----Original Message-----
> From: Jilles van Gurp [mailto:incoming@jillesvangurp.com]=20
> Sent: Thursday, September 15, 2005 11:52 AM
> To: Tomcat Users List
> Subject: Re: Order of WebApp Loading
>=20
> If you define the contexts in the server.xml, they are started in the=20
> order that you define them, I think.
>=20
> Regards,
>=20
> Jilles
>=20
> Peter Menzel wrote:
> > Hi there,
> >
> > I have a question concerning Tomcats webapp loading:
> > What is the order in which tomcats loads its webapps ?
> > I have two webapps configured by=20
> /conf/Catalina/localhost/XXX.xml and=20
> > I need one webapp to be loaded before the other, because it=20
> starts the=20
> > database.
> > How does Tomcat choose the first, second, ...
> > And what is the loading sequence, if both are deployed as a .war ?
> >
> > Kind regards, Peter Menzel
> >
> >
> >=20
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> >
> >
> >
>=20
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>=20
>=20
>=20
>=20
>=20
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>=20
>=20


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